package com.dao;import java.util.List;import com.model.User;public interface UserDao {public void add(User user);public void delete(int id);public void update(User usser);public void get(int id);public List<User> findAll();
}

package com.dao.impl;import java.util.List;import com.dao.UserDao;
import com.model.User;public class UserHibernateDaoImpl implements UserDao {@Overridepublic void add(User user) {System.out.println("调用了UserHibernateDaoImpl add方法");}@Overridepublic void delete(int id) {System.out.println("调用了UserHibernateDaoImpl delete方法");}@Overridepublic void update(User usser) {System.out.println("调用了UserHibernateDaoImpl update方法");}@Overridepublic void get(int id) {System.out.println("调用了UserHibernateDaoImpl get方法");}@Overridepublic List<User> findAll() {System.out.println("调用了UserHibernateDaoImpl findAll方法");return null;}}

package com.dao.impl;import java.util.List;import com.dao.UserDao;
import com.model.User;public class UserJdbcDaoImpl implements UserDao {@Overridepublic void add(User user) {System.out.println("调用了UserJdbcDaoImpl add方法");}@Overridepublic void delete(int id) {System.out.println("调用了UserJdbcDaoImpl delete方法");}@Overridepublic void update(User usser) {System.out.println("调用了UserJdbcDaoImpl update方法");}@Overridepublic void get(int id) {System.out.println("调用了UserJdbcDaoImpl get方法");}@Overridepublic List<User> findAll() {System.out.println("调用了UserJdbcDaoImpl findAll方法");return null;}}

package com.model;public class User {private int id;private String name;public User(){}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;}}

package com.service;import com.dao.UserDao;
import com.dao.impl.UserJdbcDaoImpl;public class UserService {//IOC的声明方式private UserDao userDao;public void setUserDao(UserDao userDao){System.out.println("调用了setUserDao方法");this.userDao=userDao;}public void add(){userDao.add(null);}}

<?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" xmlns:tx="http://www.springframework.org/schema/tx"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.1.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd"><bean id="userDao1" class="com.dao.impl.UserJdbcDaoImpl"></bean><bean id="userService" class="com.service.UserService"><!-- 组装依赖关系 --><property name="userDao" ref="userDao1"></property></bean></beans>

package com.test;import org.junit.Test;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.xml.XmlBeanFactory;
import org.springframework.core.io.ClassPathResource;import com.service.UserService;public class TestUserService {@Testpublic void testAdd(){BeanFactory factory=new XmlBeanFactory(new ClassPathResource("applicationContext.xml"));UserService us=(UserService)factory.getBean("userService");us.add();}
}