package com.entity;



import javax.persistence.Entity;

import javax.persistence.GeneratedValue;

import javax.persistence.GenerationType;

import javax.persistence.Id;





/*

 * 使用注解创建并关联数据库中的表，需要在hibernate配置文件中设置映射

 */



@Entity

public class Weapon {

	private long id;

	private String name;

	

	@Id

	@GeneratedValue(strategy=GenerationType.SEQUENCE)

	//@SequenceGenerator(name="weapon_seq")

	public long getId() {

		return id;

	}

	public void setId(long id) {

		this.id = id;

	}

	public String getName() {

		return name;

	}

	public void setName(String name) {

		this.name = name;

	}

}

<mapping class="com.entity.Weapon"/>

package com.test;



import org.hibernate.Session;

import org.hibernate.SessionFactory;

import org.hibernate.Transaction;

import org.hibernate.cfg.AnnotationConfiguration;



import com.entity.Weapon;



/*

 * 通过在hibernate文件中注册实体bean，并在实体bean中添加

 * hibernate注解，可以自动创建数据库中的关联表并将属性与字段关联

 */

public class TestAnnotations {

	private static AnnotationConfiguration ac = new AnnotationConfiguration().configure();

	

	private static SessionFactory sf = null;

	

	public static void main(String[] args) {

		sf = ac.buildSessionFactory();

		Session session = sf.openSession();

		Transaction tran = session.beginTransaction();

		Weapon weapon = new Weapon();

		weapon.setName("jack");

		weapon.setId(1);

		session.save(weapon);

		tran.commit();

		session.close();

	}

}

log4j:WARN No appenders could be found for logger (org.hibernate.cfg.annotations.Version).

log4j:WARN Please initialize the log4j system properly.

log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.

Hibernate: select hibernate_sequence.nextval from dual

Hibernate: insert into Weapon (name, id) values (?, ?)

Exception in thread "main" org.hibernate.exception.SQLGrammarException: Could not execute JDBC batch update

	at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:90)

	at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66)

	at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:275)

	at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:266)

	at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:167)

	at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:321)

	at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:50)

	at org.hiber