Annotation：注解装配

UserDao接口：

package com.student.annotation;

public interface UserDao {
   public  void say();
}

UserDaoImpl ：UserDao的实现类

package com.student.annotation;

import org.springframework.stereotype.Repository;

@Repository("userDao")
public class UserDaoImpl implements UserDao {
	@Override
	public void say() {
		System.out.println("userDao已经加载加载完成！！");
	}

}

UserService：类

package com.student.annotation;

public interface UserService {
	public void say();
}

UserServiceImpl：UserService的实现类：

package com.student.annotation;

import javax.annotation.Resource;

import org.springframework.stereotype.Service;

@Service("userService")
public class UserServiceImpl implements UserService {
	@Resource(name="userDao")
	private UserDao userDao;
	@Override
	public void say() {
		this.userDao.say();
		System.out.println("userService 加载完成！！！");
	}

}

UserController ：

package com.student.annotation;

import javax.annotation.Resource;

import org.springframework.stereotype.Controller;

@Controller("userController")
public class UserController {
	@Resource(name="userService")
	private UserService userService;
	public void say()
	{
		this.userService.say();
		System.out.println("UserController加载完成");
	}

}

AnnotationAssembleTest：

package com.student.annotation;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class AnnotationAssembleTest {

	public static void main(String[] args) {
		String xmlPath = "com/student/annotation/bean7.xml";
		ApplicationContext applicationContext =new ClassPathXmlApplicationContext(xmlPath);
		UserController userController =(UserController)applicationContext.getBean("userController");
		userController.say();

	}

}

bean7:

<?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.xsd
        http://www.springframework.org/schema/context
         http://www.springframework.org/schema/context/spring-context.xsd">
	<context:annotation-config/>
	<!-- services -->
	<bean id="userDao" class="com.student.annotation.UserDaoImpl"></bean>
	<bean id="userService" class="com.student.annotation.UserServiceImpl"></bean>
	<bean id="userController" class="com.student.annotation.UserController"></bean>
</beans>

运行结果：

十月 14, 2019 10:59:52 下午 org.springframework.context.support.ClassPathXmlApplicationContext prepareRefresh
信息: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@2b71fc7e: startup date [Mon Oct 14 22:59:52 CST 2019]; root of context hierarchy
十月 14, 2019 10:59:53 下午 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
信息: Loading XML bean definitions from class path resource [com/student/annotation/bean7.xml]
userDao已经加载加载完成！！
userService 加载完成！！！
UserController加载完成