Student类
package com.wangning.bean;public class Student {private Integer id;private String name;private int age;private double score;@Overridepublic String toString() { ???return "Student [id=" + id + ", name=" + name + ", age=" + age + ", score=" ???????????+ score + "]";}public Student() { ???super();}public Student(String name, int age, double score) { ???super(); ???this.name = name; ???this.age = age; ???this.score = score;}public Integer getId() { ???return id;}public void setId(Integer id) { ???this.id = id;}public String getName() { ???return name;}public void setName(String name) { ???this.name = name;}public int getAge() { ???return age;}public void setAge(int age) { ???this.age = age;}public double getScore() { ???return score;}public void setScore(double score) { ???this.score = score;}}Student.hbm.xml
<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE hibernate-mapping PUBLIC ????"-//Hibernate/Hibernate Mapping DTD 3.0//EN" ???"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd"><hibernate-mapping package="com.wangning.bean"> ???<!-- 映射文件的作用： ???????????1、完成类到表的映射 2、属性到字段的映射 --> ???<class name="Student" table="t_student"> ???????<id name="id" column="tid"> ???????????<generator class="native"></generator> ???????</id> ???????<property name="name" column="tname"></property> ???????<property name="age" column="tage"></property> ???????<property name="score" column="tscore"></property> ???</class></hibernate-mapping>
hibernate.cfg.xml
<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE hibernate-configuration PUBLIC ???"-//Hibernate/Hibernate Configuration DTD 3.0//EN" ???"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd"><hibernate-configuration> ???<session-factory> ???????<!-- DB链接4要素 --> ???????<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property> ???????<property name="hibernate.connection.url">jdbc:mysql:///world</property> ???????<property name="hibernate.connection.username">root</property> ???????<property name="hibernate.connection.password">huadiyatou1314</property> ???????<!-- 方言 --> ???????<property name="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</property> ???????<!-- 数据源 :数据连接池--> ???????<property name="hibernate.connection.provider_class">org.hibernate.c3p0.internal.C3P0ConnectionProvider</property> ???????<!-- 当前session上下文:保证统一线程获取到的session是同一个--> ???????<property name="hibernate.current_session_context_class">thread</property> ???????<!-- 自动建表 --> ???????<property name="hibernate.hbm2ddl.auto">update</property> ???????????????<!-- 显示SQL --> ???????<property name="hibernate.show_sql">true</property> ???????<!-- 格式化SQL --> ???????<property name="hibernate.format_sql">true</property> ???????????????<mapping resource="com/wangning/bean/Student.hbm.xml"/> ???</session-factory></hibernate-configuration>
分析：
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd"><hibernate-configuration>
DTD----->这段代码可以从
hibernate-core-5.1.9.Final.jar/org/hibernate/hibernate-configuration-3.0.dtd
路径下copy。同理映射文件中的dtd也相应加入。
package test;import org.hibernate.Session;import org.hibernate.SessionFactory;import org.hibernate.cfg.Configuration;import org.junit.Test;import com.wangning.bean.Student;public class Test1 {@Test ???public ?void mytest() { ???????//加载主配置文件 ???????Configuration config=new Configuration().configure(); ???????//创建Session工厂 ???????SessionFactory sessionFactory=config.buildSessionFactory(); ???????//获取Session ???????Session session=sessionFactory.getCurrentSession(); ???????session.getTransaction().begin(); ???????//执行操作 ???????????????Student student =new Student("王五",21,100); ???????session.save(student); ???????session.getTransaction().commit(); ???}}
1、默认名字：hibernate.cfg.xml 是因为 new Configuration().configure()方法。如下定义：
???public static final String DEFAULT_CFG_RESOURCE_NAME = "hibernate.cfg.xml"; ???public Configuration configure() throws HibernateException { ???????return configure( StandardServiceRegistryBuilder.DEFAULT_CFG_RESOURCE_NAME ); ???}我们也可以更换名字为 wangwu.cfg.xml。只需在方法调用时 变更为
//加载主配置文件 ???????Configuration config=new Configuration().configure("wangwu.cfg.xml");hibernate5小案例讲解
原文地址：http://www.cnblogs.com/huadiyatou/p/7512811.html