《mysql使用hibernate入门案例》
//User.javapackage com.fenghuo.domain;public class User {private Integer id;private String username;private String password;public String getUsername() {return username;}public void setUsername(String username) {this.username = username;}public Integer getId() {return id;}public void setId(Integer id) {this.id = id;}public String getPassword() {return password;}public void setPassword(String password) {this.password = password;}}<!-- User.hbm.xml --><?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"><!-- 该文件用于配置，domain跟表的映射关系 --><hibernate-mapping package="com.fenghuo.domain"><class name="User" table="user"><!-- id元素用于指定主键属性 --><id name="id" column="id" type="java.lang.Integer"><!-- 用于指定主键生成策略 --><generator class="native"></generator></id><!-- 对其他属性进行配置 --><property name="username" type="java.lang.String"><column name="username" not-null="false"></column></property><property name="password" type="java.lang.String"><column name="password" not-null="false"></column></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://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd"><hibernate-configuration><session-factory><!-- 配置使用的driver --><property name="connection.driver_class">com.mysql.jdbc.Driver</property><property name="connection.username">root</property><property name="connection.password">123</property><property name="connection.url">jdbc:mysql:///test</property><!-- 告诉hibernate用的那种数据库 --><property name="dialect">org.hibernate.dialect.MySQLDialect</property><!-- 显示出对应的sql语句 --><property name="show_sql">true</property><!-- 指定对象管理映射文件 --><mapping resource="com/fenghuo/domain/User.hbm.xml"/></session-factory></hibernate-configuration>
//TestMain.javapackage com.fenghuo.view;import org.hibernate.SessionFactory;import org.hibernate.Transaction;import org.hibernate.cfg.Configuration;import org.hibernate.classic.Session;import com.fenghuo.domain.User;public class TestMain {public static void main(String[] args) {//1.创建Configuration,该对象用于读取hibernate.cfg.xml，并完成初始化Configuration configuration = new Configuration().configure();//2.创建SessionFactory[是一个会话工厂，是一个重量级的类]SessionFactory sessionFactory = configuration.buildSessionFactory();//3.创建SessionSession session = sessionFactory.openSession();//4.使用事务提交Transaction transaction = session.beginTransaction();//添加一个用户User user = new User();user.setUsername("fenghuo");user.setPassword("123");session.save(user);transaction.commit();session.close();}}文件结构：
