?

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UserDao

package com.henu.dao; ? public interface UserDao {public void insert(); }

UerDaoImpl

package com.henu.dao; ? public class UerDaoImpl implements UserDao { ?public void insert() {System.out.println("dao:insert()");} }

UserService

package com.henu.service; ? /*** 業務層接口*/ public interface UserService {public void insert(); }

UserServiceImpl

package com.henu.service; ? import com.henu.dao.UserDao; ? public class UserServiceImpl implements UserService{//注入dao層對象public UserDao userDao; ?public void insert() {System.out.println("service:insert()");//調用dao層userDao.insert();} ?public UserDao getUserDao() {return userDao;} ?public void setUserDao(UserDao userDao) {this.userDao = userDao;} }

applicationContext.xml

<?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:p="http://www.springframework.org/schema/p"xmlns:aop="http://www.springframework.org/schema/aop"xsi:schemaLocation="http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans.xsdhttp://www.springframework.org/schema/aophttp://www.springframework.org/schema/aop/spring-aop.xsd"><!--dao--><bean id="userDaoImpl" class="com.henu.dao.UerDaoImpl"></bean><!--service--><bean id="userServiceImpl" class="com.henu.service.UserServiceImpl"><!--把dao注入到service--><property name="userDao" ref="userDaoImpl"></property></bean><!--controler--><bean id="userController" class="com.henu.controller.UserController"><property name="userService" ref="userServiceImpl"></property></bean> </beans>

測試App

import com.henu.controller.UserController; import org.springframework.context.support.ClassPathXmlApplicationContext; ? public class App {public static void main( String[] args ){//加載spring IoC配置文件//ApplicationContext context=new ClassPathXmlApplicationContext("applicationContext.xml");ClassPathXmlApplicationContext context=new ClassPathXmlApplicationContext(new String[]{"applicationContext.xml"});//獲取控制器對象UserController bean = context.getBean(UserController.class);//ctrl + alt + v//調用控制器方法bean.execute();//關閉ioc容器context.close(); ?} }

運行結果：

controller:execute() service:insert() dao:insert()

?

總結

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