bean装配--注解

1，Dao层

package com.songyan.zhujie;

public interface UserDao {
    public void say();

}

package com.songyan.zhujie;

import org.springframework.stereotype.Repository;

@Repository("userDao")
public class UserDaoImpl implements UserDao {
public  void say() {
    System.out.println("dao say   ");

}
}

 

2，Service层

package com.songyan.zhujie;

public interface UserService {
    public void say();
}

package com.songyan.zhujie;

import org.springframework.stereotype.Repository;

@Repository("userDao")
public class UserDaoImpl implements UserDao {
public  void say() {
    System.out.println("dao say   ");

}
}

 

3，Controller层

package com.songyan.zhujie;

import javax.annotation.Resource;

import org.springframework.stereotype.Controller;

@Controller("contraller")
public class UserController {
    @Resource(name="userService")
    private UserService userService;
    public void say(){
        userService.say();
        System.out.println("controller say");
    }
    

}

 

4，配置

<?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"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd">
    <context:component-scan base-package="com.songyan.zhujie" />
</beans>

 

5，测试

package com.songyan.zhujie;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class TestZhujie {
    public static void main(String[] args) {
        ApplicationContext applicationContext=new ClassPathXmlApplicationContext("com/songyan/zhujie/beans6.xml");
        UserController userController=(UserController)applicationContext.getBean("contraller");
        userController.say();
        
    }

}

 

6，结果