Develop Reference

Could not determine type for: java.util.Map, at table: Film

I made an application/website were you can rate movies and see the ranking of the movies based on the ratings given by the users.
I first made the application without a connection with the database and had a class with some mock data for testing the application. Now I want to start connecting with my MySQL database and I got the following error. I am making this app for a school project so I only have examples where we connect an easy class with only Strings or Integers with the database but I don't know what to do to solve this error.
The map contains names of users and the rating they gave to the movie.
Film class
package domain;
import java.io.Serializable;
import java.util.Map;
import java.util.Objects;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
#Entity
public class Film implements Serializable{
private static final long serialVersionUID = 1L;
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
private String naam;
private String[] regisseurs;
private Map<String, Integer> ratings;
private int totaleRating;
private String code;
public Film(String naam, String[] regisseurs, Map<String, Integer> ratings, String code) {
this.naam = naam;
this.regisseurs = regisseurs;
this.ratings = ratings;
this.totaleRating = 0;
this.code = code;
}
protected Film() {
}
#Override
public int hashCode() {
return Objects.hash(naam);
}
#Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
Film other = (Film) obj;
return Objects.equals(naam, other.naam);
}
public String getNaam() {
return naam;
}
public void setName(String naam) {
this.naam = naam;
}
public Map<String, Integer> getRatings() {
return ratings;
}
public String[] getRegisseurs() {
return regisseurs;
}
public void addRatings(String user, int rating) {
this.ratings.put(user, rating);
}
public Integer returnTotaleRating() {
int sum = 0;
if (ratings != null) {
if (!ratings.isEmpty()) {
sum = ratings.values().stream().mapToInt(Integer::intValue).sum();
}
}
return sum;
}
public void setRegisseurs(String[] regisseurs) {
this.regisseurs = regisseurs;
}
public int getTotaleRating() {
return returnTotaleRating();
}
public String getCode() {
return code;
}
public void setCode(String code) {
this.code = code;
}
}
FilmDao
package service;
import java.util.List;
import domain.Film;
public interface FilmDao {
public List<Film> findAll();
}
JpaFilmDao
package service;
import java.util.List;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.TypedQuery;
import org.springframework.stereotype.Repository;
import org.springframework.transaction.annotation.Transactional;
import domain.Film;
#Repository("filmDao")
public class JpaFilmDao implements FilmDao{
#PersistenceContext
private EntityManager em;
#Override
#Transactional(readOnly=true)
public List<Film> findAll() {
TypedQuery<Film> query = em.createQuery(
"SELECT f FROM Film f ORDER BY f.id", Film.class);
return query.getResultList();
}
}
PersistenceJPAConfig
package com.springBoot.Filmfestival_JPA;
import java.util.Properties;
import javax.persistence.EntityManagerFactory;
import javax.sql.DataSource;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor;
import org.springframework.jdbc.datasource.DriverManagerDataSource;
import org.springframework.orm.jpa.JpaTransactionManager;
import org.springframework.orm.jpa.JpaVendorAdapter;
import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
import org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter;
import org.springframework.transaction.PlatformTransactionManager;
import org.springframework.transaction.annotation.EnableTransactionManagement;
#Configuration
#EnableTransactionManagement
public class PersistenceJPAConfig {
#Bean
public LocalContainerEntityManagerFactoryBean entityManagerFactory() {
LocalContainerEntityManagerFactoryBean em = new LocalContainerEntityManagerFactoryBean();
em.setDataSource(dataSource());
em.setPackagesToScan(new String[] { "domain" });//hier moet hij kijken
JpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
em.setJpaVendorAdapter(vendorAdapter);
em.setJpaProperties(additionalProperties());
return em;
}
#Bean
public DataSource dataSource(){
DriverManagerDataSource dataSource = new DriverManagerDataSource();
dataSource.setDriverClassName("com.mysql.cj.jdbc.Driver");
dataSource.setUrl("jdbc:mysql://localhost:3306/filmfestival?useUnicode=true&useJDBCCompliantTimezoneShift=true&useLegacyDatetimeCode=false&serverTimezone=UTC");
dataSource.setUsername( "root" );
dataSource.setPassword( "root" );
return dataSource;
}
#Bean
public PlatformTransactionManager transactionManager(EntityManagerFactory emf){
JpaTransactionManager transactionManager = new JpaTransactionManager();
transactionManager.setEntityManagerFactory(emf);
return transactionManager;
}
#Bean
public PersistenceExceptionTranslationPostProcessor exceptionTranslation(){
return new PersistenceExceptionTranslationPostProcessor();
}
Properties additionalProperties() {
Properties properties = new Properties();
properties.setProperty("hibernate.hbm2ddl.auto", "create");
//properties.setProperty("hibernate.hbm2ddl.auto", "validate");
return properties;
}
}
Error:
2022-08-16 09:17:46.463 INFO 13368 --- [ main] s.F.SpringBootFilmfestivalJpaApplication : Starting SpringBootFilmfestivalJpaApplication using Java 17.0.1 on LAPTOP-REPTMNPV with PID 13368 (C:\Users\Gebruiker\Documents\workspace3-spring\Spring_Boot_Filmfestival-JPA\target\classes started by Gebruiker in C:\Users\Gebruiker\Documents\workspace3-spring\Spring_Boot_Filmfestival-JPA)
2022-08-16 09:17:46.465 INFO 13368 --- [ main] s.F.SpringBootFilmfestivalJpaApplication : No active profile set, falling back to 1 default profile: "default"
2022-08-16 09:17:46.864 INFO 13368 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data JPA repositories in DEFAULT mode.
2022-08-16 09:17:46.875 INFO 13368 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 4 ms. Found 0 JPA repository interfaces.
2022-08-16 09:17:47.008 INFO 13368 --- [ main] trationDelegate$BeanPostProcessorChecker : Bean 'persistenceJPAConfig' of type [com.springBoot.Filmfestival_JPA.PersistenceJPAConfig$$EnhancerBySpringCGLIB$$624e4fe] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2022-08-16 09:17:47.044 INFO 13368 --- [ main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.ws.config.annotation.DelegatingWsConfiguration' of type [org.springframework.ws.config.annotation.DelegatingWsConfiguration$$EnhancerBySpringCGLIB$$736b0246] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2022-08-16 09:17:47.079 INFO 13368 --- [ main] .w.s.a.s.AnnotationActionEndpointMapping : Supporting [WS-Addressing August 2004, WS-Addressing 1.0]
2022-08-16 09:17:47.294 INFO 13368 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http)
2022-08-16 09:17:47.300 INFO 13368 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2022-08-16 09:17:47.300 INFO 13368 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.65]
2022-08-16 09:17:47.500 INFO 13368 --- [ main] org.apache.jasper.servlet.TldScanner : At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
2022-08-16 09:17:47.510 INFO 13368 --- [ main] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2022-08-16 09:17:47.510 INFO 13368 --- [ main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 1018 ms
2022-08-16 09:17:47.575 INFO 13368 --- [ main] o.hibernate.jpa.internal.util.LogHelper : HHH000204: Processing PersistenceUnitInfo [name: default]
2022-08-16 09:17:47.599 INFO 13368 --- [ main] org.hibernate.Version : HHH000412: Hibernate ORM core version 5.6.9.Final
2022-08-16 09:17:47.694 INFO 13368 --- [ main] o.hibernate.annotations.common.Version : HCANN000001: Hibernate Commons Annotations {5.1.2.Final}
2022-08-16 09:17:47.982 INFO 13368 --- [ main] org.hibernate.dialect.Dialect : HHH000400: Using dialect: org.hibernate.dialect.MySQL8Dialect
2022-08-16 09:17:48.133 ERROR 13368 --- [ main] j.LocalContainerEntityManagerFactoryBean : Failed to initialize JPA EntityManagerFactory: [PersistenceUnit: default] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.MappingException: Could not determine type for: java.util.Map, at table: Film, for columns: [org.hibernate.mapping.Column(ratings)]
2022-08-16 09:17:48.134 WARN 13368 --- [ main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [com/springBoot/Filmfestival_JPA/PersistenceJPAConfig.class]: Invocation of init method failed; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.MappingException: Could not determine type for: java.util.Map, at table: Film, for columns: [org.hibernate.mapping.Column(ratings)]
2022-08-16 09:17:48.135 INFO 13368 --- [ main] o.apache.catalina.core.StandardService : Stopping service [Tomcat]
2022-08-16 09:17:48.142 INFO 13368 --- [ main] ConditionEvaluationReportLoggingListener :
Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2022-08-16 09:17:48.154 ERROR 13368 --- [ main] o.s.boot.SpringApplication : Application run failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [com/springBoot/Filmfestival_JPA/PersistenceJPAConfig.class]: Invocation of init method failed; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.MappingException: Could not determine type for: java.util.Map, at table: Film, for columns: [org.hibernate.mapping.Column(ratings)]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1804) ~[spring-beans-5.3.22.jar:5.3.22]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:620) ~[spring-beans-5.3.22.jar:5.3.22]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) ~[spring-beans-5.3.22.jar:5.3.22]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.22.jar:5.3.22]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.22.jar:5.3.22]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.22.jar:5.3.22]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.22.jar:5.3.22]
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1154) ~[spring-context-5.3.22.jar:5.3.22]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:908) ~[spring-context-5.3.22.jar:5.3.22]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:583) ~[spring-context-5.3.22.jar:5.3.22]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:147) ~[spring-boot-2.7.2.jar:2.7.2]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:734) ~[spring-boot-2.7.2.jar:2.7.2]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:408) ~[spring-boot-2.7.2.jar:2.7.2]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:308) ~[spring-boot-2.7.2.jar:2.7.2]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1306) ~[spring-boot-2.7.2.jar:2.7.2]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1295) ~[spring-boot-2.7.2.jar:2.7.2]
at com.springBoot.Filmfestival_JPA.SpringBootFilmfestivalJpaApplication.main(SpringBootFilmfestivalJpaApplication.java:20) ~[classes/:na]
Caused by: javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.MappingException: Could not determine type for: java.util.Map, at table: Film, for columns: [org.hibernate.mapping.Column(ratings)]
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:421) ~[spring-orm-5.3.22.jar:5.3.22]
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:396) ~[spring-orm-5.3.22.jar:5.3.22]
at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:341) ~[spring-orm-5.3.22.jar:5.3.22]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1863) ~[spring-beans-5.3.22.jar:5.3.22]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1800) ~[spring-beans-5.3.22.jar:5.3.22]
... 16 common frames omitted
Caused by: org.hibernate.MappingException: Could not determine type for: java.util.Map, at table: Film, for columns: [org.hibernate.mapping.Column(ratings)]
at org.hibernate.mapping.SimpleValue.getType(SimpleValue.java:515) ~[hibernate-core-5.6.9.Final.jar:5.6.9.Final]
at org.hibernate.mapping.SimpleValue.isValid(SimpleValue.java:482) ~[hibernate-core-5.6.9.Final.jar:5.6.9.Final]
at org.hibernate.mapping.Property.isValid(Property.java:231) ~[hibernate-core-5.6.9.Final.jar:5.6.9.Final]
at org.hibernate.mapping.PersistentClass.validate(PersistentClass.java:627) ~[hibernate-core-5.6.9.Final.jar:5.6.9.Final]
at org.hibernate.mapping.RootClass.validate(RootClass.java:267) ~[hibernate-core-5.6.9.Final.jar:5.6.9.Final]
at org.hibernate.boot.internal.MetadataImpl.validate(MetadataImpl.java:359) ~[hibernate-core-5.6.9.Final.jar:5.6.9.Final]
at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:314) ~[hibernate-core-5.6.9.Final.jar:5.6.9.Final]
at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:471) ~[hibernate-core-5.6.9.Final.jar:5.6.9.Final]
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1498) ~[hibernate-core-5.6.9.Final.jar:5.6.9.Final]
at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:58) ~[spring-orm-5.3.22.jar:5.3.22]
at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:365) ~[spring-orm-5.3.22.jar:5.3.22]
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:409) ~[spring-orm-5.3.22.jar:5.3.22]
... 20 common frames omitted

Failed to initialize JPA EntityManagerFactory: Use of #OneToMany or #ManyToMany targeting an unmapped class

i would like to join 3 tables by using #ManyToMany , I have 2 entities "user" and "roles" ,
like this
but it's gives me as an error :
Failed to initialize JPA EntityManagerFactory: Use of #OneToMany or #ManyToMany targeting an unmapped class: com.example.demo.User.roles[com.example.demo.Role]
THe "user" entity :
package com.example.demo;
import java.util.HashSet;
import java.util.Set;
import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinTable;
import javax.persistence.ManyToMany;
import javax.persistence.Table;
import javax.persistence.JoinColumn;
#Entity
#Table(name="users")
public class User {
#Id
#Column(name = "role_id")
//pour l'auto-incrémentation de la clé primaire
////Strategy = GenerationType. IDENTITY : La génération de la clé primaire se fera à partir d’une Identité propre au SGBD.
#GeneratedValue(strategy = GenerationType.IDENTITY)
private Integer id ;
private String full_name;
private String password ;
private boolean enabled ;
private boolean email ;
#ManyToMany(cascade = CascadeType.ALL, fetch = FetchType.EAGER)
//pour connecter les tables
#JoinTable(
name = "users_roles",
joinColumns = #JoinColumn(name = "user_id"),
inverseJoinColumns = #JoinColumn(name = "role_id")
)
private Set<Role> roles = new HashSet<>();
public String getUsername() {
return full_name ;
}
public Set<Role> getRoles() {
return roles;
}
public void setRoles(Set<Role> roles) {
this.roles = roles;
}
public boolean isEmail() {
return email;
}
public void setEmail(boolean email) {
this.email = email;
}
public boolean isEnabled() {
return enabled;
}
public void setEnabled(boolean enabled) {
this.enabled = enabled;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public void setUsername(String full_name) {
this.full_name = full_name;
}
}
the "roles" entity :
package com.example.demo;
import javax.persistence.*;
#Entity
#Table(name = "roles")
public class Role {
#Id
#Column(name = "role_id")
#GeneratedValue(strategy = GenerationType.IDENTITY)
private Integer id;
private String name;
public String getName() {
return name;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public void setName(String name) {
this.name = name;
}
}
My pom.xml :
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.4.4</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>demo</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>16</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
the stack traces :
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v2.4.4)
2021-03-24 16:37:55.741 INFO 3784 --- [ restartedMain] com.example.demo.DemoApplication : Starting DemoApplication using Java 15.0.2 on DESKTOP-3TAPOK7 with
PID 3784 (E:\Stage\demo\target\classes started by Dell in E:\Stage\demo)
2021-03-24 16:37:55.743 INFO 3784 --- [ restartedMain] com.example.demo.DemoApplication : No active profile set, falling back to default profiles: default
2021-03-24 16:37:55.798 INFO 3784 --- [ restartedMain] .e.DevToolsPropertyDefaultsPostProcessor : Devtools property defaults active! Set 'spring.devtools.add-properties' to 'false' to disable
2021-03-24 16:37:55.799 INFO 3784 --- [ restartedMain] .e.DevToolsPropertyDefaultsPostProcessor : For additional web related logging consider setting the 'logging.level.web' property to 'DEBUG'
2021-03-24 16:37:56.411 INFO 3784 --- [ restartedMain] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data JPA repositories in DEFAULT mode.
2021-03-24 16:37:56.464 INFO 3784 --- [ restartedMain] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 41 ms. Found 1 JPA repository interfaces.
2021-03-24 16:37:57.087 INFO 3784 --- [ restartedMain] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http)
2021-03-24 16:37:57.105 INFO 3784 --- [ restartedMain] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2021-03-24 16:37:57.105 INFO 3784 --- [ restartedMain] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.44]
2021-03-24 16:37:57.224 INFO 3784 --- [ restartedMain] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2021-03-24 16:37:57.224 INFO 3784 --- [ restartedMain] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 1425 ms
2021-03-24 16:37:57.404 INFO 3784 --- [ restartedMain] o.hibernate.jpa.internal.util.LogHelper : HHH000204: Processing PersistenceUnitInfo [name: default]
2021-03-24 16:37:57.461 INFO 3784 --- [ restartedMain] org.hibernate.Version : HHH000412: Hibernate ORM core version 5.4.29.Final
2021-03-24 16:37:57.569 INFO 3784 --- [ restartedMain] o.hibernate.annotations.common.Version : HCANN000001: Hibernate Commons Annotations {5.1.2.Final}
2021-03-24 16:37:57.642 INFO 3784 --- [ restartedMain] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Starting...
2021-03-24 16:37:57.725 INFO 3784 --- [ restartedMain] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Start completed.
2021-03-24 16:37:57.781 INFO 3784 --- [ restartedMain] org.hibernate.dialect.Dialect : HHH000400: Using dialect: org.hibernate.dialect.PostgreSQL92Dialect2021-03-24 16:37:57.967 ERROR 3784 --- [ restartedMain] j.LocalContainerEntityManagerFactoryBean : Failed to initialize JPA EntityManagerFactory: Use of #OneToMany or #ManyToMany targeting an unmapped class: com.example.demo.User.roles[com.example.demo.Role]
2021-03-24 16:37:57.967 WARN 3784 --- [ restartedMain] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]: Invocation of init method failed; nested exception is org.hibernate.AnnotationException: Use of
#OneToMany or #ManyToMany targeting an unmapped class: com.example.demo.User.roles[com.example.demo.Role]
2021-03-24 16:37:57.976 INFO 3784 --- [ restartedMain] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown initiated...
2021-03-24 16:37:58.013 INFO 3784 --- [ restartedMain] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown completed.
2021-03-24 16:37:58.016 INFO 3784 --- [ restartedMain] o.apache.catalina.core.StandardService : Stopping service [Tomcat]
2021-03-24 16:37:58.028 INFO 3784 --- [ restartedMain] ConditionEvaluationReportLoggingListener :
Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2021-03-24 16:37:58.046 ERROR 3784 --- [ restartedMain] o.s.boot.SpringApplication : Application run failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]: Invocation of init method failed; nested exception is org.hibernate.AnnotationException: Use of #OneToMany or #ManyToMany targeting an unmapped class: com.example.demo.User.roles[com.example.demo.Role]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1786) ~[spring-beans-5.3.5.jar:5.3.5]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:602) ~[spring-beans-5.3.5.jar:5.3.5]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:524) ~[spring-beans-5.3.5.jar:5.3.5]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.5.jar:5.3.5]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.5.jar:5.3.5]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.5.jar:5.3.5]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.5.jar:5.3.5]
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1154) ~[spring-context-5.3.5.jar:5.3.5]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:908) ~[spring-context-5.3.5.jar:5.3.5]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:583) ~[spring-context-5.3.5.jar:5.3.5]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:144) ~[spring-boot-2.4.4.jar:2.4.4]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:769) ~[spring-boot-2.4.4.jar:2.4.4]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:761) ~[spring-boot-2.4.4.jar:2.4.4]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:426) ~[spring-boot-2.4.4.jar:2.4.4]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:326) ~[spring-boot-2.4.4.jar:2.4.4]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1313) ~[spring-boot-2.4.4.jar:2.4.4]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1302) ~[spring-boot-2.4.4.jar:2.4.4]
at com.example.demo.DemoApplication.main(DemoApplication.java:10) ~[classes/:na]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64) ~[na:na]
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
at java.base/java.lang.reflect.Method.invoke(Method.java:564) ~[na:na]
at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) ~[spring-boot-devtools-2.4.4.jar:2.4.4]
Caused by: org.hibernate.AnnotationException: Use of #OneToMany or #ManyToMany targeting an unmapped class: com.example.demo.User.roles[com.example.demo.Role]
at org.hibernate.cfg.annotations.CollectionBinder.bindManyToManySecondPass(CollectionBinder.java:1351) ~[hibernate-core-5.4.29.Final.jar:5.4.29.Final]
at org.hibernate.cfg.annotations.CollectionBinder.bindStarToManySecondPass(CollectionBinder.java:874) ~[hibernate-core-5.4.29.Final.jar:5.4.29.Final]
at org.hibernate.cfg.annotations.CollectionBinder$1.secondPass(CollectionBinder.java:799) ~[hibernate-core-5.4.29.Final.jar:5.4.29.Final]
at org.hibernate.cfg.CollectionSecondPass.doSecondPass(CollectionSecondPass.java:53) ~[hibernate-core-5.4.29.Final.jar:5.4.29.Final]
at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.processSecondPasses(InFlightMetadataCollectorImpl.java:1693) ~[hibernate-core-5.4.29.Final.jar:5.4.29.Final]
at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.processSecondPasses(InFlightMetadataCollectorImpl.java:1661) ~[hibernate-core-5.4.29.Final.jar:5.4.29.Final]
at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:295) ~[hibernate-core-5.4.29.Final.jar:5.4.29.Final]
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.metadata(EntityManagerFactoryBuilderImpl.java:1224) ~[hibernate-core-5.4.29.Final.jar:5.4.29.Final]
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1255) ~[hibernate-core-5.4.29.Final.jar:5.4.29.Final]
at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:58)
~[spring-orm-5.3.5.jar:5.3.5]
at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:365) ~[spring-orm-5.3.5.jar:5.3.5]
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:409) ~[spring-orm-5.3.5.jar:5.3.5]
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:396) ~[spring-orm-5.3.5.jar:5.3.5]
at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:341) ~[spring-orm-5.3.5.jar:5.3.5]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1845) ~[spring-beans-5.3.5.jar:5.3.5]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1782) ~[spring-beans-5.3.5.jar:5.3.5]
... 22 common frames omitted
mvn spring-boot:r
Thanks in advance.

Thymeleaf won't recognize variable in HomeController and Java error in creating bean "homeController"

I've been debugging this web app for 2 hours now and I can't figure this out.
After placing the version variable in the application, removing the temp H2 DB and the data.sql file, then adding the driver to the pom.xml file to use the Postgres DB, it stopped working.
I attached all the necessary files but if you need something please comment.
In the application.properties I gave the variable version then used that in the HomeController (line 24) and the corresponding console error says, "could not resolve placeholder 'version'."
In the browser usually, there are error messages that I can dig through, but this time the browser on the localhost simply fails to load, This site can’t be reached, localhost refused to connect.
There are only two "Caused by" errors in the console logs below so I'm sure it is not that difficult to point out the bug.
After lots of research on StackOverflow, looking at other questions, and trial and error, I have run out of possible solutions to try that are applicable to my case. Would really appreciate it if someone would take a look at the attached code and let me know about any solutions. Any help is appreciated! Thank you very much in advance and I will check back.
Here's the file structure if that helps at all
Here's the 2nd part:
The spring.datasource.username=postgres is underlined in yellow in eclipse as well as the version=3.0.0 at the bottom, when I hover over the yellow line it says, "unknown property" on both.
Here is my application.properties file and the screenshot:
spring.datasource.url=jdbc:postgresql://localhost:5432/pma-database
spring.datasource.username=postgres
spring.datasource.password=password321
spring.datasource.initialization-mode=never
spring.jpa.hibernate.ddl-auto=none
spring.jpa.properties.hibernate.jdbc.lob.non_contextual_creation=true
spring.jpa.show-sql=true
spring.thymeleaf.cache=false
version=3.0.0
Here's the HomeController.java you'll see the #Value("${version}") is here on line 24 or so and the model.addAttribute("versionNumber", ver) is on line 36.
package com.project1.controllers;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.project1.dao.EmployeeRepository;
import com.project1.dao.ProjectRepository;
import com.project1.dto.ChartData;
import com.project1.dto.EmployeeProject;
import com.project1.entities.Project;
#Controller
public class HomeController {
#Value("${version}")
private String ver;
#Autowired
ProjectRepository proRepo;
#Autowired
EmployeeRepository empRepo;
#GetMapping("/")
public String displayHome(Model model) throws JsonProcessingException {
model.addAttribute("versionNumber", ver);
Map<String, Object> map = new HashMap<>();
//we are querying the DB for projects
List<Project> projects = proRepo.findAll();
model.addAttribute("projectsList", projects);
List<ChartData> projectData = proRepo.getProjectStatus();
ObjectMapper objectMapper = new ObjectMapper();
String jsonString = objectMapper.writeValueAsString(projectData);
//[ ["NOTSTARTED, 1], ["INPROGRESS", 2], ["COMPLETED", 1] ]
model.addAttribute("projectStatusCnt", jsonString);
//we are querying the DB for employees
List<EmployeeProject> employeesProjectCnt = empRepo.employeeProjects();
model.addAttribute("employeesListProjectsCnt", employeesProjectCnt);
return "main/home";
}
}
Here's the home.html file which has the versionNumber variable in the tag, which is related to the issue at hand.
<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<!-- this is the code for the header-->
<head th:replace="layouts::header"></head>
<!-- this is the code for the navbar-->
<nav th:replace="layouts::navbar"></nav>
<body>
<div class="container">
<h3>Main Dashboard</h3>
<a th:text="${versionNumber}"></a>
<hr>
<h4> Current Projects </h4>
<div class="row">
<div class="col-md-6">
<table class="table table-bordered table-striped">
<thead class="thead-dark">
<tr>
<th> Project Name </th>
<th> Project Stage </th>
</tr>
</thead>
<tbody>
<tr th:each="aProject : ${projectsList}">
<td th:text="${aProject.name}"></td>
<td th:text="${aProject.stage}"></td>
</tr>
</tbody>
</table>
</div>
<div class="col-md-4">
<canvas id="myPieChart" height="50" width="50"></canvas>
<script>
var chartData = "[[${projectStatusCnt}]]"
</script>
</div>
</div>
</div>
<div class="container">
<h4> Current Employees </h4>
<div class="row">
<div class="col-md-6">
<table class="table table-bordered table-striped">
<thead class="thead-dark">
<tr>
<th> First Name </th>
<th> Last Name </th>
<th> Project Count</th>
</tr>
</thead>
<tbody>
<tr th:each="aEmployeeProjectCnt : ${employeesListProjectsCnt}">
<td th:text="${aEmployeeProjectCnt.firstName}"></td>
<td th:text="${aEmployeeProjectCnt.lastName}"></td>
<td th:text="${aEmployeeProjectCnt.projectCount}"></td>
</tr>
</tbody>
</table>
</div>
</div>
</div>
<script type="text/javascript" th:src="#{js/myChart.js}"></script>
</body>
</html>
Here's the Employee class which has the GenerationStrategy. I tried
both GenerationTypes listed but they give the same exact error in the console logs.
#Id annotation
#GeneratedValue(strategy=GenerationType.SEQUENCE, generator="employee_seq")
Again the code snippet below was also tried but that gave me the same exact error as the code that I have attached below and these were recommendations from stackoverflow, but the application still won't work.
#Id
#GeneratedValue(strategy=GenerationType.SEQUENCE, generator="employee_seq")
#SequenceGenerator(allocationSize=1, name = "employee_generator")
Here's the Employee class
package com.project1.entities;
import java.util.List;
import javax.persistence.CascadeType;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.JoinTable;
import javax.persistence.ManyToMany;
import javax.persistence.SequenceGenerator;
#Entity
public class Employee {
#Id
#GeneratedValue(strategy=GenerationType.SEQUENCE, generator="employee_seq")
#SequenceGenerator(allocationSize=1, name = "employee_generator")
private long employeeId;
private String firstName;
private String lastName;
private String email;
#ManyToMany(cascade = {CascadeType.DETACH, CascadeType.MERGE, CascadeType.REFRESH, CascadeType.PERSIST},
fetch = FetchType.LAZY)
#JoinTable(name="project_employee",
joinColumns=#JoinColumn(name="employee_id"),
inverseJoinColumns=#JoinColumn(name="project_id")
)
private List<Project> projects;
public Employee() {
}
public Employee(String firstName, String lastName, String email) {
super();
this.firstName = firstName;
this.lastName = lastName;
this.email = email;
}
public List<Project> getProjects() {
return projects;
}
public void setProjects(List<Project> projects) {
this.projects = projects;
}
public long getEmployeeId() {
return employeeId;
}
public void setEmployeeId(long employeeId) {
this.employeeId = employeeId;
}
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
}
Also the same thing with the Project class
package com.project1.entities;
import java.util.ArrayList;
import java.util.List;
import javax.persistence.CascadeType;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.JoinTable;
import javax.persistence.ManyToMany;
import javax.persistence.SequenceGenerator;
#Entity
public class Project {
#Id
#GeneratedValue(strategy=GenerationType.SEQUENCE, generator="project_seq")
#SequenceGenerator(allocationSize=1, name = "project_generator")
private long projectId;
private String name;
private String stage; // NOTSTARTED, COMPLETED, INPROGRESS
private String description;
#ManyToMany(cascade = {CascadeType.DETACH, CascadeType.MERGE, CascadeType.REFRESH, CascadeType.PERSIST},
fetch = FetchType.LAZY)
#JoinTable(name="project_employee",
joinColumns=#JoinColumn(name="project_id"),
inverseJoinColumns=#JoinColumn(name="employee_id")
)
private List<Employee> employees;
public Project() {
}
public Project(String name, String stage, String description) {
super();
this.name = name;
this.stage = stage;
this.description = description;
}
public List<Employee> getEmployees() {
return employees;
}
public void setEmployees(List<Employee> employees) {
this.employees = employees;
}
public long getProjectId() {
return projectId;
}
public void setProjectId(long projectId) {
this.projectId = projectId;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getStage() {
return stage;
}
public void setStage(String stage) {
this.stage = stage;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
//convenience method
public void addEmployee(Employee emp) {
if(employees == null) {
employees = new ArrayList<>();
}
employees.add(emp);
}
}
Here's the error message:
Java HotSpot(TM) 64-Bit Server VM warning: Options -Xverify:none and -noverify were deprecated in JDK 13 and will likely be removed in a future release.
{spring.web.resources.chain.cache=false, spring.web.resources.cache.period=0}
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v2.4.0)
2020-12-06 19:57:50.893 INFO 8560 --- [ restartedMain] com.project1.PmaApplication : Starting PmaApplication using Java 14.0.2 on DESKTOP-C26F0I7 with PID 8560 (C:\Users\kashi\git\PMA-Application\PMA-Application\target\classes started by kashi in C:\Users\kashi\git\PMA-Application\PMA-Application)
2020-12-06 19:57:50.897 INFO 8560 --- [ restartedMain] com.project1.PmaApplication : No active profile set, falling back to default profiles: default
2020-12-06 19:57:50.975 INFO 8560 --- [ restartedMain] .e.DevToolsPropertyDefaultsPostProcessor : Devtools property defaults active! Set 'spring.devtools.add-properties' to 'false' to disable
2020-12-06 19:57:50.975 INFO 8560 --- [ restartedMain] .e.DevToolsPropertyDefaultsPostProcessor : For additional web related logging consider setting the 'logging.level.web' property to 'DEBUG'
2020-12-06 19:57:51.832 INFO 8560 --- [ restartedMain] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data JPA repositories in DEFERRED mode.
2020-12-06 19:57:51.902 INFO 8560 --- [ restartedMain] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 59 ms. Found 2 JPA repository interfaces.
2020-12-06 19:57:52.673 INFO 8560 --- [ restartedMain] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http)
2020-12-06 19:57:52.682 INFO 8560 --- [ restartedMain] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2020-12-06 19:57:52.683 INFO 8560 --- [ restartedMain] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.39]
2020-12-06 19:57:52.779 INFO 8560 --- [ restartedMain] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2020-12-06 19:57:52.779 INFO 8560 --- [ restartedMain] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 1803 ms
2020-12-06 19:57:52.843 INFO 8560 --- [ restartedMain] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Starting...
2020-12-06 19:57:52.977 INFO 8560 --- [ restartedMain] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Start completed.
2020-12-06 19:57:53.025 INFO 8560 --- [ restartedMain] o.s.b.a.h2.H2ConsoleAutoConfiguration : H2 console available at '/h2-console'. Database available at 'jdbc:h2:mem:c7335b0f-bd3a-43dd-9628-9ea69397c416'
2020-12-06 19:57:53.116 INFO 8560 --- [ restartedMain] o.s.b.d.a.OptionalLiveReloadServer : LiveReload server is running on port 35729
2020-12-06 19:57:53.268 INFO 8560 --- [ restartedMain] o.s.s.concurrent.ThreadPoolTaskExecutor : Initializing ExecutorService 'applicationTaskExecutor'
2020-12-06 19:57:53.381 INFO 8560 --- [ task-1] o.hibernate.jpa.internal.util.LogHelper : HHH000204: Processing PersistenceUnitInfo [name: default]
2020-12-06 19:57:53.397 WARN 8560 --- [ restartedMain] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'homeController': Injection of autowired dependencies failed; nested exception is java.lang.IllegalArgumentException: Could not resolve placeholder 'version' in value "${version}"
2020-12-06 19:57:53.397 INFO 8560 --- [ restartedMain] j.LocalContainerEntityManagerFactoryBean : Closing JPA EntityManagerFactory for persistence unit 'default'
2020-12-06 19:57:53.460 INFO 8560 --- [ task-1] org.hibernate.Version : HHH000412: Hibernate ORM core version 5.4.23.Final
2020-12-06 19:57:53.619 INFO 8560 --- [ task-1] o.hibernate.annotations.common.Version : HCANN000001: Hibernate Commons Annotations {5.1.2.Final}
2020-12-06 19:57:53.752 INFO 8560 --- [ task-1] org.hibernate.dialect.Dialect : HHH000400: Using dialect: org.hibernate.dialect.H2Dialect
2020-12-06 19:57:54.169 WARN 8560 --- [ restartedMain] o.s.b.f.support.DisposableBeanAdapter : Invocation of destroy method failed on bean with name 'entityManagerFactory': javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.MappingException: Could not instantiate id generator [entity-name=com.project1.entities.Project]
2020-12-06 19:57:54.169 INFO 8560 --- [ restartedMain] o.s.s.concurrent.ThreadPoolTaskExecutor : Shutting down ExecutorService 'applicationTaskExecutor'
2020-12-06 19:57:54.389 WARN 8560 --- [ restartedMain] o.s.b.f.support.DisposableBeanAdapter : Invocation of destroy method failed on bean with name 'inMemoryDatabaseShutdownExecutor': org.h2.jdbc.JdbcSQLNonTransientConnectionException: Database is already closed (to disable automatic closing at VM shutdown, add ";DB_CLOSE_ON_EXIT=FALSE" to the db URL) [90121-200]
2020-12-06 19:57:54.392 INFO 8560 --- [ restartedMain] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown initiated...
2020-12-06 19:57:54.400 INFO 8560 --- [ restartedMain] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown completed.
2020-12-06 19:57:54.405 INFO 8560 --- [ restartedMain] o.apache.catalina.core.StandardService : Stopping service [Tomcat]
2020-12-06 19:57:54.439 INFO 8560 --- [ restartedMain] ConditionEvaluationReportLoggingListener :
Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2020-12-06 19:57:54.489 ERROR 8560 --- [ restartedMain] o.s.boot.SpringApplication : Application run failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'homeController': Injection of autowired dependencies failed; nested exception is java.lang.IllegalArgumentException: Could not resolve placeholder 'version' in value "${version}"
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:405) ~[spring-beans-5.3.1.jar:5.3.1]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1415) ~[spring-beans-5.3.1.jar:5.3.1]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:608) ~[spring-beans-5.3.1.jar:5.3.1]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:531) ~[spring-beans-5.3.1.jar:5.3.1]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.1.jar:5.3.1]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.1.jar:5.3.1]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.1.jar:5.3.1]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.1.jar:5.3.1]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:944) ~[spring-beans-5.3.1.jar:5.3.1]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:925) ~[spring-context-5.3.1.jar:5.3.1]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:588) ~[spring-context-5.3.1.jar:5.3.1]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:144) ~[spring-boot-2.4.0.jar:2.4.0]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:767) ~[spring-boot-2.4.0.jar:2.4.0]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759) ~[spring-boot-2.4.0.jar:2.4.0]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:426) ~[spring-boot-2.4.0.jar:2.4.0]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:326) ~[spring-boot-2.4.0.jar:2.4.0]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1309) ~[spring-boot-2.4.0.jar:2.4.0]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1298) ~[spring-boot-2.4.0.jar:2.4.0]
at com.project1.PmaApplication.main(PmaApplication.java:12) ~[classes/:na]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
at java.base/java.lang.reflect.Method.invoke(Method.java:564) ~[na:na]
at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) ~[spring-boot-devtools-2.4.0.jar:2.4.0]
Caused by: java.lang.IllegalArgumentException: Could not resolve placeholder 'version' in value "${version}"
at org.springframework.util.PropertyPlaceholderHelper.parseStringValue(PropertyPlaceholderHelper.java:178) ~[spring-core-5.3.1.jar:5.3.1]
at org.springframework.util.PropertyPlaceholderHelper.replacePlaceholders(PropertyPlaceholderHelper.java:124) ~[spring-core-5.3.1.jar:5.3.1]
at org.springframework.core.env.AbstractPropertyResolver.doResolvePlaceholders(AbstractPropertyResolver.java:239) ~[spring-core-5.3.1.jar:5.3.1]
at org.springframework.core.env.AbstractPropertyResolver.resolveRequiredPlaceholders(AbstractPropertyResolver.java:210) ~[spring-core-5.3.1.jar:5.3.1]
at org.springframework.context.support.PropertySourcesPlaceholderConfigurer.lambda$processProperties$0(PropertySourcesPlaceholderConfigurer.java:175) ~[spring-context-5.3.1.jar:5.3.1]
at org.springframework.beans.factory.support.AbstractBeanFactory.resolveEmbeddedValue(AbstractBeanFactory.java:931) ~[spring-beans-5.3.1.jar:5.3.1]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1308) ~[spring-beans-5.3.1.jar:5.3.1]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1287) ~[spring-beans-5.3.1.jar:5.3.1]
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) ~[spring-beans-5.3.1.jar:5.3.1]
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:119) ~[spring-beans-5.3.1.jar:5.3.1]
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) ~[spring-beans-5.3.1.jar:5.3.1]
... 23 common frames omitted
The parent tag right underneath the model version in the pom.xml file is underlined in red and when I hover over it it shows this.
Execution default-resources of goal org.apache.maven.plugins:maven-resources-plugin:3.2.0:resources failed: newPosition < 0: (-1 < 0) (org.apache.maven.plugins:maven-resources-plugin:3.2.0:resources:default-resources:process-resources)
org.apache.maven.plugin.PluginExecutionException: Execution default-resources of goal org.apache.maven.plugins:maven-resources-plugin:3.2.0:resources failed: newPosition < 0: (-1 < 0)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:148)
at org.eclipse.m2e.core.internal.embedder.MavenImpl.execute(MavenImpl.java:332)
at org.eclipse.m2e.core.internal.embedder.MavenImpl.lambda$8(MavenImpl.java:1379)
at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.executeBare(MavenExecutionContext.java:179)
at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:114)
at org.eclipse.m2e.core.internal.embedder.MavenImpl.execute(MavenImpl.java:1378)
at org.eclipse.m2e.core.project.configurator.MojoExecutionBuildParticipant.build(MojoExecutionBuildParticipant.java:54)
at org.eclipse.m2e.core.internal.builder.MavenBuilderImpl.build(MavenBuilderImpl.java:135)
at org.eclipse.m2e.core.internal.builder.MavenBuilder$1.method(MavenBuilder.java:169)
at org.eclipse.m2e.core.internal.builder.MavenBuilder$1.method(MavenBuilder.java:1)
at org.eclipse.m2e.core.internal.builder.MavenBuilder$BuildMethod.lambda$1(MavenBuilder.java:114)
at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.executeBare(MavenExecutionContext.java:179)
at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:114)
at org.eclipse.m2e.core.internal.builder.MavenBuilder$BuildMethod.lambda$0(MavenBuilder.java:105)
at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.executeBare(MavenExecutionContext.java:179)
at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:153)
at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:101)
at org.eclipse.m2e.core.internal.builder.MavenBuilder$BuildMethod.execute(MavenBuilder.java:88)
at org.eclipse.m2e.core.internal.builder.MavenBuilder.build(MavenBuilder.java:197)
at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:832)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:220)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:263)
at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:316)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:319)
at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:371)
at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:392)
at org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:154)
at org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:244)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)
Caused by: java.lang.IllegalArgumentException: newPosition < 0: (-1 < 0)
at java.base/java.nio.Buffer.createPositionException(Buffer.java:334)
at java.base/java.nio.Buffer.position(Buffer.java:309)
at java.base/java.nio.ByteBuffer.position(ByteBuffer.java:1309)
at java.base/java.nio.ByteBuffer.position(ByteBuffer.java:266)
at org.apache.maven.shared.utils.io.FileUtils.copyFile(FileUtils.java:1946)
at org.apache.maven.shared.filtering.DefaultMavenFileFilter.copyFile(DefaultMavenFileFilter.java:98)
at org.apache.maven.shared.filtering.DefaultMavenResourcesFiltering.filterResources(DefaultMavenResourcesFiltering.java:262)
at org.apache.maven.plugins.resources.ResourcesMojo.execute(ResourcesMojo.java:356)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:137)
... 30 more
Here's the pom.xml file and the tag right underneath the model version
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.4.0</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.project1</groupId>
<artifactId>PMA-Application</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>PMA-Application</name>
<description>The PMA Web App</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<scope>runtime</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>

I had the same exact problem, hope I can still help somebody with this.
If you're using eclipse go to
File > Properties > Java Build Path > Source
and now under src/main/resources at "Excluded" it said for me "**", make sure to delete this entry so that it sais "(None)". Fixed it for me.

add #PropertySource({"classpath:resource.properties"}) on your controller

cant connect to mysql databse using spring boot

When I am hitting url(http://localhost:8080/pjt/samples) in Postman for json data,it shows the following error.
{
"timestamp": "2020-05-17T10:54:26.705+0000",
"status": 404,
"error": "Not Found",
"message": "No message available",
"path": "/pjt/samples"
}
1)pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.2.7.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>samplepjt</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>samplepjt</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
2)model:
package model;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;
#Entity
#Table(name = "samples")
public class Sample {
private Long id ;
private String name;
private String city;
public Sample(String name, String city) {
this.name = name;
this.city = city;
}
#Id
#GeneratedValue(strategy = GenerationType.AUTO)
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
#Column(name = "name", nullable = false)
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
#Column(name = "city", nullable = false)
public String getCity() {
return city;
}
public void setCity(String city) {
this.city = city;
}
#Override
public String toString() {
return "Sample [id=" + id + ",name=" + name + ", city=" + city + "]";
}
}
3)repository
package repository;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;
import model.Sample;
#Repository
public interface SampleRepository extends JpaRepository<Sample,Long>{
}
4)controller
package controller;
import java.util.List;
import javax.validation.Valid;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import model.Sample;
import repository.SampleRepository;
#RestController
#RequestMapping("/pjt")
public class SampleController {
#Autowired
private SampleRepository sampleRepository;
#PostMapping("/samples")
public Sample createSample(#Valid #RequestBody Sample sample) {
return sampleRepository.save(sample);
}
#GetMapping("/samples")
public List<Sample> getAllSample() {
return sampleRepository.findAll();
}
}
5)main function
package com.example.demo;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
#SpringBootApplication
public class SamplepjtApplication {
public static void main(String[] args) {
SpringApplication.run(SamplepjtApplication.class, args);
}
}
6)application.properties
spring.datasource.url = jdbc:mysql://localhost:3306/sampledb?useSSL=false
spring.datasource.username = root
spring.datasource.password = dali
spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.MySQL5InnoDBDialect
spring.jpa.hibernate.ddl-auto = update
. ____ _ __ _ _
/\ / ' __ _ ()_ __ __ _ \ \ \ \
( ( )_ | '_ | '| | ' / ` | \ \ \ \
\/ )| |)| | | | | || (| | ) ) ) )
' |____| .|| ||| |__, | / / / /
=========|_|==============|___/=///_/
:: Spring Boot :: (v2.2.7.RELEASE)
2020-05-17 16:47:56.159 INFO 3688 --- [ main] com.example.demo.SamplepjtApplication : No active profile set, falling back to default profiles: default
2020-05-17 16:47:58.395 INFO 3688 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data JPA repositories in DEFAULT mode.
2020-05-17 16:47:58.476 INFO 3688 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 49ms. Found 0 JPA repository interfaces.
2020-05-17 16:48:00.119 INFO 3688 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8081 (http)
2020-05-17 16:48:00.142 INFO 3688 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2020-05-17 16:48:00.143 INFO 3688 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.34]
2020-05-17 16:48:00.496 INFO 3688 --- [ main] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2020-05-17 16:48:00.497 INFO 3688 --- [ main] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 4199 ms
2020-05-17 16:48:00.980 INFO 3688 --- [ main] o.hibernate.jpa.internal.util.LogHelper : HHH000204: Processing PersistenceUnitInfo [name: default]
2020-05-17 16:48:01.156 INFO 3688 --- [ main] org.hibernate.Version : HHH000412: Hibernate ORM core version 5.4.15.Final
2020-05-17 16:48:01.579 INFO 3688 --- [ main] o.hibernate.annotations.common.Version : HCANN000001: Hibernate Commons Annotations {5.1.0.Final}
2020-05-17 16:48:01.898 INFO 3688 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Starting...
2020-05-17 16:48:02.714 INFO 3688 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Start completed.
2020-05-17 16:48:02.771 INFO 3688 --- [ main] org.hibernate.dialect.Dialect : HHH000400: Using dialect: org.hibernate.dialect.MySQL5InnoDBDialect
2020-05-17 16:48:03.635 INFO 3688 --- [ main] o.h.e.t.j.p.i.JtaPlatformInitiator : HHH000490: Using JtaPlatform implementation:[org.hibernate.engine.transaction.jta.platform.internal.NoJtaPlatform]
2020-05-17 16:48:03.660 INFO 3688 --- [ main] j.LocalContainerEntityManagerFactoryBean : Initialized JPA EntityManagerFactory for persistence unit 'default'
2020-05-17 16:48:04.042 WARN 3688 --- [ main] JpaBaseConfiguration$JpaWebConfiguration : spring.jpa.open-in-view is enabled by default. Therefore, database queries may be performed during view rendering. Explicitly configure spring.jpa.open-in-view to disable this warning
2020-05-17 16:48:04.388 INFO 3688 --- [ main] o.s.s.concurrent.ThreadPoolTaskExecutor : Initializing ExecutorService 'applicationTaskExecutor'
2020-05-17 16:48:04.845 INFO 3688 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port(s): 8081 (http) with context path ''
2020-05-17 16:48:04.849 INFO 3688 --- [ main] com.example.demo.SamplepjtApplication : Started SamplepjtApplication in 9.906 seconds (JVM running for 12.757)
2020-05-17 16:48:13.367 INFO 3688 --- [nio-8081-exec-2] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring DispatcherServlet 'dispatcherServlet'
2020-05-17 16:48:13.369 INFO 3688 --- [nio-8081-exec-2] o.s.web.servlet.DispatcherServlet : Initializing Servlet 'dispatcherServlet'
2020-05-17 16:48:13.395 INFO 3688 --- [nio-8081-exec-2] o.s.web.servlet.DispatcherServlet : Completed initialization in 25 ms
Can anyone help me to fix this issue?

You have to place the SampleController.java in com.example.demo.controller & SampleRepository.java in com.example.demo.repository. Or all the files should be in com.example.demo folder.
Because #SpringBootApplication has to scan all the components. Go through this doc for better understanding https://docs.spring.io/spring-boot/docs/2.0.0.RELEASE/reference/html/using-boot-structuring-your-code.html.

Java Spring - Error starting ApplicationContext. Error creating bean with name 'entityManagerFactory'

My app is a Spring MVC Application with PostgreSQL database. I'm using Maven, and STS IDE.
I was trying to resolve this problem to my own, but i have to surrender. If you have some time, please look at this code:
Spring Application
package com.example.dv;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
#SpringBootApplication
public class SpringDataViewerApplication {
public static void main(String[] args) {
SpringApplication.run(SpringDataViewerApplication.class, args);
}
}
WebController
package com.example.controller;
import java.util.ArrayList;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import com.example.model.Seria;
import com.example.repo.*;
#RestController
public class WebController {
#Autowired
SeriaRepository repo;
#RequestMapping("/findall")
public List<Seria> findAll()
{
List<Seria> result = new ArrayList<Seria>();
for(Seria s : repo.findAll())
{
result.add(s);
}
return result;
}
}
My Entity class
package com.example.model;
import java.time.*;
import java.util.UUID;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.Table;
#Entity
#Table(name="serie")
public class Seria {
#Id
private Long id;
private String name;
private String file;
private UUID cassid;
private Long categoryid;
private LocalDate datefrom;
private int frequency;
private Long[] markers;
private String unit;
private String feed;
private Long userid;
private LocalDateTime createdate;
private LocalDateTime changedate;
protected Seria() {}
public Seria(Long id, String name, String file, UUID cassid, Long categoryid, LocalDate datefrom, int frequency, Long[] markers, String unit, String feed, Long userid, LocalDateTime createdate, LocalDateTime changedate)
{
this.id = id;
this.name = name;
this.file = file;
this.cassid = cassid;
this.categoryid = categoryid;
this.datefrom = datefrom;
this.frequency = frequency;
this.markers = markers;
this.unit = unit;
this.feed = feed;
this.userid = userid;
this.createdate = createdate;
this.changedate = changedate;
}
public void setId(Long Id)
{
id = Id;
}
public Long getId()
{
return id;
}
public void setName(String Name)
{
name = Name;
}
public String getName()
{
return name;
}
public void setFile(String File)
{
file = File;
}
public String getFile()
{
return file;
}
public void setCassid(UUID Cassid)
{
cassid = Cassid;
}
public UUID getCassid()
{
return cassid;
}
public void setCategoryid(Long Categoryid)
{
categoryid = Categoryid;
}
public Long getCategoryid()
{
return categoryid;
}
public void setDatefrom(LocalDate Datefrom)
{
datefrom = Datefrom;
}
public LocalDate getDatefrom()
{
return datefrom;
}
public void setFrequency(int Frequency)
{
frequency = Frequency;
}
public int getFrequency()
{
return frequency;
}
public void setMarkers(Long[] Markers)
{
markers = Markers;
}
public Long[] getMarkers()
{
return markers;
}
public void setUnit(String Unit)
{
unit = Unit;
}
public String getUnit()
{
return unit;
}
public void setFeed(String Feed)
{
feed = Feed;
}
public String getFeed()
{
return feed;
}
public void setUserid(Long Userid)
{
userid = Userid;
}
public Long getUserid()
{
return userid;
}
public void setCreatedate(LocalDateTime Createdate)
{
createdate = Createdate;
}
public LocalDateTime getCreatedate()
{
return createdate;
}
public void setChangedate(LocalDateTime Changeedate)
{
changedate = Changeedate;
}
public LocalDateTime getChangedate()
{
return changedate;
}
}
DAO class
package com.example.repo;
import org.springframework.data.repository.CrudRepository;
import com.example.model.*;
public interface SeriaRepository extends CrudRepository<Seria, Long>{
}
POM.xml file
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>pl.pawelmalysz</groupId>
<artifactId>SpringDataViewer</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>SpringDataViewer</name>
<description>Spring boot data viewer</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.3.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>10</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
I was trying to fix this by deleting hibernate folders in maven directory and reinstall it, but it doesn't works.
UPDATE:
Application propeties
spring.datasource.url=jdbc:postgresql://localhost/test
spring.datasource.username=postgres
spring.datasource.password=post
spring.jpa.generate-ddl=true
Stack
SpringDataViewer - SpringDataViewerApplication [Spring Boot App]
com.example.dv.SpringDataViewerApplication at localhost:54188
Thread [main] (Suspended (exception BeanCreationException))
ReflectionUtils.rethrowRuntimeException(Throwable) line: 322
SpringApplication.handleRunFailure(ConfigurableApplicationContext, Throwable, Collection<SpringBootExceptionReporter>, SpringApplicationRunListeners) line: 825
SpringApplication.run(String...) line: 338
SpringApplication.run(Class<?>[], String[]) line: 1255
SpringApplication.run(Class<?>, String...) line: 1243
SpringDataViewerApplication.main(String[]) line: 10
C:\Program Files\Java\jre-10.0.1\bin\javaw.exe (10 lip 2018, 12:12:45)
Logs after deleting .m2 maven folder and redownload it by IDE.
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v2.0.3.RELEASE)
2018-07-10 12:50:00.031 INFO 16716 --- [ main] c.e.dv.SpringDataViewerApplication : Starting SpringDataViewerApplication on DESKTOP-0ONCQ2O with PID 16716 (C:\Users\Wolfik\Documents\workspace-sts-3.9.4.RELEASE\SpringDataViewer\target\classes started by Wolfik in C:\Users\Wolfik\Documents\workspace-sts-3.9.4.RELEASE\SpringDataViewer)
2018-07-10 12:50:00.033 INFO 16716 --- [ main] c.e.dv.SpringDataViewerApplication : No active profile set, falling back to default profiles: default
2018-07-10 12:50:00.270 INFO 16716 --- [ main] ConfigServletWebServerApplicationContext : Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext#524f3b3a: startup date [Tue Jul 10 12:50:00 CEST 2018]; root of context hierarchy
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by org.springframework.cglib.core.ReflectUtils$1 (file:/C:/Users/Wolfik/.m2/repository/org/springframework/spring-core/5.0.7.RELEASE/spring-core-5.0.7.RELEASE.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int,java.security.ProtectionDomain)
WARNING: Please consider reporting this to the maintainers of org.springframework.cglib.core.ReflectUtils$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
2018-07-10 12:50:01.318 INFO 16716 --- [ main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration' of type [org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration$$EnhancerBySpringCGLIB$$7beb6de2] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2018-07-10 12:50:01.566 INFO 16716 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http)
2018-07-10 12:50:01.592 INFO 16716 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2018-07-10 12:50:01.592 INFO 16716 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet Engine: Apache Tomcat/8.5.31
2018-07-10 12:50:01.597 INFO 16716 --- [ost-startStop-1] o.a.catalina.core.AprLifecycleListener : The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: [C:\Program Files\Java\jdk-10.0.1\bin;C:\WINDOWS\Sun\Java\bin;C:\WINDOWS\system32;C:\WINDOWS;C:\Program Files (x86)\Common Files\Oracle\Java\javapath;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\System32\WindowsPowerShell\v1.0\;C:\Program Files\dotnet\;C:\Program Files\Microsoft SQL Server\130\Tools\Binn\;C:\Program Files\Common Files\Autodesk Shared\;C:\Program Files (x86)\NVIDIA Corporation\PhysX\Common;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\System32\WindowsPowerShell\v1.0\;C:\WINDOWS\System32\OpenSSH\;E:\Git\cmd;C:\Users\Wolfik\AppData\Local\Microsoft\WindowsApps;;.]
2018-07-10 12:50:01.743 INFO 16716 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2018-07-10 12:50:01.743 INFO 16716 --- [ost-startStop-1] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 1544 ms
2018-07-10 12:50:01.894 INFO 16716 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean : Servlet dispatcherServlet mapped to [/]
2018-07-10 12:50:01.898 INFO 16716 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'characterEncodingFilter' to: [/*]
2018-07-10 12:50:01.899 INFO 16716 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'hiddenHttpMethodFilter' to: [/*]
2018-07-10 12:50:01.899 INFO 16716 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'httpPutFormContentFilter' to: [/*]
2018-07-10 12:50:01.899 INFO 16716 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'requestContextFilter' to: [/*]
2018-07-10 12:50:02.053 INFO 16716 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Starting...
2018-07-10 12:50:02.265 INFO 16716 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Start completed.
2018-07-10 12:50:02.302 INFO 16716 --- [ main] j.LocalContainerEntityManagerFactoryBean : Building JPA container EntityManagerFactory for persistence unit 'default'
2018-07-10 12:50:02.313 INFO 16716 --- [ main] o.hibernate.jpa.internal.util.LogHelper : HHH000204: Processing PersistenceUnitInfo [
name: default
...]
2018-07-10 12:50:02.376 INFO 16716 --- [ main] org.hibernate.Version : HHH000412: Hibernate Core {5.2.17.Final}
2018-07-10 12:50:02.378 INFO 16716 --- [ main] org.hibernate.cfg.Environment : HHH000206: hibernate.properties not found
2018-07-10 12:50:02.450 INFO 16716 --- [ main] o.hibernate.annotations.common.Version : HCANN000001: Hibernate Commons Annotations {5.0.1.Final}
2018-07-10 12:50:02.561 INFO 16716 --- [ main] org.hibernate.dialect.Dialect : HHH000400: Using dialect: org.hibernate.dialect.PostgreSQL95Dialect
2018-07-10 12:50:02.714 INFO 16716 --- [ main] o.h.e.j.e.i.LobCreatorBuilderImpl : HHH000424: Disabling contextual LOB creation as createClob() method threw error : java.lang.reflect.InvocationTargetException
java.lang.reflect.InvocationTargetException: null
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
at java.base/java.lang.reflect.Method.invoke(Method.java:564) ~[na:na]
at org.hibernate.engine.jdbc.env.internal.LobCreatorBuilderImpl.useContextualLobCreation(LobCreatorBuilderImpl.java:113) [hibernate-core-5.2.17.Final.jar:5.2.17.Final]
at org.hibernate.engine.jdbc.env.internal.LobCreatorBuilderImpl.makeLobCreatorBuilder(LobCreatorBuilderImpl.java:54) [hibernate-core-5.2.17.Final.jar:5.2.17.Final]
at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentImpl.<init>(JdbcEnvironmentImpl.java:271) [hibernate-core-5.2.17.Final.jar:5.2.17.Final]
at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:114) [hibernate-core-5.2.17.Final.jar:5.2.17.Final]
at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:35) [hibernate-core-5.2.17.Final.jar:5.2.17.Final]
at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:88) [hibernate-core-5.2.17.Final.jar:5.2.17.Final]
at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:259) [hibernate-core-5.2.17.Final.jar:5.2.17.Final]
at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:233) [hibernate-core-5.2.17.Final.jar:5.2.17.Final]
at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:210) [hibernate-core-5.2.17.Final.jar:5.2.17.Final]
at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.configure(JdbcServicesImpl.java:51) [hibernate-core-5.2.17.Final.jar:5.2.17.Final]
at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:94) [hibernate-core-5.2.17.Final.jar:5.2.17.Final]
at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:242) [hibernate-core-5.2.17.Final.jar:5.2.17.Final]
at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:210) [hibernate-core-5.2.17.Final.jar:5.2.17.Final]
at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.handleTypes(MetadataBuildingProcess.java:352) [hibernate-core-5.2.17.Final.jar:5.2.17.Final]
at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:111) [hibernate-core-5.2.17.Final.jar:5.2.17.Final]
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.metadata(EntityManagerFactoryBuilderImpl.java:861) [hibernate-core-5.2.17.Final.jar:5.2.17.Final]
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:888) [hibernate-core-5.2.17.Final.jar:5.2.17.Final]
at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:57) [spring-orm-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:365) [spring-orm-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:390) [spring-orm-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:377) [spring-orm-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:341) [spring-orm-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1769) [spring-beans-5.0.3.RELEASE.jar:5.0.3.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1706) [spring-beans-5.0.3.RELEASE.jar:5.0.3.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:583) [spring-beans-5.0.3.RELEASE.jar:5.0.3.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:502) [spring-beans-5.0.3.RELEASE.jar:5.0.3.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:312) [spring-beans-5.0.3.RELEASE.jar:5.0.3.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228) ~[spring-beans-5.0.3.RELEASE.jar:5.0.3.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:310) [spring-beans-5.0.3.RELEASE.jar:5.0.3.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200) [spring-beans-5.0.3.RELEASE.jar:5.0.3.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1089) ~[spring-context-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:859) ~[spring-context-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) ~[spring-context-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:140) ~[spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759) ~[spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:395) ~[spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:327) ~[spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1255) ~[spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1243) ~[spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
at com.example.dv.SpringDataViewerApplication.main(SpringDataViewerApplication.java:13) ~[classes/:na]
Caused by: java.sql.SQLFeatureNotSupportedException: Metoda org.postgresql.jdbc.PgConnection.createClob()nie jest jeszcze obsługiwana.
at org.postgresql.Driver.notImplemented(Driver.java:683) ~[postgresql-42.2.2.jar:42.2.2]
at org.postgresql.jdbc.PgConnection.createClob(PgConnection.java:1252) ~[postgresql-42.2.2.jar:42.2.2]
... 44 common frames omitted
2018-07-10 12:50:02.717 INFO 16716 --- [ main] org.hibernate.type.BasicTypeRegistry : HHH000270: Type registration [java.util.UUID] overrides previous : org.hibernate.type.UUIDBinaryType#15986dd5
2018-07-10 12:50:02.890 INFO 16716 --- [ main] j.LocalContainerEntityManagerFactoryBean : Initialized JPA EntityManagerFactory for persistence unit 'default'
2018-07-10 12:50:03.068 WARN 16716 --- [ main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'seriaRepository': Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: Not a managed type: class com.example.model.Seria
2018-07-10 12:50:03.068 INFO 16716 --- [ main] j.LocalContainerEntityManagerFactoryBean : Closing JPA EntityManagerFactory for persistence unit 'default'
2018-07-10 12:50:03.068 INFO 16716 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown initiated...
2018-07-10 12:50:03.081 INFO 16716 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown completed.
2018-07-10 12:50:03.083 INFO 16716 --- [ main] o.apache.catalina.core.StandardService : Stopping service [Tomcat]
2018-07-10 12:50:03.108 INFO 16716 --- [ main] ConditionEvaluationReportLoggingListener :
Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2018-07-10 12:50:03.114 ERROR 16716 --- [ main] o.s.boot.SpringApplication : Application run failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'seriaRepository': Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: Not a managed type: class com.example.model.Seria
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1710) ~[spring-beans-5.0.3.RELEASE.jar:5.0.3.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:583) ~[spring-beans-5.0.3.RELEASE.jar:5.0.3.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:502) ~[spring-beans-5.0.3.RELEASE.jar:5.0.3.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:312) ~[spring-beans-5.0.3.RELEASE.jar:5.0.3.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228) ~[spring-beans-5.0.3.RELEASE.jar:5.0.3.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:310) ~[spring-beans-5.0.3.RELEASE.jar:5.0.3.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200) ~[spring-beans-5.0.3.RELEASE.jar:5.0.3.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:742) ~[spring-beans-5.0.3.RELEASE.jar:5.0.3.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:869) ~[spring-context-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) ~[spring-context-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:140) ~[spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:395) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:327) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1255) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1243) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
at com.example.dv.SpringDataViewerApplication.main(SpringDataViewerApplication.java:13) [classes/:na]
Caused by: java.lang.IllegalArgumentException: Not a managed type: class com.example.model.Seria
at org.hibernate.metamodel.internal.MetamodelImpl.managedType(MetamodelImpl.java:473) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final]
at org.springframework.data.jpa.repository.support.JpaMetamodelEntityInformation.<init>(JpaMetamodelEntityInformation.java:73) ~[spring-data-jpa-2.0.8.RELEASE.jar:2.0.8.RELEASE]
at org.springframework.data.jpa.repository.support.JpaEntityInformationSupport.getEntityInformation(JpaEntityInformationSupport.java:66) ~[spring-data-jpa-2.0.8.RELEASE.jar:2.0.8.RELEASE]
at org.springframework.data.jpa.repository.support.JpaRepositoryFactory.getEntityInformation(JpaRepositoryFactory.java:181) ~[spring-data-jpa-2.0.8.RELEASE.jar:2.0.8.RELEASE]
at org.springframework.data.jpa.repository.support.JpaRepositoryFactory.getTargetRepository(JpaRepositoryFactory.java:119) ~[spring-data-jpa-2.0.8.RELEASE.jar:2.0.8.RELEASE]
at org.springframework.data.jpa.repository.support.JpaRepositoryFactory.getTargetRepository(JpaRepositoryFactory.java:102) ~[spring-data-jpa-2.0.8.RELEASE.jar:2.0.8.RELEASE]
at org.springframework.data.repository.core.support.RepositoryFactorySupport.getRepository(RepositoryFactorySupport.java:298) ~[spring-data-commons-2.0.8.RELEASE.jar:2.0.8.RELEASE]
at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.lambda$afterPropertiesSet$3(RepositoryFactoryBeanSupport.java:287) ~[spring-data-commons-2.0.8.RELEASE.jar:2.0.8.RELEASE]
at org.springframework.data.util.Lazy.getNullable(Lazy.java:141) ~[spring-data-commons-2.0.8.RELEASE.jar:2.0.8.RELEASE]
at org.springframework.data.util.Lazy.get(Lazy.java:63) ~[spring-data-commons-2.0.8.RELEASE.jar:2.0.8.RELEASE]
at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.afterPropertiesSet(RepositoryFactoryBeanSupport.java:290) ~[spring-data-commons-2.0.8.RELEASE.jar:2.0.8.RELEASE]
at org.springframework.data.jpa.repository.support.JpaRepositoryFactoryBean.afterPropertiesSet(JpaRepositoryFactoryBean.java:102) ~[spring-data-jpa-2.0.8.RELEASE.jar:2.0.8.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1769) ~[spring-beans-5.0.3.RELEASE.jar:5.0.3.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1706) ~[spring-beans-5.0.3.RELEASE.jar:5.0.3.RELEASE]
... 16 common frames omitted

Its a problem with maven dependencies. Go to your .m2 folder and erase de folder of javassist. Then update your maven dependencies and it's gonna work

In the end, I solved this problem. For anyone who has similar errors, try to add an annotation in the main application "Application.java"
#EnableJpaRepositories("com.example.repo")
#EntityScan("com.example.yourEntityPackage)

Not a managed type: class com.example.model.Seria
fix that please, add it to mapped classes