Почему Hibernate пытается создать сущность с нулевым id?

Question

[parkito]

Здравствуйте. Помогите, пожалуйста, решить проблему.
Написал приложение для регистрации котрактов (hibernate+jsp). Теперь все это перевожу на spring. Вроде чтение из базы работает нормально. Но вот если хочу создать какую-либо сущность, вылетают эксепшены. По логам вижу, что hibernate пытается создать сущность с id = 0. Из-за этого, я думаю, все падает. Почему при спринге такое происходит - не понятно. Без него все работало.

Contract{contractId=0, ......

Сущность

@Entity
@Table(name = "Contract")
@NamedQuery(name = "Contract.getAll", query = "SELECT c FROM Contract c")
public class Contract {
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    @Column(name = "contract_id")
    private int contractId;
    @Basic
    @Column(name = "number")
    private String number;

DAO

@Override
    public void create(E entity) throws CustomDAOException {
        try {
            entityManager.persist(entity);
        } catch (PersistenceException e) {
            throw new CustomDAOException("Entity wasn't created: " + entity, e);
        }
    }

Что я делаю не так?

UPD
mySQL 5.7.15

<property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect"/>

org.springframework.web.util.NestedServletException: Request processing failed; nested exception is operator.exceptions.CustomDAOException: Entity wasn't created: User{userId=0, name='name', secondName='second', birthdayData='08.02.1992', passport='pass', adress='msk', balance=0.0, email='mail.com', accessLevel=null}
Caused by: operator.exceptions.CustomDAOException: Entity wasn't created: User{userId=0, name='name', secondName='second', birthdayData='08.02.1992', passport='pass', adress='msk', balance=0.0, email='mail.com', accessLevel=null}
	at operator.dao.implementation.GenericDAOImpl.create(GenericDAOImpl.java:47)
	at operator.services.implementation.UserServiceImpl.createEntity(UserServiceImpl.java:36)
	at operator.services.implementation.UserServiceImpl.createEntity(UserServiceImpl.java:21)
	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.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:333)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
	at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99)
	at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:281)
	at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:213)
	at com.sun.proxy.$Proxy71.createEntity(Unknown Source)
	at operator.controllers.AdminController.check(AdminController.java:59)
	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.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221)
	at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:136)
	at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:114)
	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827)
	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738)
	at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:963)
	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:897)
	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
	... 80 more
Caused by: javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: error performing isolated work
	at org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1692)
	at org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1602)
	at org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1608)
	at org.hibernate.jpa.spi.AbstractEntityManagerImpl.persist(AbstractEntityManagerImpl.java:1152)
	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.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:298)
	at com.sun.proxy.$Proxy66.persist(Unknown Source)
	at operator.dao.implementation.GenericDAOImpl.create(GenericDAOImpl.java:45)
	... 109 more
Caused by: org.hibernate.exception.SQLGrammarException: error performing isolated work
	at org.hibernate.exception.internal.SQLExceptionTypeDelegate.convert(SQLExceptionTypeDelegate.java:63)
	at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:42)
	at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:109)
	at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:95)
	at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcIsolationDelegate.delegateWork(JdbcIsolationDelegate.java:78)
	at org.hibernate.id.enhanced.TableStructure$1.getNextValue(TableStructure.java:125)
	at org.hibernate.id.enhanced.NoopOptimizer.generate(NoopOptimizer.java:40)
	at org.hibernate.id.enhanced.SequenceStyleGenerator.generate(SequenceStyleGenerator.java:412)
	at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:101)
	at org.hibernate.jpa.event.internal.core.JpaPersistEventListener.saveWithGeneratedId(JpaPersistEventListener.java:67)
	at org.hibernate.event.internal.DefaultPersistEventListener.entityIsTransient(DefaultPersistEventListener.java:189)
	at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:132)
	at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:58)
	at org.hibernate.internal.SessionImpl.firePersist(SessionImpl.java:775)
	at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:748)
	at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:753)
	at org.hibernate.jpa.spi.AbstractEntityManagerImpl.persist(AbstractEntityManagerImpl.java:1146)
	... 116 more
Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'operator.hibernate_sequence' 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:404)
	at com.mysql.jdbc.Util.getInstance(Util.java:387)
	at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:942)
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3966)
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3902)
	at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2526)
	at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2673)
	at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2549)
	at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1861)
	at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:1962)
	at org.apache.commons.dbcp2.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:83)
	at org.apache.commons.dbcp2.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:83)
	at org.hibernate.id.enhanced.TableStructure.executeQuery(TableStructure.java:224)
	at org.hibernate.id.enhanced.TableStructure.access$300(TableStructure.java:46)
	at org.hibernate.id.enhanced.TableStructure$1$1.execute(TableStructure.java:139)
	at org.hibernate.id.enhanced.TableStructure$1$1.execute(TableStructure.java:126)
	at org.hibernate.jdbc.WorkExecutor.executeReturningWork(WorkExecutor.java:55)
	at org.hibernate.jdbc.AbstractReturningWork.accept(AbstractReturningWork.java:34)
	at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcIsolationDelegate.delegateWork(JdbcIsolationDelegate.java:56)
	... 128 more

Comments

[Иннокентий Огоюкин]

У вас какая БД, и что стоит в org.hibernate.dialect? А вообще можно часть логов

[parkito]

Посмотрите, пожалуйста, upd

Answer 1

[sirs]

Если у Вас mysql, то я бы порекомендовал сделать так:

@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(name = "contract_id")
    private int contractId;

т.е. поменять strategy на IDENTITY.

И в таблице 'Contract' в базе добавить AUTO_INCREMENT PRIMARY KEY, чтобы mysql сам генерил ключи.

Comments

[parkito]

Огромное ВАМ человеческое спасибо! Я уже отчаялся. С переходом на спринг словил много неочевидных ошибок!