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I am trying to connect to a database that I created with java using hibernate. I am getting this error and I am not sure why

I am trying to connect to a database that I created with java in eclipse using hibernate. It is supposed to connect to the payroll database and insert records into the student table but I am getting this error! I inserted the jdbc connect and the other required jar files. I am not sure why it's not working. Please help.
Error:
Jul 14, 2022 2:34:10 PM org.hibernate.Version logVersion
INFO: HHH000412: Hibernate ORM core version 5.5.3.Final
Jul 14, 2022 2:34:11 PM org.hibernate.annotations.common.reflection.java.JavaReflectionManager <clinit>
INFO: HCANN000001: Hibernate Commons Annotations {5.1.2.Final}
Jul 14, 2022 2:34:11 PM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure
WARN: HHH10001002: Using Hibernate built-in connection pool (not for production use!)
Loading class `com.mysql.jdbc.Driver'. This is deprecated. The new driver class is `com.mysql.cj.jdbc.Driver'. The driver is automatically registered via the SPI and manual loading of the driver class is generally unnecessary.
Jul 14, 2022 2:34:11 PM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator
INFO: HHH10001005: using driver [com.mysql.jdbc.Driver] at URL [jdbc:mysql://localhost/payroll]
Jul 14, 2022 2:34:11 PM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator
INFO: HHH10001001: Connection properties: {user=root, password=****}
Jul 14, 2022 2:34:11 PM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator
INFO: HHH10001003: Autocommit mode: false
Jul 14, 2022 2:34:11 PM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl$PooledConnections <init>
INFO: HHH000115: Hibernate connection pool size: 3 (min=1)
Jul 14, 2022 2:34:11 PM org.hibernate.dialect.Dialect <init>
INFO: HHH000400: Using dialect: org.hibernate.dialect.MySQL8Dialect
Jul 14, 2022 2:34:11 PM org.hibernate.resource.transaction.backend.jdbc.internal.DdlTransactionIsolatorNonJtaImpl getIsolatedConnection
INFO: HHH10001501: Connection obtained from JdbcConnectionAccess [org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator$ConnectionProviderJdbcConnectionAccess#304b9f1a] for (non-JTA) DDL execution was not in auto-commit mode; the Connection 'local transaction' will be committed and the Connection will be set into auto-commit mode.
Hibernate:
select
student0_.id as id1_0_,
student0_.email as email2_0_,
student0_.first_name as first_na3_0_,
student0_.last_name as last_nam4_0_
from
student student0_
Hibernate:
select
student0_.id as id1_0_0_,
student0_.email as email2_0_0_,
student0_.first_name as first_na3_0_0_,
student0_.last_name as last_nam4_0_0_
from
student student0_
where
student0_.id=?
Exception in thread "main" java.lang.IllegalStateException: org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl#5eb97ced is closed
at org.hibernate.resource.jdbc.internal.AbstractLogicalConnectionImplementor.errorIfClosed(AbstractLogicalConnectionImplementor.java:37)
at org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl.getPhysicalConnection(LogicalConnectionManagedImpl.java:137)
at org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl.getConnectionForTransactionManagement(LogicalConnectionManagedImpl.java:276)
at org.hibernate.resource.jdbc.internal.AbstractLogicalConnectionImplementor.rollback(AbstractLogicalConnectionImplementor.java:121)
at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl$TransactionDriverControlImpl.rollback(JdbcResourceLocalTransactionCoordinatorImpl.java:304)
at org.hibernate.engine.transaction.internal.TransactionImpl.rollback(TransactionImpl.java:142)
at models.Student.get(Student.java:131)
at Driver.main(Driver.java:24)
Driver Class(driver.java)
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.hibernate.*;
import org.hibernate.boot.Metadata;
import org.hibernate.boot.MetadataSources;
import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
import org.hibernate.cfg.Configuration;
import org.hibernate.service.ServiceRegistry;
import models.Student;
public class Driver {
public static void main(String[] args) {
// TODO Auto-generated method stub
Student stu =new Student();//1,"Simone","Charles","#Home");
//stu.create();
List<Student> students=stu.readAll();
for(Student s: students) {
System.out.println(s.getFirstName());
}
Student s1=stu.get(4);
System.out.println(s1.getFirstName());
//sstu.delete(2);
//getCurrentSessionFromConfig();
}
public static Session getCurrentSessionFromConfig() {
// SessionFactory in Hibernate 5 example
Configuration config = new Configuration();
config.configure();
// local SessionFactory bean created
SessionFactory sessionFactory = config.buildSessionFactory();
Session session = sessionFactory.getCurrentSession();
return session;
}
public static Session getCurrentSessionX() {
// Hibernate 5.4 SessionFactory example without XML
Map<String, String> settings = new HashMap<>();
settings.put("connection.driver_class", "com.mysql.jdbc.Driver");
settings.put("dialect", "org.hibernate.dialect.MySQL8Dialect");
settings.put("hibernate.connection.url",
"jdbc:mysql://localhost/hibernate_examples");
settings.put("hibernate.connection.username", "root");
settings.put("hibernate.connection.password", "");
settings.put("hibernate.current_session_context_class", "thread");
settings.put("hibernate.show_sql", "true");
settings.put("hibernate.format_sql", "true");
ServiceRegistry serviceRegistry = new StandardServiceRegistryBuilder()
.applySettings(settings).build();
MetadataSources metadataSources = new MetadataSources(serviceRegistry);
// metadataSources.addAnnotatedClass(Player.class);
Metadata metadata = metadataSources.buildMetadata();
// here we build the SessionFactory (Hibernate 5.4)
SessionFactory sessionFactory = metadata.getSessionFactoryBuilder().build();
Session session = sessionFactory.getCurrentSession();
return session;
}
}
Hibernate xml file
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<!-- Version 8 MySQL hiberante-cfg.xml example for Hibernate 5 -->
<hibernate-configuration>
<session-factory>
<property name="connection.driver_class">com.mysql.jdbc.Driver</property>
<!-- property name="connection.driver_class">com.mysql.jdbc.Driver</property -->
<property name="connection.url">jdbc:mysql://localhost/payroll</property>
<property name="dialect">org.hibernate.dialect.MySQL8Dialect</property>
<property name="connection.username">root</property>
<property name="connection.password"></property>
<property name="connection.pool_size">3</property>
<!--property name="dialect">org.hibernate.dialect.MySQLDialect</property-->
<property name="current_session_context_class">thread</property>
<property name="show_sql">true</property>
<property name="format_sql">true</property>
<property name="hbm2ddl.auto">update</property>
<!-- mapping class="com.mcnz.jpa.examples.Player" / -->
<mapping class="models.Student" />
</session-factory>
</hibernate-configuration>
SessionBuilder File
package factories;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
import models.Student;
public class SessionFactoryBuilder {
private static SessionFactory sessionFactory = null;
public static SessionFactory getSessionFactory () {
if(sessionFactory==null) {
try {
Configuration cfg = new Configuration();
cfg.configure("hibernate.cfg.xml");
sessionFactory = cfg.buildSessionFactory();
// session =sessionFactory.openSession();
/* sessionFactory =new
Configuration().configure("hibernate.cfg.xml").addAnnotatedClass
(Student.class).buildSessionFactory();
*/
}catch(RuntimeException e) {System.out.println(e.toString());}
}
return sessionFactory;
}
public static void closeSessionFactory () {
if(sessionFactory!=null) {
sessionFactory.close();
}
}
}
Student Class
package models;
import java.util.ArrayList;
import java.util.List;
import javax.persistence.*;
import org.hibernate.Session;
import org.hibernate.Transaction;
import factories.SessionFactoryBuilder;
#Entity
#Table(name="student")
public class Student {
#Id
#GeneratedValue(strategy=GenerationType.IDENTITY)
#Column(name="id")
int id;
#Column(name="first_name")
String firstName;
#Column(name="last_name")
String lastName;
#Column(name="email")
String email;
public Student() {
super();
// TODO Auto-generated constructor stub
}
public Student(int id, String firstName, String lastName, String email) {
super();
this.id = id;
this.firstName = firstName;
this.lastName = lastName;
this.email = email;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
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;
}
public void create() {
Session session =SessionFactoryBuilder.getSessionFactory().getCurrentSession();
Transaction transaction= session.beginTransaction();
//Student stu=(Student) session.get(Student.class, this.id);
//stu.setFirstName(firstName);
//stu.setLastName(lastName);
session.save(this);
transaction.commit();
session.close();
}
public List<Student> readAll(){
List<Student> studentList=new ArrayList<>();
Session session =SessionFactoryBuilder.getSessionFactory().getCurrentSession();
Transaction transaction= session.beginTransaction();
studentList=(List<Student>) session.createQuery("From Student").getResultList();
transaction.commit();
session.close();
return studentList;
}
public void delete(int id) {
Session session =SessionFactoryBuilder.getSessionFactory()
.getCurrentSession();
Transaction transaction= session.beginTransaction();
//Student stu=(Student) session.get(Student.class, this.id);
//session.delete(stu);
// Delete a persistent object
Student student = session.get(Student.class, id);
if (student != null) {
session.delete(student);
System.out.println("student deleted");
}
// Delete a transient object
/* Student student2 = new Student();
student2.setId(2);
session.delete(student2);
System.out.println("Student 2 is deleted");
*/
transaction.commit();
session.close();
}
public void update() {
Session session =SessionFactoryBuilder.getSessionFactory()
.getCurrentSession();
Transaction transaction= session.beginTransaction();
//Student stu=(Student) session.get(Student.class, this.id);
session.update(this);
transaction.commit();
session.close();
}
public Student get(int id) {
Student stu=null;
Transaction transaction=null;
try(Session session =SessionFactoryBuilder.getSessionFactory()
.getCurrentSession()){
transaction= session.beginTransaction();
stu=(Student) session.get(Student.class, id);
session.delete(stu);
transaction.commit();
}catch(Exception e) {
if(transaction!=null) {
transaction.rollback();
}
e.printStackTrace();
}
return stu;
}
}

using hibernate and jpa with springboot

I have a spring boot project. I put in my resource folder hibernate.cfg.xml file.
this is my hibernate.cfg.xml file:
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="hibernate.bytecode.use_reflection_optimizer">false</property>
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="hibernate.connection.password">***</property>
<property name="hibernate.connection.url">jdbc:mysql://localhost:3306/exportbatch?serverTimezone=UTC</property>
<property name="hibernate.connection.username">root</property>
<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
<property name="show_sql">true</property>
</session-factory>
I have a hibernateUtil class used to instantiate a hibernate session.
public class HibernateUtil
{
private static final SessionFactory sessionFactory = buildSessionFactory();
private static SessionFactory buildSessionFactory()
{
try
{
// Create the SessionFactory from hibernate.cfg.xml
// return new Configuration().configure().buildSessionFactory();
return new AnnotationConfiguration().configure().buildSessionFactory();
}
catch (Throwable ex)
{
// Make sure you log the exception, as it might be swallowed
System.err.println("Initial SessionFactory creation failed." + ex);
throw new ExceptionInInitializerError(ex);
}
}
public static SessionFactory getSessionFactory()
{
return sessionFactory;
}
public static void shutdown()
{
// Close caches and connection pools
getSessionFactory().close();
}
}
In my application controller I have an endpoint in which I am requesting my mysql database.
#RequestMapping("/getbuildinginfo/{buildingid}")
public void getbuildinginfo(String buildingid)
Session session = null;
session = HibernateUtil.getSessionFactory().openSession();
session.beginTransaction();
String query = "select * from exportbatch.exportbatch";
SQLQuery sqlQuery = session.createSQLQuery(query);
List<Object[]> rows = sqlQuery.list();
HibernateUtil.shutdown();
This works fine the first time I run the project, but if I call the endpoint a second time, I am getting this exception:
org.hibernate.service.UnknownServiceException: Unknown service requested [org.hibernate.engine.jdbc.connections.spi.ConnectionProvider]
Could someone help me with this ? why it works the first time? Is it a spring boot context problem? if yes how could I resolve it ?

Why does hibernate drops foreing key constraint before creating tables?

Here is my simple hibernate.cfg.xml file:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<!-- Database connection settings -->
<property name="connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="connection.url">jdbc:mysql://localhost/UserDB</property>
<property name="connection.username">root</property>
<property name="connection.password"></property>
<!-- JDBC connection pool (use the built-in) -->
<property name="connection.pool_size">1</property>
<!-- SQL dialect -->
<property name="dialect">org.hibernate.dialect.MySQL5Dialect</property>
<!-- Enable Hibernate's automatic session context management -->
<property name="current_session_context_class">thread</property>
<!-- Disable the second-level cache -->
<property name="cache.provider_class">org.hibernate.cache.NoCacheProvider</property>
<!-- Echo all executed SQL to stdout -->
<property name="show_sql">true</property>
<property name="format_sql">true</property>
<!-- Drop and re-create the database schema on startup -->
<property name="hbm2ddl.auto">create-drop</property>
<!-- Mapping files -->
<mapping class="com.stackoverflow.model.Person" />
<mapping class="com.stackoverflow.model.Phone" />
</session-factory>
Here is simple Person entity:
#Entity(name = "Person")
public class Person {
#Id
#GeneratedValue
private Long id;
public Person() {
}
}
Here is simple Phone entity:
#Entity(name = "Phone")
public class Phone {
#Id
#GeneratedValue
private Long id;
#Column(name = "`number`")
private String number;
#ManyToOne(cascade=CascadeType.ALL,optional=false)
#JoinColumn(name = "person_id",
foreignKey = #ForeignKey(name = "PERSON_ID_FK")
)
private Person person;
public Phone() {
}
public Phone(String number) {
this.number = number;
}
public Long getId() {
return id;
}
public String getNumber() {
return number;
}
public Person getPerson() {
return person;
}
public void setPerson(Person person) {
this.person = person;
}
}
Here is junit test class that tries to save this relationship into database:
public class TestManyToOne {
private static SessionFactory sessionFactory;
private Session session;
#BeforeClass
public static void setUp() throws Exception {
// A SessionFactory is set up once for an application!
final StandardServiceRegistry registry = new StandardServiceRegistryBuilder().configure("hibernate.cfg.xml")
.build();
try {
sessionFactory = new MetadataSources(registry).buildMetadata().buildSessionFactory();
} catch (Exception e) {
// The registry would be destroyed by the SessionFactory, but we had
// trouble building the SessionFactory
// so destroy it manually.
StandardServiceRegistryBuilder.destroy(registry);
System.out.println("Exception\n" + e);
}
assertNotNull(sessionFactory);
}
#AfterClass
public static void tearDown() throws Exception {
sessionFactory.close();
}
#Before
public void beforeEach() {
session = sessionFactory.getCurrentSession();
session.beginTransaction();
}
#After
public void afterEach() {
session.getTransaction().commit();
session.close();
}
#Test
public void testSave() {
Person person = new Person();
Phone phone1 = new Phone("93283287832");
Phone phone2 = new Phone("0987654321");
phone1.setPerson(person);
phone2.setPerson(person);
session.save(phone1);
session.save(phone2);
}
}
It has only one #Test method called testSave. When I run it on just created database I get error :
Hibernate:
alter table Phone
drop
foreign key PERSON_ID_FK
апр 11, 2017 5:50:54 PM org.hibernate.resource.transaction.backend.jdbc.internal.DdlTransactionIsolatorNonJtaImpl getIsolatedConnection
INFO: HHH10001501: Connection obtained from JdbcConnectionAccess [org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator$ConnectionProviderJdbcConnectionAccess#6f2cfcc2] for (non-JTA) DDL execution was not in auto-commit mode; the Connection 'local transaction' will be committed and the Connection will be set into auto-commit mode.
апр 11, 2017 5:50:54 PM org.hibernate.tool.schema.internal.ExceptionHandlerLoggedImpl handleException
WARN: GenerationTarget encountered exception accepting command : Error executing DDL via JDBC Statement
org.hibernate.tool.schema.spi.CommandAcceptanceException: Error executing DDL via JDBC Statement
at org.hibernate.tool.schema.internal.exec.GenerationTargetToDatabase.accept(GenerationTargetToDatabase.java:62)
at org.hibernate.tool.schema.internal.SchemaDropperImpl.applySqlString(SchemaDropperImpl.java:374)
at org.hibernate.tool.schema.internal.SchemaDropperImpl.applySqlStrings(SchemaDropperImpl.java:359)
at org.hibernate.tool.schema.internal.SchemaDropperImpl.applyConstraintDropping(SchemaDropperImpl.java:331)
at org.hibernate.tool.schema.internal.SchemaDropperImpl.dropFromMetadata(SchemaDropperImpl.java:230)
at org.hibernate.tool.schema.internal.SchemaDropperImpl.performDrop(SchemaDropperImpl.java:154)
at org.hibernate.tool.schema.internal.SchemaDropperImpl.doDrop(SchemaDropperImpl.java:126)
at org.hibernate.tool.schema.internal.SchemaDropperImpl.doDrop(SchemaDropperImpl.java:112)
at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.performDatabaseAction(SchemaManagementToolCoordinator.java:137)
at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.process(SchemaManagementToolCoordinator.java:65)
at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:307)
at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:490)
at org.hibernate.boot.internal.MetadataImpl.buildSessionFactory(MetadataImpl.java:170)
at com.stackoverflow.dao.TestDao.setUp(TestDao.java:37)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:283)
at org.apache.maven.surefire.junit4.JUnit4Provider.executeWithRerun(JUnit4Provider.java:173)
Hibernate:
drop table if exists hibernate_sequence
at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:153)
at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:128)
at org.apache.maven.surefire.booter.ForkedBooter.invokeProviderInSameClassLoader(ForkedBooter.java:203)
at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:155)
at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:103)
Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'userdb.phone' doesn't exist
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
at com.mysql.jdbc.Util.getInstance(Util.java:381)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1030)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3491)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3423)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1936)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2060)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2536)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2465)
at com.mysql.jdbc.StatementImpl.execute(StatementImpl.java:734)
at org.hibernate.tool.schema.internal.exec.GenerationTargetToDatabase.accept(GenerationTargetToDatabase.java:49)
... 30 more
In error this line is important:
Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'userdb.phone' doesn't exist
How to tell hibernate do not drop foreign key constraint before creating tables?
Thank you.

I didn't believe it but the problem was that connection pool size was set to 1. After I set it to ten
<property name="connection.pool_size">10</property>
junit test runs succesfully but the error didn't disappear. It is ignored by eclipse.

Hibernate not connecting with MySql

Stuck at this place I am new to hibernate and making a sample code after watching tutorial However I am stuck connecting hibernate with MySql.
Here is hibernate.cfg.xml placed in the source folder
<?xml version='1.0' encoding='utf-8'?>
<!-- ~ Hibernate, Relational Persistence for Idiomatic Java ~ ~ License:
GNU Lesser General Public License (LGPL), version 2.1 or later. ~ See the
lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>. -->
<hibernate-configuration
xmlns="http://www.hibernate.org/xsd/hibernate-configuration"
xsi:schemaLocation="http://www.hibernate.org/xsd/hibernate-configuration
hibernate-configuration-4.0.xsd"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<session-factory>
<!-- Database connection settings -->
<property name="connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="connection.url">jdbc:mysql://localhost:3306/test</property>
<property name="connection.username">root</property>
<property name="connection.password">root</property>
<!-- JDBC connection pool (use the built-in) -->
<property name="connection.pool_size">1</property>
<!-- SQL dialect -->
<property name="dialect">org.hibernate.dialect.MySQLDialect</property>
<!-- Enable Hibernate's automatic session context management -->
<property name="current_session_context_class">thread</property>
<!-- Disable the second-level cache -->
<property name="cache.provider_class">org.hibernate.cache.internal.NoCacheProvider
</property>
<property name="current_session_context_class">thread</property>
<!-- Echo all executed SQL to stdout -->
<property name="show_sql">true</property>
<!-- Drop and re-create the database schema on startup -->
<property name="hbm2ddl.auto">create</property>
<mapping class="com.javapapers.UserDetails" />
</session-factory>
</hibernate-configuration>
And here is my HibernateTest.java file
package com.javapapers;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
public class HibernateTest {
public static void main(String[] args) {
// TODO Auto-generated method stub
UserDetails user=new UserDetails();
user.setUserId(1);
user.setUserName("Mannu");
System.out.println("Here");
SessionFactory sessionFactory=new Configuration().configure().buildSessionFactory();
System.out.println("Not even printed");
Session session=sessionFactory.openSession();
session.beginTransaction();
session.save(user);
session.getTransaction().commit();
}
}
Here is UserDetails.java
package com.javapapers;
import javax.persistence.Entity;
import javax.persistence.Id;
#Entity
public class UserDetails {
#Id
private int userId;
private String userName;
public int getUserId() {
return userId;
}
public void setUserId(int userId) {
this.userId = userId;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
}
And Here is Error Report
Here
Nov 11, 2015 2:23:03 PM org.hibernate.Version logVersion
INFO: HHH000412: Hibernate Core {5.0.2.Final}
Nov 11, 2015 2:23:03 PM org.hibernate.cfg.Environment <clinit>
INFO: HHH000206: hibernate.properties not found
Nov 11, 2015 2:23:03 PM org.hibernate.cfg.Environment buildBytecodeProvider
INFO: HHH000021: Bytecode provider name : javassist
Exception in thread "main" org.hibernate.internal.util.config.ConfigurationException: Unable to perform unmarshalling at line number 10 and column 56 in RESOURCE hibernate.cfg.xml. Message: cvc-elt.1: Cannot find the declaration of element 'hibernate-configuration'.
at org.hibernate.boot.cfgxml.internal.JaxbCfgProcessor.unmarshal(JaxbCfgProcessor.java:133)
at org.hibernate.boot.cfgxml.internal.JaxbCfgProcessor.unmarshal(JaxbCfgProcessor.java:65)
at org.hibernate.boot.cfgxml.internal.ConfigLoader.loadConfigXmlResource(ConfigLoader.java:57)
at org.hibernate.boot.registry.StandardServiceRegistryBuilder.configure(StandardServiceRegistryBuilder.java:163)
at org.hibernate.cfg.Configuration.configure(Configuration.java:259)
at org.hibernate.cfg.Configuration.configure(Configuration.java:245)
at com.javapapers.HibernateTest.main(HibernateTest.java:15)
Caused by: javax.xml.bind.UnmarshalException
- with linked exception:
[org.xml.sax.SAXParseException; lineNumber: 10; columnNumber: 56; cvc-elt.1: Cannot find the declaration of element 'hibernate-configuration'.]
at com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallerImpl.handleStreamException(UnmarshallerImpl.java:420)
at com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal0(UnmarshallerImpl.java:401)
at com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal(UnmarshallerImpl.java:374)
at org.hibernate.boot.cfgxml.internal.JaxbCfgProcessor.unmarshal(JaxbCfgProcessor.java:126)
... 6 more
Caused by: org.xml.sax.SAXParseException; lineNumber: 10; columnNumber: 56; cvc-elt.1: Cannot find the declaration of element 'hibernate-configuration'.
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:198)
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.error(ErrorHandlerWrapper.java:134)
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:437)
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:368)
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:325)
at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.handleStartElement(XMLSchemaValidator.java:1906)
at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.startElement(XMLSchemaValidator.java:746)
at com.sun.org.apache.xerces.internal.jaxp.validation.ValidatorHandlerImpl.startElement(ValidatorHandlerImpl.java:570)
at com.sun.xml.internal.bind.v2.runtime.unmarshaller.ValidatingUnmarshaller.startElement(ValidatingUnmarshaller.java:86)
at com.sun.xml.internal.bind.v2.runtime.unmarshaller.InterningXmlVisitor.startElement(InterningXmlVisitor.java:60)
at com.sun.xml.internal.bind.v2.runtime.unmarshaller.StAXEventConnector.handleStartElement(StAXEventConnector.java:246)
at com.sun.xml.internal.bind.v2.runtime.unmarshaller.StAXEventConnector.bridge(StAXEventConnector.java:115)
at com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal0(UnmarshallerImpl.java:398)
... 8 more

Create SessionFactory like that. It worked at Hibernate 4.3.
Configuration configuration = new Configuration();
configuration.configure();
private static ServiceRegistry serviceRegistry = new ServiceRegistryBuilder().applySettings(configuration.getProperties()).buildServiceRegistry();
private static SessionFactory sessionFactory = configuration.buildSessionFactory(serviceRegistry);
And it's total violation of factory pattern to do that in main. Make separate class for it.

Hibernate: javax.naming.NoInitialContextException (using DAO generated by Hibernate)

I'm new to Hibernate. Using Hibernate 3.0 from Eclipse indigo.
The topic is discussed here and the answer is not helpful, Hibernate: javax.naming.NoInitialContextException (Component Mapping via Annotations)
i.e. I tried removing name from session-factory and still getting the error.
Am I missing something? Can anyone help with this?
The error is as follows:
Feb 6, 2013 3:59:05 PM PatternsHome getSessionFactory
SEVERE: Could not locate SessionFactory in JNDI
javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file: java.naming.factory.initial
at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:662)
at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:305)
at javax.naming.InitialContext.getURLOrDefaultInitCtx(InitialContext.java:342)
at javax.naming.InitialContext.lookup(InitialContext.java:409)
at PatternsHome.getSessionFactory(PatternsHome.java:26)
at PatternsHome.<init>(PatternsHome.java:21)
at OutputProcessing.saveData(OutputProcessing.java:47)
at OutputProcessing.FPFileOutputWriter(OutputProcessing.java:110)
at OrderPatternFileCreate.main(OrderPatternFileCreate.java:84)
Exception in thread "main" java.lang.IllegalStateException: Could not locate SessionFactory in JNDI
at PatternsHome.getSessionFactory(PatternsHome.java:29)
at PatternsHome.<init>(PatternsHome.java:21)
at OutputProcessing.saveData(OutputProcessing.java:47)
at OutputProcessing.FPFileOutputWriter(OutputProcessing.java:110)
at OrderPatternFileCreate.main(OrderPatternFileCreate.java:84)
Hibernate configuration file:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="hibernate.connection.password">root</property>
<property name="hibernate.connection.url">jdbc:mysql://localhost/test</property>
<property name="hibernate.connection.username">root</property>
<property name="hibernate.dialect">org.hibernate.dialect.MySQL5InnoDBDialect</property>
<property name="show sql">true</property>
<mapping resource="hibernate_db_mapping.hbm.xml"/>
</session-factory>
</hibernate-configuration>
The DAO file is generated by Hibernate and outline is given as:
public class PatternsHome {
private static final Log log = LogFactory.getLog(PatternsHome.class);
private final SessionFactory sessionFactory = getSessionFactory();
protected SessionFactory getSessionFactory() {
try {
return (SessionFactory) new InitialContext()
.lookup("SessionFactory");
} catch (Exception e) {
log.error("Could not locate SessionFactory in JNDI", e);
throw new IllegalStateException(
"Could not locate SessionFactory in JNDI");
}
}
.....
}

I'm not able to make this work on a stand alone. But I created a generic DAO with HibernateUtil and created sessionFactory using
sessionFactory = new Configuration().configure(new File("hibernate.cfg.xml")).buildSessionFactory();
and accessed DB in my DAO using
Session session = HibernateUtil.getSessionFactory().openSession();
Transaction transaction = null;
try{
transaction = session.beginTransaction();
session.save(myData);
transaction.commit();
System.out.println("Data is Saved");
}catch(Exception e){
e.printStackTrace();
}finally{
session.close();
}
This worked.