hibernate3学习笔记(四) 增删改查

测试代码：

package com.hb3.pack_01;

import org.hibernate.Session; import org.hibernate.SessionFactory; import org.hibernate.Transaction; import org.hibernate.cfg.Configuration;

import com.hb3.pack_01.model.User;

public class BusinessService {

public static void main(String[] args) { Configuration config = new Configuration().configure(); SessionFactory sessionFactory = config.buildSessionFactory(); Session session = sessionFactory.openSession(); //insert User user = new User(); user.setName("chenyan"); //user.setAge(new Integer(23)); Transaction tx = session.beginTransaction(); session.save(user); tx.commit(); //get user = (User) session.get(User.class, user.getId()); System.out.println(user.getAge()); //update user.setAge(new Integer(24)); tx= session.beginTransaction(); session.update(user); tx.commit();

//load user = (User) session.load(User.class, user.getId()); System.out.println(user.getAge()); //delete tx = session.beginTransaction(); session.delete(user); tx.commit(); session.close(); sessionFactory.close(); } } 执行结果：

11:50:50,750 WARN ConfigurationFactory:127 - No configuration found. Configuring ehcache from ehcache-failsafe.xml found in the classpath: jar:file:/D:/Java/MyEclipse%206.0/workspace/hb3demo/ehcache-1.2.3.jar!/ehcache-failsafe.xml 11:50:51,156 WARN EhCacheProvider:93 - Could not find configuration [org.hibernate.cache.UpdateTimestampsCache]; using defaults. 11:50:51,171 WARN EhCacheProvider:93 - Could not find configuration [org.hibernate.cache.StandardQueryCache]; using defaults. Hibernate: insert into user (name, age) values (?, ?) null Hibernate: update user set name=?, age=? where id=? 24

hibernate3学习笔记(四) 增删改查(2)

修改User.hbm.xml文件如下：

<?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> <class name="com.hb3.pack_01.model.User" table="user" dynamic-insert="true" dynamic-update="true" > <id name="id" column="id" type="java.lang.Integer"> <generator class="native" /> </id> <property name="name" column="name" type="java.lang.String" /> <property name="age" column="age" type="java.lang.Integer" /> </class> </hibernate-mapping> 运行结果如下：

12:46:32,062 WARN ConfigurationFactory:127 - No configuration found. Configuring ehcache from ehcache-failsafe.xml found in the classpath: jar:file:/D:/Java/MyEclipse%206.0/workspace/hb3demo/ehcache-1.2.3.jar!/ehcache-failsafe.xml 12:46:32,468 WARN EhCacheProvider:93 - Could not find configuration [org.hibernate.cache.UpdateTimestampsCache]; using defaults. 12:46:32,500 W

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