读书人

Hibernate 筑项初探

发布时间: 2012-12-20 09:53:21 作者: rapoo

Hibernate 建项初探
首先建一个web project

导入Hibernate所需要的jar包,

.
+lib
antlr.jar
cglib.jar
asm.jar
asm-attrs.jars
commons-collections.jar
commons-logging.jar
ehcache.jar
hibernate3.jar
jta.jar
dom4j.jar
log4j.jar



这里我用的数据库是MySQL
然后创建所需要的Model,代码如下:

package com.xll.bean;public class UserModel implements java.io.Serializable{private static final long serialVersionUID = 1L;private int uuid;     private String userId;private String userName;private int age;private String pwd;private String registerTime;         public UserModel(){}//无参构造//setter and getter .....




在model的同级目录下建立UserModel.hbm.xml映射文件

<?xml version="1.0"?><!DOCTYPE hibernate-mapping SYSTEM "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd" ><hibernate-mapping><class name="com.xll.bean.UserModel" table="tbl_user" ><id name="uuid" column="uuid" ><generator column="userId" /><property name="userName" column="userName" /><property name="age" column="age" /><property name="registerTime" column="registerTime" /><property name="pwd" column="pwd" /></class></hibernate-mapping>


然后在src下配置hibernate.cfg.xml文件

<?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>        <!-- Database connection settings -->        <property name="connection.driver_class">com.mysql.jdbc.Driver</property>        <property name="connection.url">jdbc:mysql://localhost:3306/mydb</property>        <property name="connection.username">root</property>        <property name="connection.password">123</property>        <!-- SQL dialect -->        <property name="dialect">org.hibernate.dialect.MySQLDialect</property>        <!-- Echo all executed SQL to stdout -->        <property name="show_sql">true</property>        <mapping resource="com/xll/bean/UserModel.hbm.xml"/>    </session-factory></hibernate-configuration>



编写测试类 Client.java

package com.xll.test;import org.hibernate.Session;import org.hibernate.SessionFactory;import org.hibernate.Transaction;import org.hibernate.cfg.Configuration;import com.xll.bean.UserModel;public class Client {public static void main(String[] args) {UserModel um = new UserModel();um.setAge(11);um.setPwd("123123");um.setRegisterTime("2011-10-10");um.setUserId("432123");um.setUserName("xiaoliang");um.setUuid(6666);SessionFactory sf = new Configuration().configure().buildSessionFactory();Session s = null;Transaction t = null;try {s = sf.openSession();t = s.beginTransaction();s.save(um);t.commit();} catch (Exception e) {e.printStackTrace();t.rollback();} finally {s.close();}}}



运行结果:
Hibernate: insert into tbl_user (userId, userName, age, registerTime, pwd, uuid) values (?, ?, ?, ?, ?, ?)//配置中的show_sql

读书人网 >编程

热点推荐