学生 - 老师
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1 package com.zhangpn.entity; 2 3 import java.util.HashSet; 4 import java.util.Set; 5 6 public class Student { 7 private Long id; 8 private String name; 9 private Set<Teacher> teachers = new HashSet<>(); 10 11 public Long getId() { 12 return id; 13 } 14 15 public void setId(Long id) { 16 this.id = id; 17 } 18 19 public String getName() { 20 return name; 21 } 22 23 public void setName(String name) { 24 this.name = name; 25 } 26 27 public Set<Teacher> getTeachers() { 28 return teachers; 29 } 30 31 public void setTeachers(Set<Teacher> teachers) { 32 this.teachers = teachers; 33 } 34 35 public Student() { 36 } 37 38 public Student(String name, Set<Teacher> teachers) { 39 this.name = name; 40 this.teachers = teachers; 41 } 42 43 }
![](https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif)
1 package com.zhangpn.entity; 2 3 import java.util.HashSet; 4 import java.util.Set; 5 6 public class Teacher { 7 private Long id; 8 private String name; 9 private Set<Student> students = new HashSet<>(); 10 11 public Long getId() { 12 return id; 13 } 14 15 public void setId(Long id) { 16 this.id = id; 17 } 18 19 public String getName() { 20 return name; 21 } 22 23 public void setName(String name) { 24 this.name = name; 25 } 26 27 public Set<Student> getStudents() { 28 return students; 29 } 30 31 public void setStudents(Set<Student> students) { 32 this.students = students; 33 } 34 35 public Teacher() { 36 } 37 38 public Teacher(String name, Set<Student> students) { 39 this.name = name; 40 this.students = students; 41 } 42 43 }
学生配置 - 老师配置
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1 <?xml version="1.0"?> 2 <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" 3 "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"> 4 <hibernate-mapping> 5 <class name="com.zhangpn.entity.Student" table="STUDENT"> 6 <id name="id" type="java.lang.Long"> 7 <column name="ID" /> 8 <generator class="native" /> 9 </id> 10 <property name="name" type="java.lang.String"> 11 <column name="NAME" /> 12 </property> 13 <set name="teachers" table="STUDENT_TEACHER" inverse="false" lazy="true"> 14 <key> 15 <column name="STUDENTID" /> 16 </key> 17 <many-to-many class="com.zhangpn.entity.Teacher" column="TEACHERID"></many-to-many> 18 </set> 19 </class> 20 </hibernate-mapping>
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1 <?xml version="1.0"?> 2 <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" 3 "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"> 4 <hibernate-mapping> 5 <class name="com.zhangpn.entity.Teacher" table="TEACHER"> 6 <id name="id" type="java.lang.Long"> 7 <column name="ID" /> 8 <generator class="native" /> 9 </id> 10 <property name="name" type="java.lang.String"> 11 <column name="NAME" /> 12 </property> 13 <set name="students" table="STUDENT_TEACHER" inverse="false" lazy="true"> 14 <key> 15 <column name="TEACHERID" /> 16 </key> 17 <many-to-many class="com.zhangpn.entity.Student" column="STUDENTID"></many-to-many> 18 </set> 19 </class> 20 </hibernate-mapping>
中间表
学生 | |
id | name |
中间表 | |
stu_id | tea_id |
老师 | |
id | name |
学生表
主键:ID
教师表
主键:ID
中间表:
主键:STUDENTID、TEACHERID
外键:STUDENTID、TEACHERID
插入数据:
![](https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif)
1 package com.zhangpn.test; 2 3 import java.util.HashSet; 4 import java.util.Set; 5 6 import org.hibernate.Session; 7 import org.hibernate.SessionFactory; 8 import org.hibernate.boot.MetadataSources; 9 import org.hibernate.boot.registry.StandardServiceRegistry; 10 import org.hibernate.boot.registry.StandardServiceRegistryBuilder; 11 12 import com.zhangpn.entity.Student; 13 import com.zhangpn.entity.Teacher; 14 15 public class Test { 16 17 public static void main(String[] args) { 18 SessionFactory sessionFactory = null; 19 final StandardServiceRegistry registry = new StandardServiceRegistryBuilder().configure().build(); 20 try { 21 sessionFactory = new MetadataSources(registry).buildMetadata().buildSessionFactory(); 22 System.out.println("sessionFactory Normal Running..."); 23 } catch (Exception e) { 24 System.out.println("Problem : sessionFactory!!!"); 25 StandardServiceRegistryBuilder.destroy(registry); 26 } 27 Session session = sessionFactory.openSession(); 28 session.beginTransaction(); 29 // ------------------------------------------------------ 30 Student student1 = new Student(); 31 Student student2 = new Student(); 32 Student student3 = new Student(); 33 Student student4 = new Student(); 34 student1.setName("张同学"); 35 student2.setName("王同学"); 36 student3.setName("李同学"); 37 student4.setName("楚同学"); 38 39 Set<Student> students1 = new HashSet<>(); 40 students1.add(student1); 41 students1.add(student2); 42 Set<Student> students2 = new HashSet<>(); 43 students2.add(student3); 44 students2.add(student4); 45 Set<Student> students3 = new HashSet<>(); 46 students3.add(student1); 47 students3.add(student2); 48 students3.add(student4); 49 50 Teacher teacher1 = new Teacher("刘老师",students1); 51 Teacher teacher2 = new Teacher("姜老师",students2); 52 Teacher teacher3 = new Teacher("赵老师",students3); 53 54 session.save(student1); 55 session.save(student2); 56 session.save(student3); 57 session.save(student4); 58 59 session.save(teacher1); 60 session.save(teacher2); 61 session.save(teacher3); 62 63 // ------------------------------------------------------ 64 session.getTransaction().commit(); 65 session.close(); 66 sessionFactory.close(); 67 } 68 69 }
控制台输出结果:
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1 六月 12, 2018 1:30:12 下午 org.hibernate.Version logVersion 2 INFO: HHH000412: Hibernate Core {5.0.1.Final} 3 六月 12, 2018 1:30:12 下午 org.hibernate.cfg.Environment <clinit> 4 INFO: HHH000206: hibernate.properties not found 5 六月 12, 2018 1:30:12 下午 org.hibernate.cfg.Environment buildBytecodeProvider 6 INFO: HHH000021: Bytecode provider name : javassist 7 六月 12, 2018 1:30:12 下午 org.hibernate.annotations.common.reflection.java.JavaReflectionManager <clinit> 8 INFO: HCANN000001: Hibernate Commons Annotations {5.0.0.Final} 9 六月 12, 2018 1:30:12 下午 org.hibernate.boot.jaxb.internal.stax.LocalXmlResourceResolver resolveEntity 10 WARN: HHH90000012: Recognized obsolete hibernate namespace http://hibernate.sourceforge.net/hibernate-mapping. Use namespace http://www.hibernate.org/dtd/hibernate-mapping instead. Support for obsolete DTD/XSD namespaces may be removed at any time. 11 六月 12, 2018 1:30:13 下午 org.hibernate.boot.jaxb.internal.stax.LocalXmlResourceResolver resolveEntity 12 WARN: HHH90000012: Recognized obsolete hibernate namespace http://hibernate.sourceforge.net/hibernate-mapping. Use namespace http://www.hibernate.org/dtd/hibernate-mapping instead. Support for obsolete DTD/XSD namespaces may be removed at any time. 13 六月 12, 2018 1:30:13 下午 org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure 14 WARN: HHH000402: Using Hibernate built-in connection pool (not for production use!) 15 六月 12, 2018 1:30:13 下午 org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator 16 INFO: HHH000401: using driver [null] at URL [jdbc:mysql://localhost:3306/zhangpn?serverTimezone=GMT&useSSL=false] 17 六月 12, 2018 1:30:13 下午 org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator 18 INFO: HHH000046: Connection properties: {user=root, password=****, driver_class =com.mysql.cj.jdbc.Driver} 19 六月 12, 2018 1:30:13 下午 org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator 20 INFO: HHH000006: Autocommit mode: false 21 六月 12, 2018 1:30:13 下午 org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure 22 INFO: HHH000115: Hibernate connection pool size: 20 (min=1) 23 六月 12, 2018 1:30:14 下午 org.hibernate.dialect.Dialect <init> 24 INFO: HHH000400: Using dialect: org.hibernate.dialect.MySQLDialect 25 六月 12, 2018 1:30:14 下午 org.hibernate.boot.model.source.internal.hbm.ModelBinder bindProperty 26 WARN: HHH90000003: Use of DOM4J entity-mode is considered deprecated 27 六月 12, 2018 1:30:14 下午 org.hibernate.boot.model.source.internal.hbm.ModelBinder bindProperty 28 WARN: HHH90000003: Use of DOM4J entity-mode is considered deprecated 29 六月 12, 2018 1:30:14 下午 org.hibernate.boot.model.source.internal.hbm.ModelBinder bindProperty 30 WARN: HHH90000003: Use of DOM4J entity-mode is considered deprecated 31 六月 12, 2018 1:30:14 下午 org.hibernate.boot.model.source.internal.hbm.ModelBinder bindProperty 32 WARN: HHH90000003: Use of DOM4J entity-mode is considered deprecated 33 六月 12, 2018 1:30:14 下午 org.hibernate.boot.model.source.internal.hbm.ModelBinder bindProperty 34 WARN: HHH90000003: Use of DOM4J entity-mode is considered deprecated 35 六月 12, 2018 1:30:14 下午 org.hibernate.boot.model.source.internal.hbm.ModelBinder bindProperty 36 WARN: HHH90000003: Use of DOM4J entity-mode is considered deprecated 37 六月 12, 2018 1:30:14 下午 org.hibernate.tool.hbm2ddl.SchemaUpdate execute 38 INFO: HHH000228: Running hbm2ddl schema update 39 sessionFactory Normal Running... 40 Hibernate: 41 insert 42 into 43 STUDENT 44 (NAME) 45 values 46 (?) 47 Hibernate: 48 insert 49 into 50 STUDENT 51 (NAME) 52 values 53 (?) 54 Hibernate: 55 insert 56 into 57 STUDENT 58 (NAME) 59 values 60 (?) 61 Hibernate: 62 insert 63 into 64 STUDENT 65 (NAME) 66 values 67 (?) 68 Hibernate: 69 insert 70 into 71 TEACHER 72 (NAME) 73 values 74 (?) 75 Hibernate: 76 insert 77 into 78 TEACHER 79 (NAME) 80 values 81 (?) 82 Hibernate: 83 insert 84 into 85 TEACHER 86 (NAME) 87 values 88 (?) 89 Hibernate: 90 insert 91 into 92 STUDENT_TEACHER 93 (TEACHERID, STUDENTID) 94 values 95 (?, ?) 96 Hibernate: 97 insert 98 into 99 STUDENT_TEACHER 100 (TEACHERID, STUDENTID) 101 values 102 (?, ?) 103 Hibernate: 104 insert 105 into 106 STUDENT_TEACHER 107 (TEACHERID, STUDENTID) 108 values 109 (?, ?) 110 Hibernate: 111 insert 112 into 113 STUDENT_TEACHER 114 (TEACHERID, STUDENTID) 115 values 116 (?, ?) 117 Hibernate: 118 insert 119 into 120 STUDENT_TEACHER 121 (TEACHERID, STUDENTID) 122 values 123 (?, ?) 124 Hibernate: 125 insert 126 into 127 STUDENT_TEACHER 128 (TEACHERID, STUDENTID) 129 values 130 (?, ?) 131 Hibernate: 132 insert 133 into 134 STUDENT_TEACHER 135 (TEACHERID, STUDENTID) 136 values 137 (?, ?) 138 六月 12, 2018 1:30:14 下午 org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl stop 139 INFO: HHH000030: Cleaning up connection pool [jdbc:mysql://localhost:3306/zhangpn?serverTimezone=GMT&useSSL=false]
学生表
中间表
老师表