表结构:

类图:

CRUD:

User

package com.demo.model;import java.util.Set;/**用户信息* @author wobendiankun*2014-10-29 下午11:05:26*/
public class User {/***用户Id */private int userId;/*** username*/private String userName;/*** 密码*/private String password;private Student student ;private Set<Role> roles; public User() {}public User(int userId) {this.userId = userId;}public User(String userName, String password) {this.userName = userName;this.password = password;}public int getUserId() {return userId;}public void setUserId(int userId) {this.userId = userId;}public String getUserName() {return userName;}public void setUserName(String userName) {this.userName = userName;}public String getPassword() {return password;}public void setPassword(String password) {this.password = password;}public Student getStudent() {return student;}public void setStudent(Student student) {this.student = student;}public Set<Role> getRoles() {return roles;}public void setRoles(Set<Role> roles) {this.roles = roles;}}

Role

package com.demo.model;import java.util.Set;/**角色信息* @author wobendiankun*2014-11-2 下午08:29:54*/
public class Role {/*** 角色id*/private int roleId;/*** 角色名称*/private String roleName;private Set<User> users;public Role() {}public Role(int roleId) {this.roleId = roleId;}public Role(String roleName) {this.roleName = roleName;}public int getRoleId() {return roleId;}public void setRoleId(int roleId) {this.roleId = roleId;}public String getRoleName() {return roleName;}public void setRoleName(String roleName) {this.roleName = roleName;}public Set<User> getUsers() {return users;}public void setUsers(Set<User> users) {this.users = users;}}

配置:

User.hbm.xml

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC"-//Hibernate/Hibernate Mapping DTD 3.0//EN""http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"><hibernate-mapping ><class name="com.demo.model.User" table="t_user"><id name="userId" column="user_id"><generator class="sequence"><param name="sequence">SEQ_T_USER</param></generator></id><property name="userName" column="user_name" /><property name="password" /><many-to-one name="student" column="student_id" unique="true"></many-to-one><set name="roles" table="t_user_role" inverse="true"><key column="user_id"></key><many-to-many class="com.demo.model.Role" column="role_id"></many-to-many></set></class>
</hibernate-mapping>

Role.hbm.xml

<?xml version="1.0"?

> <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"> <hibernate-mapping > <class name="com.demo.model.Role" table="t_role"> <id name="roleId" column="role_id"> <generator class="sequence"> <param name="sequence">SEQ_T_ROLE</param> </generator> </id> <property name="roleName" column="role_name" /> <set name="users" table="t_user_role" lazy="extra"> <key column="role_id"></key> <many-to-many class="com.demo.model.User" column="user_id"></many-to-many> </set> </class> </hibernate-mapping>

add:

@Testpublic void addTest(){User user1=new User("赵三","111");User user2=new User("无四","111");Set<User> users=new HashSet<User>();users.add(user1);users.add(user2);Role role=new Role("財务部");Set<Role> roles=new HashSet<Role>();//设置双向关系role.setUsers(users);user1.setRoles(roles);user2.setRoles(roles);Session session = null;try {session = HibernateUtil.openSession();session.beginTransaction();session.save(role);session.save(user1);session.save(user2);session.getTransaction().commit();} catch (Exception e) {session.getTransaction().rollback();e.printStackTrace();} finally {HibernateUtil.closeSession(session);}}

发出sql:

Hibernate: insert into t_role (role_name, role_id) values (?

, ?

) Hibernate: insert into t_user (user_name, password, student_id, user_id) values (?, ?

, ?

, ?) Hibernate: insert into t_user (user_name, password, student_id, user_id) values (?, ?

, ?, ?) Hibernate: insert into t_user_role (role_id, user_id) values (?

, ?) Hibernate: insert into t_user_role (role_id, user_id) values (?, ?)

load;

@Testpublic void loadTest(){Session session = null;try {session = HibernateUtil.openSession();session.beginTransaction();Role role=(Role)session.load(Role.class,3);System.out.println("角色名称:"+role.getRoleName());System.out.println("users:"+role.getUsers());session.getTransaction().commit();} catch (Exception e) {session.getTransaction().rollback();e.printStackTrace();} finally {HibernateUtil.closeSession(session);}}

发出sql:

Hibernate: select role0_.role_id as role1_4_0_, role0_.role_name as role2_4_0_ from t_role role0_ where role0_.role_id=?
角色名称:財务部
Hibernate: select users0_.role_id as role2_4_1_, users0_.user_id as user1_1_, user1_.user_id as user1_2_0_, user1_.user_name as user2_2_0_, user1_.password as password2_0_, user1_.student_id as student4_2_0_ from t_user_role users0_ inner join t_user user1_ on users0_.user_id=user1_.user_id where users0_.role_id=?

users:[com.demo.model.User@1f31652, com.demo.model.User@3e96cf]