注解方式的AOP配置

1，首先切面类

package com.ming.anno;

import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.springframework.stereotype.Component;

@Component("myAspect")
@Aspect//告诉Spring容器切面类
public class MyAspect {

    @Before("execution(* com.ming.anno.*.*(..))")//正常的xml配置是<aop:before method="before" pointcut="execution(* com.ming.aop.*.*(..))"></aop:before>可以对比注释

   public void before(){
        System.out.println("前置增强...");
    }

  
}

2.目标对象

package com.ming.anno;

import org.springframework.stereotype.Component;

@Component("Target")//注入实现类
public class Target implements TargetInterface {
    public void save() {
        System.out.printf("save running...");
    }
}

3.接口类

不用注入

package com.ming.anno;

public interface TargetInterface {
    public void save();
}

4.applicationContext.xml

<?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"
       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/context http://www.springframework.org/schema/context/spring-context.xsd
                            http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd">
    <!--开启组件扫描-->
    <context:component-scan base-package="com.ming.anno"/>
    <!--Aop代理-->
    <aop:aspectj-autoproxy/>
//没错只需要加入这两句话 

</beans>

5.测试类

package com.ming.Test;

import com.ming.anno.TargetInterface;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:applicationContext-anno.xml")
public class AnnoAopTest {


    @Autowired
    private TargetInterface target;

    @Test
    public void test1(){
        target.save();
    }


}

6.运行结果

前置增强...
save running...
Process finished with exit code 0