这是一个hibernate 联合主键的例子

package com.bird.entity;

import java.io.Serializable;

import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.IdClass;
import javax.persistence.Table;
/*
* 这是一个hibernate 联合主键的例子
*/

@Entity
@Table(name = "jc_chnl_group_contri")
@IdClass(value = JcChnlGroupContri.class)
public class JcChnlGroupContri implements Serializable {

    private static final long serialVersionUID = 1L;
    private int channel_id;
    private int group_id;
    @Id
    public int getChannel_id() {
        return channel_id;
    }
    public void setChannel_id(int channel_id) {
        this.channel_id = channel_id;
    }
    @Id
    public int getGroup_id() {
        return group_id;
    }
    public void setGroup_id(int group_id) {
        this.group_id = group_id;
    }

}