Develop Reference

Consider defining a bean named 'elasticsearchTemplate' in your configuration

I have just started springboot and tried to implement elastic search with spring-boot but I am getting this type of error while running spring-boot app
Consider defining a bean named 'elasticsearchTemplate' in your configuration.
POM.XML
<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.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
</dependency>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
</dependency>
<dependency>
<groupId>org.webjars</groupId>
<artifactId>bootstrap</artifactId>
<version>4.0.0</version>
</dependency>
<dependency>
<groupId>org.elasticsearch.client</groupId>
<artifactId>transport</artifactId>
<version>5.6.10</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-elasticsearch</artifactId>
</dependency>
</dependencies>
Repository
#Repository
public interface StudentRepository extends ElasticsearchRepository<Student, Integer>{}
Controller
#RestController
public class Controller {
#Autowired
StudentRepository studentRepo;
#GetMapping(value="/student/all")
List<Student> getAllStudent() {
Iterator<Student> studentList = studentRepo.findAll().iterator();
List<Student> students = new ArrayList<>();
if(studentList.hasNext()) {
students.add(studentList.next());
}
return students;
}
#PostMapping(value="/student/add")
String addStudent(#RequestBody Student student) {
studentRepo.save(student);
return "Record Added Successfully";
}
#DeleteMapping(value="/student/delete/{id}")
String deleteStudent(#PathVariable int id) {
studentRepo.deleteById(id);
return "Record Deleted Successfully";
}
//#GetMapping(value="/student/findById/{id}")
}
Can Anyone help me to resolve this error
Consider defining a bean named 'elasticsearchTemplate' in your configuration.

You need to define some elastic search properties in your application.properties file such as cluster-nodes, cluster-names which are used by ElasticsearchTemplate and ElasticsearchRepository to connect to the Elasticsearch engine.
You can refer below mentioned link :
https://dzone.com/articles/elasticsearch-with-spring-boot-application

Note: Please refer to the spring-data-elasticsearch-versions or Spring Data Elasticsearch Changelog (check Elasticsearch version of desired release) to check version compatibility.
Solution(1):
If you want to use spring boot 1.x, simply create a #Configuration class and add a ElasticsearchOperations Bean. Please note than spring boot 1.x does not support the latest versions of ElasticSearch 5.x and higher.
cluster.name: make sure the cluster name you set in the code is the same as the cluster.name you set in $ES_HOME/config/elasticsearch.yml
#Configuration
public class ElasticSearchConfig {
#Bean
public ElasticsearchOperations elasticsearchTemplate() throws UnknownHostException {
return new ElasticsearchTemplate(getClient());
}
#Bean
public Client getClient() throws UnknownHostException {
Settings setting = Settings
.builder()
.put("client.transport.sniff", true)
.put("path.home", "/usr/share/elasticsearch") //elasticsearch home path
.put("cluster.name", "elasticsearch")
.build();
//please note that client port here is 9300 not 9200!
TransportClient client = new PreBuiltTransportClient(setting)
.addTransportAddress(new TransportAddress(InetAddress.getByName("127.0.0.1"), 9300));
return client;
}
}
Solution (2):Also, you can refer to this spring boot issue that shows automatic configuration of the Elasticsearch in the spring data from spring boot 2.2.0.
Therefore, using spring boot 2.2 and spring-boot-starter-elasticserach you don't need to configure the Elasticsearch manually.
Sample working project:
Versions:
spring boot : 2.2.0.RELEASE
Elasticsearch: 6.6.2
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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.example</groupId>
<artifactId>spring-boot-elasticsearch</artifactId>
<version>1.0-SNAPSHOT</version>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.2.0.RELEASE</version>
</parent>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-elasticsearch</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
</project>
application.properties:
spring.data.elasticsearch.cluster-name=elasticsearch
spring.data.elasticsearch.cluster-nodes=localhost:9300
spring.elasticsearch.jest.uris=http://localhost:9200
Main Application class:
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
#SpringBootApplication
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
Model class:
import lombok.*;
import org.springframework.data.annotation.Id;
import org.springframework.data.elasticsearch.annotations.Document;
#Document(indexName = "your_index", type = "books")
public class Book {
#Id
private String id;
private String title;
private String author;
private String releaseDate;
//getter, setter/constructors
}
Repository class:
import com.example.model.Book;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
import org.springframework.data.elasticsearch.repository.ElasticsearchRepository;
import org.springframework.stereotype.Repository;
import java.util.List;
#Repository
public interface BookRepository extends ElasticsearchRepository<Book, String> {
Page<Book> findByAuthor(String author, Pageable pageable);
List<Book> findByTitle(String title);
}
Service class:
some methods to test:
import com.example.model.Book;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
import java.util.List;
public interface BookService {
Book save(Book book);
void delete(Book book);
Book findOne(String id);
Iterable<Book> findAll();
Page<Book> findByAuthor(String author, Pageable pageable);
List<Book> findByTitle(String title);
}
Service implementation:
import com.example.model.Book;
import com.example.repository.BookRepository;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
import org.springframework.stereotype.Service;
import java.util.List;
#Service
public class BookServiceImpl implements BookService {
private BookRepository bookRepository;
public BookServiceImpl(BookRepository bookRepository) {
this.bookRepository = bookRepository;
}
#Override
public Book save(Book book) {
return bookRepository.save(book);
}
#Override
public void delete(Book book) {
bookRepository.delete(book);
}
#Override
public Book findOne(String id) {
return bookRepository.findById(id).orElse(null);
}
#Override
public Iterable<Book> findAll() {
return bookRepository.findAll();
}
#Override
public Page<Book> findByAuthor(String author, Pageable pageable) {
return bookRepository.findByAuthor(author, pageable);
}
#Override
public List<Book> findByTitle(String title) {
return bookRepository.findByTitle(title);
}
}
Test class:
#RunWith(SpringRunner.class)
#SpringBootTest(classes = Application.class)
public class BookTest {
#Autowired
private BookService bookService;
#Autowired
private ElasticsearchTemplate esTemplate;
#Before
public void before(){
esTemplate.deleteIndex(Book.class);
esTemplate.createIndex(Book.class);
esTemplate.putMapping(Book.class);
esTemplate.refresh(Book.class);
}
#Test
public void testSave(){
Book book = new Book("1001", "Elasticsearch", "title", "23-FEB-2017");
Book testBook = bookService.save(book);
assertNotNull(testBook.getId());
assertEquals(testBook.getTitle(), book.getTitle());
assertEquals(testBook.getAuthor(), book.getAuthor());
assertEquals(testBook.getReleaseDate(), book.getReleaseDate());
}
}

Repository won't Beanify

I have an error that I can't track down. I'm new so sorry if I missed this in the searches, but I tried several things and no luck.
UserApi.java:
package com.jsp.jsp;
import com.jsp.models.User;
import com.jsp.services.UserService;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
#RestController
class UserApi {
private final UserService userService;
public UserApi(UserService userService) {
this.userService = userService;
}
#RequestMapping(value="/api/user", method=RequestMethod.POST)
public User createUser(
#RequestParam(value="name", required=true) String name,
#RequestParam(value="email", required=true) String email,
#RequestParam(value="password", required=true) String password,
#RequestParam(value="confirm", required=true) String confirm)
{
User u = this.userService.createUser(new User(name, email, password));
return u;
}
}
UserRepository.java:
package com.jsp.repositories;
import org.springframework.stereotype.Repository;
import java.util.List;
import java.util.Optional;
import com.jsp.models.User;
import org.springframework.data.repository.CrudRepository;
#Repository
public interface UserRepository extends CrudRepository<User, Long> {
List<User> findByEmail(String email);
Optional<User> findById(Long id);
List<User> findAll();
}
Server.java
package com.jsp.jsp;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
// import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
#SpringBootApplication(scanBasePackages={"com.jsp.models","com.jsp.repositories","com.jsp.services"})
#RestController
public class Server {
public static void main(String[] args) {
SpringApplication.run(Server.class, args);
}
}
UserService.java
package com.jsp.services;
import java.util.List;
import com.jsp.models.User;
import com.jsp.repositories.UserRepository;
import org.springframework.stereotype.Service;
#Service
public class UserService {
private final UserRepository userRepository;
public UserService(UserRepository userRepository) {
this.userRepository = userRepository;
}
public List<User> allUsers() {
return this.userRepository.findAll();
}
public User createUser(User u) {
return this.userRepository.save(u);
}
}
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 http://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>2.1.2.RELEASE</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>
<groupId>com.jsp</groupId>
<artifactId>jsp</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>demo</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-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
</dependency>
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<version>42.2.5</version>
</dependency>
<dependency>
<groupId>org.mindrot</groupId>
<artifactId>jbcrypt</artifactId>
<version>0.4</version>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-jpa</artifactId>
<version>1.11.7.RELEASE</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
So in short, when I run the above project in VSCode, it errors out with the following:
2019-02-23 19:07:52.744 WARN 25412 --- [ restartedMain]
ConfigServletWebServerApplicationContext : Exception encountered
during context initialization - cancelling refresh attempt:
org.springframework.beans.factory.UnsatisfiedDependencyException:
Error creating bean with name 'userService' defined in file
[C:\Users\Alex\Documents\dojo\javatown\everything\target\classes\com\jsp\services\UserService.class]:
Unsatisfied dependency expressed through constructor parameter 0;
nested exception is
org.springframework.beans.factory.NoSuchBeanDefinitionException: No
qualifying bean of type 'com.jsp.repositories.UserRepository'
available: expected at least 1 bean which qualifies as autowire
candidate. Dependency annotations: {}
My understanding is that the repository I made should be automatically turned into a bean and then wire itself up to the service I made. However, that seems to be not happening. My example videos are using MySQL -- will that make a difference? Am I using the right driver for Postgres 11? I'm super lost.

Some remarks and suggestions:
1.add autowired annotation on your constructor, it is clearer what you need spring to do.
#Autowired
public UserService(UserRepository userRepository) {
this.userRepository = userRepository;
}
2. I don't understand #RestController annotation on your main class.
#SpringBootApplication(scanBasePackages {"com.jsp.models","com.jsp.repositories","com.jsp.services"})
#RestController --> THIS CAN BE REMOVED
public class Server {
public static void main(String[] args) {
SpringApplication.run(Server.class, args);
}
}
3.You should add #EnableJpaRepositories("com.jsp.repositories") on your spring boot application => it will scan the repositories in that package.
#SpringBootApplication(scanBasePackages {"com.jsp.models","com.jsp.repositories","com.jsp.services"})
#EnableJpaRepositories("com.jsp.repositories")
public class Server {
public static void main(String[] args) {
SpringApplication.run(Server.class, args);
}
}

Spring tries to deserialize to LinkedHashMap instead of POJO

I'm creating a simple rest controller with Spring Boot and the Web dependency. I'm trying to deserialize a JSON body to a test POJO with only 3 fields, but when I attempt to make a POST request, the server responds with a 500 error and the error I get in the console is:
.w.s.m.s.DefaultHandlerExceptionResolver : Failed to write HTTP message: org.springframework.http.converter.HttpMessageNotWritableException: No converter found for return value of type: class java.util.LinkedHashMap
All of the code I have written is as follows:
EmailApplication.java:
package com.test.email.app;
import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
#SpringBootApplication
#ComponentScan(basePackages = { "com.test.email" })
public class EmailApplication {
public static void main(String[] args) {
SpringApplication.run(EmailApplication.class, args);
}
#Bean
public CommandLineRunner commandLineRunner(ApplicationContext ctx) {
return args -> {
System.out.println("----- You're up and running with test-email-app! -----");
};
}
}
EmailController.java:
package com.test.email.controller;
import com.test.email.entity.TestEntity;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.bind.annotation.RequestMapping;
import java.net.URI;
#RestController
public class EmailController {
#RequestMapping(value = "/", method = RequestMethod.GET)
public String index() {
TestEntity entity = new TestEntity();
return "test-email-app index";
}
#RequestMapping(value = "/poster", method = RequestMethod.POST)
public ResponseEntity<String> poster(#RequestBody TestEntity testEntity) {
URI location = URI.create("/poster");
return ResponseEntity.created(location).body(testEntity.getUrl());
}
}
TestEntity.java
package com.test.email.entity;
/**
* An entity for serialization/deserialization testing
*/
public class TestEntity {
public String url;
public int count;
public double height;
public TestEntity() {}
public TestEntity(String url, int count, double height) {
this.url = url;
this.count = count;
this.height = height;
}
public String getUrl() {
return url;
}
public void setUrl(String url) {
this.url = url;
}
public int getCount() {
return count;
}
public void setCount(int count) {
this.count = count;
}
public double getHeight() {
return height;
}
public void setHeight(double height) {
this.height = height;
}
}
I'm making a POST request with Postman using only the header Content-Type: application/json and with the body:
{ "url": "http://google.com", "count": 3, "height": 2.4 }
I don't know why Spring can't convert from a LinkedHashMap to my POJO. Any help would be appreciated.
Edit:
My pom.xml is as follows:
<?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>com.test.email</groupId>
<artifactId>test-email-app</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>test-email-app</name>
<description>Demo project for Spring Boot</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>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</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>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>

After Analyzing your problem, I found some cases where this issue can arise.
Those are given bellow:
Inner Class:
If your class TestEntity is Inner class of your endpoint.
Just transfer your TestEntity from Inner class to a separate class and run your code, it will work.
Support Inner Class:
If you want to support inner class a RequestBody then make TestEntity class as static, this will solve your problem.
Spring dependency configuration:
If still not solved your problem, check your dependency on pom.xml. May be you are not adding dependency on proper way. For this you can view this answer . Or you can add jackson explicitly in your pom.xml file.
Dependencies are:
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>2.4.3</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.4.3</version>
</dependency>
Hope this will solve your problem :)
If still not solved your problem, check some youtube video or some blog site or download some open-source project from github.
Thanks :)
Related links:
Spring #Requestbody not mapping to inner class

Try to specify that your method consumes JSON. Change your annotation:
#RequestMapping(value = "/poster", method = RequestMethod.POST)
to
#PostMapping(value = "/poster",
consumes = MediaType.APPLICATION_JSON_UTF8_VALUE,
produces = MediaType.TEXT_HTML)
The main part here that you specify that you accept your input to be JSON. Not sure what type you return but you can specify the appropriate type or remove the "produces" part. The main part is to specify what your input is

Ideally this code should work but give a try by adding below dependency in pom.xml
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.5.0</version>
</dependency>

sqlite with hibernate and spring

I have a problem with sqlite3, hibernate and spring.In fact, if I start the program and call the createType () method that creates a type and after that I call the getAllTypes () method I have the values ​​of the object I just created appear in the browser.But if I check with a "select * from type" in my table type to see if the object was added in my table, I have no record. In addition, as soon as I restart the program and I call the method getAllTypes () to view the data of my table I have nothing that appears in my browser.Again, for each startup looks like the ID is reset since it starts at 1 (for example if after starting my program I try to insert 2 objects with the method createType () I have: ID = 1 and ID = 2 which appears in my browser). So if my data is not saved in my table where have they been? I made 2 recordings manually in my table and I also can not get these 2 records with the methods getAllTypes () which is supposed to send me all the records of my table. I'm told that there may be a communication problem between my program and my database.Thank you in advance for your help!!!
This is how I call my methods in browsers:
http://localhost:8080/types/getAllTypes
http://localhost:8080/types/insert
application.yml
spring:
profile:dev
jpa:
hibernate:
hbm2ddl.auto:update
properties:
hibernate:
dialect:org.hibernate.dialect.SQLiteDialect
datasource:
url:jdbc:sqlite:C:\Users\user pc\Desktop\PDF\testrest.db
username:user
password:password
driverClassName:org.sqlite.JDBC
My dependency in my pom.xml for the configuration of sqlite,hibernate and spring :
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.8.RELEASE</version>
<type>pom</type>
</parent>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>5.2.12.Final</version>
</dependency>
<dependency>
<groupId>org.xerial</groupId>
<artifactId>sqlite-jdbc</artifactId>
<version>3.20.1</version>
</dependency>
<dependency>
<groupId>com.zsoltfabok</groupId>
<artifactId>sqlite-dialect</artifactId>
<version>1.0</version>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<version>1.4.196</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>5.2.12.Final</version>
</dependency>
<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.apache.commons</groupId>
<artifactId>commons-collections4</artifactId>
<version>4.0</version>
</dependency>
<dependency>
<groupId>javax.xml.bind</groupId>
<artifactId>jaxb-api</artifactId>
<version>2.3.0</version>
<dependency>
My table type:
CREATE TABLE IF NOT EXISTS type(
idType integer NOT NULL PRIMARY KEY AUTOINCREMENT,
description varchar(256) NOT NULL
)
My entities type:
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;
#Entity
#Table(name="typedifficulte")
public class Type {
#Id
#GeneratedValue(strategy = GenerationType.AUTO)
private long idType;
private String description;
public Type() {
}
public Type(String description) {
this.description = description;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
public long getIdType() {
return idType;
}
public void setIdType(long idType) {
this.idType = idType;
}
}
My interface TypeService :
public interface TypeService {
Collection<Type> getAllTypes();
Type createType(Type type);
}
My TypeServiceImpl :
import javax.annotation.Resource;
import org.apache.commons.collections4.IteratorUtils;
import org.springframework.stereotype.Service;
#Service(value="typeService")
public class TypeServiceImpl implements TypeService {
#Resource
private TypeRepository typeRepository;
#Override
public Collection<Type> getAllTypes() {
return IteratorUtils.toList(this.typeRepository.findAll().iterator());
}
#Override
public Type createType(Type type) {
return this.typeRepository.save(type);
}
public TypeRepository getTypeRepository() {
return typeRepository;
}
public void setTypeRepository(TypeRepository typeRepository) {
this.typeRepository = typeRepository;
}
}
My TypeRepository :
public interface TypeRepository extends CrudRepository<Type,Long> {
Type findByDescription(String description);
}
My Controller :
#RestController
#RequestMapping(value ="/types")
public class TypeController {
#Resource
private TypeService typeService;
#RequestMapping(value= "/getAllTypes", method = RequestMethod.GET)
public Collection<Type> getAllTypes() {
return this.typeService.findAll();
}
#RequestMapping(value = "/insert",method = RequestMethod.GET)
public Type createType() {
return this.typeService.createType(new Type("test"));
}
}
And finally my startup class :
#Configuration
#EnableAutoConfiguration
#ComponentScan
public class MainLauncher {
public static void main(String[] args) {
SpringApplication.run(MainLauncher.class, args);
}
}

org.springframework.web.servlet.DispatcherServlet.initServletBean Context initialization failed

I use this tutorial for Spring MVC example, but I use PostgreSQL.
And I have a lot of exceptions, I have searched but nothing helped.
This is Exception:
SEVERE [RMI TCP Connection(3)-127.0.0.1] org.springframework.web.servlet.DispatcherServlet.initServletBean Context initialization failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'homeController': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private net.codejava.spring.dao.ContactDAO net.codejava.spring.controller.HomeController.contactDAO; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'getContactDAO' defined in class path resource [net/codejava/spring/config/MvcConfiguration.class]: Instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanDefinitionStoreException: Factory method [public net.codejava.spring.dao.ContactDAO net.codejava.spring.config.MvcConfiguration.getContactDAO()] threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'getDataSource' defined in class path resource [net/codejava/spring/config/MvcConfiguration.class]: Instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanDefinitionStoreException: Factory method [public javax.sql.DataSource net.codejava.spring.config.MvcConfiguration.getDataSource()] threw exception; nested exception is java.lang.IllegalStateException: Could not load JDBC driver class [org.postgresql.Driver]
If I understand right I have a problem with load JDBC Driver, but I already added this in pom.xml
My source code:
MvcConfiguration:
package net.codejava.spring.config;
import javax.sql.DataSource;
import net.codejava.spring.dao.ContactDAO;
import net.codejava.spring.dao.ContactDAOImpl;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.jdbc.datasource.DriverManagerDataSource;
import org.springframework.web.servlet.ViewResolver;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import org.springframework.web.servlet.view.InternalResourceViewResolver;
#Configuration
#ComponentScan(basePackages="net.codejava.spring")
#EnableWebMvc
public class MvcConfiguration extends WebMvcConfigurerAdapter{
#Bean
public ViewResolver getViewResolver(){
InternalResourceViewResolver resolver = new InternalResourceViewResolver();
resolver.setPrefix("/WEB-INF/views/");
resolver.setSuffix(".jsp");
return resolver;
}
#Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
registry.addResourceHandler("/resources/**").addResourceLocations("/resources/");
}
#Bean
public DataSource getDataSource() {
DriverManagerDataSource dataSource = new DriverManagerDataSource();
dataSource.setDriverClassName("org.postgresql.Driver");
dataSource.setUrl("jdbc:postgresql://localhost:5432/contactdb");
dataSource.setUsername("postgres");
dataSource.setPassword("3517571");
return dataSource;
}
#Bean
public ContactDAO getContactDAO() {
return new ContactDAOImpl(getDataSource());
}
}
HomeController:
package net.codejava.spring.controller;
import java.io.IOException;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import net.codejava.spring.dao.ContactDAO;
import net.codejava.spring.model.Contact;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;
/**
* This controller routes accesses to the application to the appropriate
* hanlder methods.
* #author www.codejava.net
*
*/
#Controller
public class HomeController {
#Autowired
private ContactDAO contactDAO;
#RequestMapping(value="/")
public ModelAndView listContact(ModelAndView model) throws IOException{
List<Contact> listContact = contactDAO.list();
model.addObject("listContact", listContact);
model.setViewName("home");
return model;
}
#RequestMapping(value = "/newContact", method = RequestMethod.GET)
public ModelAndView newContact(ModelAndView model) {
Contact newContact = new Contact();
model.addObject("contact", newContact);
model.setViewName("ContactForm");
return model;
}
#RequestMapping(value = "/saveContact", method = RequestMethod.POST)
public ModelAndView saveContact(#ModelAttribute Contact contact) {
contactDAO.saveOrUpdate(contact);
return new ModelAndView("redirect:/");
}
#RequestMapping(value = "/deleteContact", method = RequestMethod.GET)
public ModelAndView deleteContact(HttpServletRequest request) {
int contactId = Integer.parseInt(request.getParameter("id"));
contactDAO.delete(contactId);
return new ModelAndView("redirect:/");
}
#RequestMapping(value = "/editContact", method = RequestMethod.GET)
public ModelAndView editContact(HttpServletRequest request) {
int contactId = Integer.parseInt(request.getParameter("id"));
Contact contact = contactDAO.get(contactId);
ModelAndView model = new ModelAndView("ContactForm");
model.addObject("contact", contact);
return model;
}
}
ContactDAO:
package net.codejava.spring.dao;
import java.util.List;
import net.codejava.spring.model.Contact;
/**
* Defines DAO operations for the contact model.
* #author www.codejava.net
*
*/
public interface ContactDAO {
public void saveOrUpdate(Contact contact);
public void delete(int contactId);
public Contact get(int contactId);
public List<Contact> list();
}
ContactDAOImpl:
package net.codejava.spring.dao;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.List;
import javax.sql.DataSource;
import net.codejava.spring.model.Contact;
import org.springframework.dao.DataAccessException;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.ResultSetExtractor;
import org.springframework.jdbc.core.RowMapper;
/**
* An implementation of the ContactDAO interface.
* #author www.codejava.net
*
*/
public class ContactDAOImpl implements ContactDAO {
private JdbcTemplate jdbcTemplate;
public ContactDAOImpl(DataSource dataSource) {
jdbcTemplate = new JdbcTemplate(dataSource);
}
#Override
public void saveOrUpdate(Contact contact) {
if (contact.getId() > 0) {
// update
String sql = "UPDATE contact SET name=?, email=?, address=?, "
+ "telephone=? WHERE contact_id=?";
jdbcTemplate.update(sql, contact.getName(), contact.getEmail(),
contact.getAddress(), contact.getTelephone(), contact.getId());
} else {
// insert
String sql = "INSERT INTO contact (name, email, address, telephone)"
+ " VALUES (?, ?, ?, ?)";
jdbcTemplate.update(sql, contact.getName(), contact.getEmail(),
contact.getAddress(), contact.getTelephone());
}
}
#Override
public void delete(int contactId) {
String sql = "DELETE FROM contact WHERE contact_id=?";
jdbcTemplate.update(sql, contactId);
}
#Override
public List<Contact> list() {
String sql = "SELECT * FROM contact";
List<Contact> listContact = jdbcTemplate.query(sql, new RowMapper<Contact>() {
#Override
public Contact mapRow(ResultSet rs, int rowNum) throws SQLException {
Contact aContact = new Contact();
aContact.setId(rs.getInt("contact_id"));
aContact.setName(rs.getString("name"));
aContact.setEmail(rs.getString("email"));
aContact.setAddress(rs.getString("address"));
aContact.setTelephone(rs.getString("telephone"));
return aContact;
}
});
return listContact;
}
#Override
public Contact get(int contactId) {
String sql = "SELECT * FROM contact WHERE contact_id=" + contactId;
return jdbcTemplate.query(sql, new ResultSetExtractor<Contact>() {
#Override
public Contact extractData(ResultSet rs) throws SQLException,
DataAccessException {
if (rs.next()) {
Contact contact = new Contact();
contact.setId(rs.getInt("contact_id"));
contact.setName(rs.getString("name"));
contact.setEmail(rs.getString("email"));
contact.setAddress(rs.getString("address"));
contact.setTelephone(rs.getString("telephone"));
return contact;
}
return null;
}
});
}
}
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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>net.codejava.spring</groupId>
<artifactId>SpringMvcJdbcTemplate</artifactId>
<version>1.0</version>
<packaging>war</packaging>
<name>SpringMvcJdbcTemplate</name>
<url>http://maven.apache.org</url>
<properties>
<java.version>1.8</java.version>
<spring.version>4.0.3.RELEASE</spring.version>
<cglib.version>2.2.2</cglib.version>
</properties>
<dependencies>
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<version>9.3-1102-jdbc41</version>
</dependency>
<!-- Spring core & mvc -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${spring.version}</version>
<type>jar</type>
<scope>compile</scope>
</dependency>
<!-- CGLib for #Configuration -->
<dependency>
<groupId>cglib</groupId>
<artifactId>cglib-nodep</artifactId>
<version>${cglib.version}</version>
<scope>runtime</scope>
</dependency>
<!-- Servlet Spec -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>javax.servlet.jsp-api</artifactId>
<version>2.3.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
</dependencies>
<build>
<finalName>SpringMvcJdbcTemplate</finalName>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.0.2</version>
<configuration>
<source>${java.version}</source>
<target>${java.version}</target>
</configuration>
</plugin>
</plugins>
</build>
</project>

I have fixed the same error in intellij idea by switching from jdk-16 to jdk-13 in my pom.xml and in my project sdk (File --> project structure --> project --> jdk-13).
Further more i was using servlet api instead of web.xml

Try to update your project, to download all libraries and then you will see the absolute path for postgresql Driver.