spring註解1

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1. src下目錄結構如下:

2.測試類別

public class App {// 建立容器物件private ApplicationContext ac = new ClassPathXmlApplicationContext("cn/itcast/e_anno/bean.xml");@Testpublic void testExecuteAction() {// 從容器中擷取ActionUserAction userAction = (UserAction) ac.getBean("userAction");userAction.execute();}}

　3.控制層

@Controller  // 加入IOC容器public class UserAction {@Autowiredprivate UserService userService;public String execute() {userService.save();return null;}}

　　4.商務邏輯層

@Service // userService加入ioc容器public class UserService {@Autowiredprivate UserDao userDao;public void save() {userDao.save();}}

　　5.持久層

@Repository //  相當於bean.xml 【<bean id=userDao class=".." />】public class UserDao {public void save() {System.out.println("DB:儲存使用者!!!");}}

　　6. spring的設定檔

<?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:context="http://www.springframework.org/schema/context"    xsi:schemaLocation="        http://www.springframework.org/schema/beans        http://www.springframework.org/schema/beans/spring-beans.xsd        http://www.springframework.org/schema/context        http://www.springframework.org/schema/context/spring-context.xsd"><!-- 開啟註解掃描 --><context:component-scan base-package="cn.itcast.e_anno"></context:component-scan></beans>  

　　

 

spring註解1