Spring - 10 Spring框架的AOP技术（注解方式）

 

• 引入Spring框架开发的基本开发包,spring的传统AOP的开发的包与aspectJ的开发包

 

 

• 创建spring配置文件 applicationContext.xml

<beans xmlns="http://www.springframework.org/schema/beans"
		       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
		       xmlns:aop="http://www.springframework.org/schema/aop"
		       xsi:schemaLocation="
				http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
				http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd">
			
		</beans>

 

• 创建包结构

dao

package dao;

public class CustomerDaoImpl implements CustomerDao{

	@Override
	public void save() {
		System.out.println("dao save");
	}

}

切面类

package demo;

import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;


@Aspect//定义切面类的注解
public class AspectAnno {
	
	//定义前置通知（value填写切入点表达式）
	@Before(value="execution(* *..*DaoImpl.save(..))")
	public void demo1() {
		System.out.println("before anno");
	}
	
	
	
}

• 将目标类与切面类配置到applicationContex.xml中，并设置自动代理

自动代理作用：https://www.cnblogs.com/zmxie/p/3399629.html

<?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:aop="http://www.springframework.org/schema/aop"
	xsi:schemaLocation="
				http://www.springframework.org/schema/beans 
				http://www.springframework.org/schema/beans/spring-beans.xsd
				http://www.springframework.org/schema/aop 
				http://www.springframework.org/schema/aop/spring-aop.xsd">
				
				
	<!-- 定义自动代理 -->
	<aop:aspectj-autoproxy/>
	<!-- spring 代理bean -->
	<bean id="customerDao" class="dao.CustomerDaoImpl"/>
	<!-- 定义切面类 -->
	<bean id="aspectAnno" class="demo.AspectAnno"/>
	
	
</beans>

• 编写测试类

package demo;

import javax.annotation.Resource;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import dao.CustomerDao;

//定义@RunWith继承junit测试环境，@ContextConfiguration初始化xml
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:applicationContext.xml")
public class Demo {
	
	//用@Resource获得bean
	@Resource(name="customerDao")
	private CustomerDao cdao;
	
	//测试方法
	@Test
	public void demo1() {
		cdao.save();
	}
}

测试结果：