jdbc.driverClassName=com.mysql.jdbc.Driver

jdbc.url=jdbc:mysql://localhost:3306/spring

jdbc.username=root

jdbc.password=linda0213

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"

	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

	xmlns:context="http://www.springframework.org/schema/context"

	xmlns:aop="http://www.springframework.org/schema/aop"

	xsi:schemaLocation="http://www.springframework.org/schema/beans

           http://www.springframework.org/schema/beans/spring-beans-2.5.xsd

           http://www.springframework.org/schema/context

           http://www.springframework.org/schema/context/spring-context-2.5.xsd

           http://www.springframework.org/schema/aop

           http://www.springframework.org/schema/aop/spring-aop-2.5.xsd">

	<context:annotation-config />

	<context:component-scan base-package="com.bjsxt" />

	<!--

		<bean id="dataSource"

		class="org.apache.commons.dbcp.BasicDataSource"

		destroy-method="close">

		<property name="driverClassName" value="com.mysql.jdbc.Driver" />

		<property name="url" value="jdbc:mysql://localhost:3306/spring" />

		<property name="username" value="root" />

		<property name="password" value="bjsxt" />

		</bean>

	-->

	<bean

		class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">

		<property name="locations">

			<value>classpath:jdbc.properties</value>

		</property>

	</bean>

	<bean id="dataSource" destroy-method="close"

		class="org.apache.commons.dbcp.BasicDataSource">

		<property name="driverClassName"

			value="${jdbc.driverClassName}" />

		<property name="url" value="${jdbc.url}" />

		<property name="username" value="${jdbc.username}" />

		<property name="password" value="${jdbc.password}" />

	</bean>

	<bean id="sessionFactory"

		class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">

		<property name="dataSource" ref="dataSource" />

		<property name="annotatedClasses">

			<list>

				<value>com.bjsxt.model.User</value>

			</list>

		</property>

		<property name="hibernateProperties">

			<props>

				<prop key="hibernate.dialect">

					org.hibernate.dialect.MySQLDialect

				</prop>

				<prop key="hibernate.show_sql">true</prop>

			</props>

		</property>

	</bean>

</beans>

package com.bjsxt.service;

import org.junit.Test;

import org.springframework.context.ApplicationContext;

import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.bjsxt.model.User;

//Dependency Injection

//Inverse of Control

public class UserServiceTest {

	@Test

	public void testAdd() throws Exception {

		ClassPathXmlApplicationContext ctx = new ClassPathXmlApplicationContext("beans.xml");

		UserService service = (UserService)ctx.getBean("userService");

		System.out.println(service.getClass());

		User user=new User();

		user.setName("zhangsan");

		service.add(user);

		ctx.destroy();

	}

}

package com.bjsxt.service;

import javax.annotation.Resource;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.beans.factory.annotation.Qualifier;

import org.springframework.stereotype.Component;

import com.bjsxt.dao.UserDAO;

import com.bjsxt.model.User;

@Component("userService")

public class UserService {

	private UserDAO userDAO;  

	public void init() {

		System.out.println("init");

	}

	public void add(User user) {

		userDAO.save(user);

	}

	public UserDAO getUserDAO() {

		return userDAO;

	}

	@Resource(name="u")

	public void setUserDAO( UserDAO userDAO) {

		this.userDAO = userDAO;

	}

	public void destroy() {

		System.out.println("destroy");

	}

}

package com.bjsxt.dao.impl;

import java.sql.SQLException;

import javax.annotation.Resource;

import org.hibernate.Session;

import org.hibernate.SessionFactory;

import org.springframework.stereotype.Component;

import com.bjsxt.dao.UserDAO;

import com.bjsxt.model.User;

@Component("u")

public class UserDAOImpl implements UserDAO {

	private SessionFactory sessionFactory;

	public SessionFactory getSessionFactory() {

		return sessionFactory;

	}

	@Resource

	public void setSessionFactory(SessionFactory sessionFactory) {

		this.sessionFactory = sessionFactory;

	}

	public void save(User user) {

		System.out.println("session factory class:" + sessionFactory.getClass());

		Session s = sessionFactory.openSession();

		s.beginTransaction();

		s.save(user);

		s.getTransaction().commit();

		System.out.println("user saved!");

		//throw new RuntimeException("exeption!");

	}

}

package com.bjsxt.dao;

import com.bjsxt.model.User;

public interface UserDAO {

	public void save(User user);

}

package com.bjsxt.model;

import javax.persistence.Entity;

import javax.persistence.GeneratedValue;

import javax.persistence.Id;

@Entity

public class User {

	private int id;

	private String name;

	@Id

	@GeneratedValue

	public int getId() {

		return id;

	}

	public void setId(int id) {

		this.id = id;

	}

	public String getName() {

		return name;

	}

	public void setName(String name) {

		this.name = name;

	}

}