hibernate经典配置与测试

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> <property name="hibernate.connection.driver_class"> com.mysql.jdbc.Driver </property> <property name="hibernate.connection.url"> jdbc:mysql:///crud </property> <property name="hibernate.connection.username"> root </property> <property name="hibernate.connection.password"> root </property> <property name="hibernate.dialect"> org.hibernate.dialect.MySQLDialect </property> <property name="hibernate.connection.pool_size"> 1 </property> <property name="hibernate.show_sql"> true </property> <property name="current_session_context_class"> thread </property> <mapping resource="com/kaisheng/pojo/User.hbm.xml"/> </session-factory> </hibernate-configuration>

 

User.java

package com.kaisheng.pojo;public class User {private int id;private String userName;private String userPwd;public int getId() {return id;}public void setId(int id) {this.id = id;}public String getUserName() {return userName;}public void setUserName(String userName) {this.userName = userName;}public String getUserPwd() {return userPwd;}public void setUserPwd(String userPwd) {this.userPwd = userPwd;}}

 

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"> <hibernate-mapping package="com.kaisheng.pojo"> <class name="User" table="t_user"> <id name="id" column="id"> </id> <property name="userName" column="username"></property> <property name="userPwd" column="userpwd"></property> </class> </hibernate-mapping>

 

HibernateUtil.java

 

package com.kaisheng.util;import org.hibernate.SessionFactory;import org.hibernate.cfg.Configuration;/** * 单态模式（只产生一个类的实例） * @author Administrator * */public class HibernateUtil {private static final SessionFactory factory=buildSessionFactory();private static SessionFactory buildSessionFactory() {return new Configuration().configure().buildSessionFactory();}public static SessionFactory getSessionFactory(){return factory;}}

 

Test.java

package com.kaisheng.test;import java.util.List;import org.hibernate.SessionFactory;import org.hibernate.Transaction;import org.hibernate.classic.Session;import com.kaisheng.pojo.User;import com.kaisheng.util.HibernateUtil;public class Test {@SuppressWarnings("unchecked")public static void main(String[] args){User user=new User();user.setUserName("阿杰");user.setUserPwd("123");SessionFactory factory=HibernateUtil.getSessionFactory();Session session=factory.getCurrentSession();Transaction tran=session.beginTransaction();//session.save(user);添加//User userGet=(User) session.load(User.class, 2);//System.out.println(userGet.getUserName());List<User> userList=session.createQuery("from User").list();for(User u:userList){System.out.println(u.getUserName());}tran.commit();}}