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& Apos:

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CRUD;

Student

package com.demo.model;import java.io.UnsupportedEncodingException;import java.util.Set;/**ѧÉúÐÅÏ¢ * @author wobendiankun *2014-10-19 ÏÂÎç08:54:29 */public class Student {private int studentId ;private String studentName ;private int age;private Set
  
    certificates ;private User user;public int getStudentId() {return studentId;}public void setStudentId(int studentId) {this.studentId = studentId;}public String getStudentName() {return studentName;}public void setStudentName(String studentName) {this.studentName = studentName;}public int getAge() {return age;}public void setAge(int age) {this.age = age;}@Overridepublic String toString() {String str="";if(studentName!=null){try {str=new String(studentName.getBytes("UTF-8"));} catch (UnsupportedEncodingException e) {e.printStackTrace();}}return "Student [studentId=" + studentId + ", studentName="+ str + ", age=" + age + "]";}public Set
   
     getCertificates() {return certificates;}public void setCertificates(Set
    
      certificates) {this.certificates = certificates;}public User getUser() {return user;}public void setUser(User user) {this.user = user;}}
    
   
  

Role

package com.demo.model;import java.util.Set;/**½ÇÉ«ÐÅÏ¢ * @author wobendiankun *2014-11-2 ÏÂÎç08:29:54 */public class Role {/** * ½ÇÉ«id */private int roleId;/** * ½ÇÉ«Ãû³Æ */private String roleName;public Role() {}public Role(int roleId) {this.roleId = roleId;}public Role(String roleName) {this.roleName = roleName;}private Set
  
    users;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
   
     getUsers() {return users;}public void setUsers(Set
    
      users) {this.users = users;}}
    
   
  

Å äögou:

Role. hbm. xml

  
  
   
    
     
      SEQ_T_ROLE
     
    
    
    
     
     
    
   
  

Set bandwidth limit Ø µätable limit:

Key keys shall vary according?

Inter-to-minus Inter-Domain inter: user quota µì Ó ³ éä± ít _ user Ú úöð ä ä± íµäø á᪠×ö¶ Î

Add:

@Testpublic void addTest() {User user1=new User("ÀîÈý","111");User user2=new User("ÀîËÄ","111");Set
  
    users=new HashSet
   
    ();users.add(user1);users.add(user2);Role role=new Role("¿ª·¢×é");role.setUsers(users);Session session = null;try {session = HibernateUtil.openSession();session.beginTransaction();session.save(user1);session.save(user2);session.save(role);session.getTransaction().commit();} catch (Exception e) {session.getTransaction().rollback();e.printStackTrace();} finally {HibernateUtil.closeSession(session);}}
   
  

· ¢ ³ Ösql:

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_role (role_name, role_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,2);System.out.println("½ÇÉ«Ãû³Æ"+role.getRoleName());System.out.println("users:"+role.getUsers());session.getTransaction().commit();} catch (Exception e) {session.getTransaction().rollback();e.printStackTrace();} finally {HibernateUtil.closeSession(session);}}

· ¢ ³ Ösql:

Hibernate: select role0_.role_id as role1_3_0_, role0_.role_name as role2_3_0_ from t_role role0_ where role0_.role_id=?½ÇÉ«Ãû³Æ¿ª·¢×éHibernate: select users0_.role_id as role1_3_1_, users0_.user_id as user2_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@b4be3d, com.demo.model.User@35bb0f]