spring Aop的一个demo

面向切面是什么我就不说了.

 

上代码:

package com.foreveross.service.weixin.test;

import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

@Documented
@Retention(value=RetentionPolicy.RUNTIME)
@Target(ElementType.METHOD)
public @interface Action {
    String name();
}

 

package com.foreveross.service.weixin.test;

import org.springframework.stereotype.Service;

@Service
public class DemoService {

    @Action(name="注解拦截操作...,这个是add操作...")
    public void addDemo(){
        
    }
}

 

package com.foreveross.service.weixin.test;

import org.springframework.stereotype.Service;

@Service
public class Demo1Service {
    @Action(name="addDemo1的日志")
    public void addDemo1(){
        
    }
}

 

package com.foreveross.service.weixin.test;

import java.lang.reflect.Method;

import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.stereotype.Component;

@Aspect
@Component
public class LogAspect {

    @Pointcut("@annotation(com.foreveross.service.weixin.test.Action)")
    public void annotationPointCut(){}
    
    @Before("execution(* com.foreveross.service.weixin.test.*.*(..))")
    public void before(JoinPoint joinPoint){
        MethodSignature signature=(MethodSignature)joinPoint.getSignature();
        Method method=signature.getMethod();
        System.out.println("方法规则式拦截:"+method.getName());
    }
    @After("annotationPointCut()")
    public void after(JoinPoint joinPoint){
        MethodSignature signature=(MethodSignature)joinPoint.getSignature();
        Method method=signature.getMethod();
        Action action=method.getAnnotation(Action.class);
        System.out.println("注解式拦截..."+action.name());
    }
}

 

package com.foreveross.service.weixin.test;

import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.EnableAspectJAutoProxy;

@Configuration
@ComponentScan("com.foreveross.service.weixin.test")
@EnableAspectJAutoProxy//注解开启Spring对AspectJ的支持
public class AppConfig {

}

 

package com.foreveross.service.weixin.test;

import org.springframework.context.annotation.AnnotationConfigApplicationContext;

public class Test {

    
    public static void main(String[] args) {
        AnnotationConfigApplicationContext context=new AnnotationConfigApplicationContext(AppConfig.class);
        DemoService demo=context.getBean(DemoService.class);
        Demo1Service demo1=context.getBean(Demo1Service.class);
        demo.addDemo();
        demo1.addDemo1();
        context.close();
    }
}