package com.itheima.annotation;
public interface UserDao {
    public void save();
}

package com.itheima.annotation;
import org.springframework.stereotype.Repository;
@Repository("userDao")   //DAO层的类标识为bean
public class UserDaoImpl implements UserDao{
   public void save(){
	  System.out.println("userdao实现的...save...");
   }
}

package com.itheima.annotation;
public interface UserService {
	public void save();
}

package com.itheima.annotation;
import javax.annotation.Resource;
import org.springframework.stereotype.Service;
@Service("userService")   
public class UserServiceImpl implements UserService{
	@Resource(name="userDao")  
	private UserDao userDao;  
	public void save() {
         
		this.userDao.save();
		System.out.println("userservice服务层....save..."+this.userDao);
	}
}

package com.itheima.annotation;
import javax.annotation.Resource;
import org.springframework.stereotype.Controller;
@Controller("userController") 
public class UserController {
	@Resource(name="userService")
	private UserService userService;
	
	public void save(){
		this.userService.save();
		System.out.println("userController...save..."+this.userService);
	}
}

<?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">

	 <!-- 使用 context 命名空间 ,在配置文件中开启注解处理器 -->
	 <context:annotation-config /> 

	 <!--分别定义3个Bean实例：此时不再需配置<property>子元素了 -->
      <bean id="userDao" 
          class="com.itheima.annotation.UserDaoImpl" />
      <bean id="userService" 
		  class="com.itheima.annotation.UserServiceImpl" />
      <bean id="userController" 
		  class="com.itheima.annotation.UserController" />
</beans>

package com.itheima.annotation;
import org.springframework.context.ApplicationContext;
import 
   org.springframework.context.support.ClassPathXmlApplicationContext;
public class AnnotationAssembleTest {
	public static void main(String[] args) {
		String xmlPath = "com/itheima/annotation/beans6.xml";
		ApplicationContext applicationContext = 
				new ClassPathXmlApplicationContext(xmlPath);  //通过Spring容器加载配置文件
		UserController userController = 
		  (UserController) applicationContext.getBean("userController");// 获取UserController实例
		// 调用UserController中save()
		userController.save();
	}
}