hibernate 配置文件
<!--<mapping resource="com/entity/Student.hbm.xml" />-->
<mapping class="com.entity.Student" />entity
package com.entity;import javax.persistence.*;
@Entitypublic class Student {
private int id;
private String name;
private int age;
@Id @GeneratedValue(strategy=GenerationType.IDENTITY) public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}}test类 SessionFactory c = new AnnotationConfiguration().configure().buildSessionFactory();
Session session=c.openSession();
Transaction ts = null;
ts=session.beginTransaction();
Student s = new Student();
s.setName("tom4");
s.setAge(2222);
session.save(s);
ts.commit();
session.close();报错Hibernate: insert into Student (age, name) values (?, ?)
Exception in thread "main" org.hibernate.exception.SQLGrammarException: could not insert: [com.entity.Student]
at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:67)
at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43)
at org.hibernate.id.insert.AbstractReturningDelegate.performInsert(AbstractReturningDelegate.java:40)
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2158)
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2638)
at org.hibernate.action.EntityIdentityInsertAction.execute(EntityIdentityInsertAction.java:48)
at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:250)
at org.hibernate.event.def.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:298)
at org.hibernate.event.def.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:181)
at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:107)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:187)
at org.hibernate.event.def.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:33)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:172)
at org.hibernate.event.def.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:27)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:70)
at org.hibernate.impl.SessionImpl.fireSave(SessionImpl.java:535)
at org.hibernate.impl.SessionImpl.save(SessionImpl.java:523)
at org.hibernate.impl.SessionImpl.save(SessionImpl.java:519)
at com.test.HibernateTest1.main(HibernateTest1.java:38)
Caused by: com.microsoft.sqlserver.jdbc.SQLServerException: 对象名 'Student' 无效。
at com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDatabaseError(Unknown Source)
at com.microsoft.sqlserver.jdbc.IOBuffer.processPackets(Unknown Source)
at com.microsoft.sqlserver.jdbc.SQLServerStatement.sendExecute(Unknown Source)
at com.microsoft.sqlserver.jdbc.SQLServerStatement.doExecuteUpdate(Unknown Source)
at com.microsoft.sqlserver.jdbc.SQLServerPreparedStatement.executeUpdate(Unknown Source)
at org.hibernate.id.IdentityGenerator$GetGeneratedKeysDelegate.executeAndExtract(IdentityGenerator.java:73)
at org.hibernate.id.insert.AbstractReturningDelegate.performInsert(AbstractReturningDelegate.java:33)
... 16 more想知道是为什么 如果改成xml形式的话 可以插入无错误 但是换注解就错了 谢谢知道的朋友说下 麻烦拉
<!--<mapping resource="com/entity/Student.hbm.xml" />-->
<mapping class="com.entity.Student" />entity
package com.entity;import javax.persistence.*;
@Entitypublic class Student {
private int id;
private String name;
private int age;
@Id @GeneratedValue(strategy=GenerationType.IDENTITY) public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}}test类 SessionFactory c = new AnnotationConfiguration().configure().buildSessionFactory();
Session session=c.openSession();
Transaction ts = null;
ts=session.beginTransaction();
Student s = new Student();
s.setName("tom4");
s.setAge(2222);
session.save(s);
ts.commit();
session.close();报错Hibernate: insert into Student (age, name) values (?, ?)
Exception in thread "main" org.hibernate.exception.SQLGrammarException: could not insert: [com.entity.Student]
at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:67)
at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43)
at org.hibernate.id.insert.AbstractReturningDelegate.performInsert(AbstractReturningDelegate.java:40)
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2158)
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2638)
at org.hibernate.action.EntityIdentityInsertAction.execute(EntityIdentityInsertAction.java:48)
at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:250)
at org.hibernate.event.def.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:298)
at org.hibernate.event.def.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:181)
at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:107)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:187)
at org.hibernate.event.def.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:33)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:172)
at org.hibernate.event.def.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:27)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:70)
at org.hibernate.impl.SessionImpl.fireSave(SessionImpl.java:535)
at org.hibernate.impl.SessionImpl.save(SessionImpl.java:523)
at org.hibernate.impl.SessionImpl.save(SessionImpl.java:519)
at com.test.HibernateTest1.main(HibernateTest1.java:38)
Caused by: com.microsoft.sqlserver.jdbc.SQLServerException: 对象名 'Student' 无效。
at com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDatabaseError(Unknown Source)
at com.microsoft.sqlserver.jdbc.IOBuffer.processPackets(Unknown Source)
at com.microsoft.sqlserver.jdbc.SQLServerStatement.sendExecute(Unknown Source)
at com.microsoft.sqlserver.jdbc.SQLServerStatement.doExecuteUpdate(Unknown Source)
at com.microsoft.sqlserver.jdbc.SQLServerPreparedStatement.executeUpdate(Unknown Source)
at org.hibernate.id.IdentityGenerator$GetGeneratedKeysDelegate.executeAndExtract(IdentityGenerator.java:73)
at org.hibernate.id.insert.AbstractReturningDelegate.performInsert(AbstractReturningDelegate.java:33)
... 16 more想知道是为什么 如果改成xml形式的话 可以插入无错误 但是换注解就错了 谢谢知道的朋友说下 麻烦拉
最好给个注释:@Table(name = "Student")
还有把xml文件删除掉;
也把student.hbm.xml删除了
还是原来的错误
不过我刚才也加了@Column 也是一样的错误
是不是少了什么jar包?
MS SQL Server 是否支持“@GeneratedValue(strategy=GenerationType.IDENTITY)”这个标签;
<property name="configurationClass">org.hibernate.cfg.AnnotationConfiguration</property>