Hibernate使用Map实现多对多映射

create   table  team2(id  varchar ( 50 )  primary   key ,name  varchar ( 50 ));
create   table  member2(id  varchar ( 50 )  primary   key ,name  varchar ( 50 ),age  varchar ( 50 ));
create   table  memberAtTeams2(member  varchar ( 50 ),team  varchar ( 50 ),teamRoles  varchar ( 50 ));

package  mapmanytomany;

import  java.util.HashMap;
import  java.util.Map;

public   class  Team  ... {
    private  String id;
    private  String name;
    private  Map members = new  HashMap();
public  String getId()  ... {
     return  id;
}
public   void  setId(String id)  ... {
     this .id  =  id;
}


public  Map getMembers()  ... {
     return  members;
}
public   void  setMembers(Map members)  ... {
     this .members  =  members;
}
public  String getName()  ... {
     return  name;
}
public   void  setName(String name)  ... {
     this .name  =  name;
}
}


package  mapmanytomany;

import  java.util.HashMap;
import  java.util.Map;
import  java.util.Set;

public   class  Member  ... {
    private  String id;
    private  String name;
    private  String teamRole;
    private  Map team = new  HashMap();
    private  String age;
public  String getAge()  ... {
     return  age;
}
public   void  setAge(String age)  ... {
     this .age  =  age;
}

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


public  String getTeamRole()  ... {
     return  teamRole;
}
public   void  setTeamRole(String teamRole)  ... {
     this .teamRole  =  teamRole;
}
public  String getId()  ... {
     return  id;
}
public   void  setId(String id)  ... {
     this .id  =  id;
}
public  Map getTeam()  ... {
     return  team;
}
public   void  setTeam(Map team)  ... {
     this .team  =  team;
}



}

<? xml version="1.0" encoding="utf-8" ?>
<! DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd" >
<!--  
    Mapping file autogenerated by MyEclipse - Hibernate Tools
-->
< hibernate-mapping  package ="mapmanytomany" >
     < class  name ="Team"  table ="team2" >
        < id  name ="id"  column ="id" >
          < generator  class ="uuid.hex" ></ generator >
        </ id >
        < property  name ="name"  column ="name" />
        < map  name ="members"  table ="memberAtTeams2"  cascade ="save-update" >
           < key  column ="team" />
           < index  type ="string"  column ="teamRoles" />
           < many-to-many  class ="Member"  column ="member" ></ many-to-many >
        </ map >
     </ class >
</ hibernate-mapping >


<? xml version="1.0" encoding="utf-8" ?>
<! DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd" >
<!--  
    Mapping file autogenerated by MyEclipse - Hibernate Tools
-->
< hibernate-mapping  package ="mapmanytomany" >
   
    
       < class  name ="Member"  table ="member2" >
        < id  name ="id"  column ="id" >
          < generator  class ="uuid.hex" ></ generator >
        </ id >
        < property  name ="name"  column ="name" />
        < property  name ="age"  column ="age" />
        < map  name ="team"  table ="memberAtTeams2"  inverse ="true" >
           < key  column ="member" />
           < index  type ="string"  column ="teamRoles" ></ index >
           < many-to-many  class ="Team"  column ="team" ></ many-to-many >
        </ map >
     </ class >
</ hibernate-mapping >

     public   static   void  main(String[] args)  ... {
        Configuration cfg = new  Configuration();
        cfg.configure();
        SessionFactory sf = cfg.buildSessionFactory();
        Session session = sf.openSession();
        Transaction t = session.beginTransaction();

        Team team1 = new  Team();
        team1.setName( " 足球队-01 " );
        Team team2 = new  Team();
        team2.setName( " 足球队-02 " );
        
        Member m1 = new  Member();
        m1.setName( " 张三 " );
        m1.setAge( " 11 " );
        m1.getTeam().put( " 主力守门员 " , team1);
        m1.getTeam().put( " 候选守门员 " , team2);
        
        Member m2 = new  Member();
        m2.setName( " 张四 " );
        m2.setAge( " 22 " );
        m2.getTeam().put( " 主力中后卫 " , team1);
        m2.getTeam().put( " 候选中后卫 " , team2);
        
        team1.getMembers().put( " 主力守门员 " , m1);
        team1.getMembers().put( " 主力中后卫 " , m2);
        team2.getMembers().put( " 候选守门员 " , m1);
        team2.getMembers().put( " 候选中后卫 " , m2);

            session.save(team1);
            session.save(team2);
        t.commit();
        System.out.println( " success