Hibernate两表查询

一.两个表:
person
1 id
2 name(人名)
3 roomid

room
1 roomid
2 room(房间号)

说明:一个room有多个person,通过roomid取出name和room封装到list

二.两个类:
person类

private int id;
private String name;
private int roomid;

public Person()
{

}

public Person(int id,String name,int roomid)
{
     this.id=id;
     this.name=name;
     this.roomid=roomid;
}

public int getId()
{
     return this.id;
}

public void setId(int id)
{
     this.id = id;
}

public String getName()
{
     return this.name;
}

public void setName(String name)
{
     this.name = name;
}

public int getRoomid()
{
     return roomid;
}

public void setRoomid(int roomid)
{
     this.roomid = roomid;
}


room类

private int roomid;
private String room;

public Room()
{

}

public Room(int roomid,String room)
{
this.roomid=roomid;
this.room = room;
}

public String getRoom()
{
return this.room;
}

public void setRoom(String room)
{
this.room = room;
}

public int getRoomid()
{
return roomid;
}

public void setRoomid(int roomid)
{
this.roomid = roomid;
}



三.Person.hbm.xml和Room.hbm.xml正常配置,此处就不写了.



四.Hibernate语句

String queryString="select p.name , r.room from Person p , Room r
where p.roomId = r.roomId";

return getHibernateTemplate().find(queryString);

此处返回一个list

五.获取list的值

设返回值是list
写一个JavaBean:
NrUtil
private String name;
private String room;

List<NrUtil> nrUtilList;

取list中的数据放入JavaBean中

Iterator it=list.iterator();
while(it.hasNext())
{
     Object[] ob=(Object[])it.next();
     String name=(String)ob[0];
     String room=(String)ob[1];
     NrUtil nr=new NrUtil(name,room);
     nrUtilList.add(nr);
}

六.在JSP页面显示
利用<s:iterator>显示


本人为JavaWeb初学者,有不对的地方请大家批评,指出,我会听取大家的意见，不断完善，谢谢！