aop 拦截含有特定注解的类

Posted 2021-02-14 thinkingandworkinghard

1.功能点：使用aop拦截含有自定义注解的类

1.自定义注解

  

package com.zhuanche.common.dingdingsync;

import java.lang.annotation.*;

/**
 * @Author fanht
 * @Description 含有该注解的controller方法存储到mq
 * @Date 2019/2/28 上午11:26
 * @Version 1.0
 */
@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.METHOD,ElementType.TYPE})
@Documented
public @interface DingdingAnno {
}

2.使用切面

package com.zhuanche.common.dingdingsync;

import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.Signature;
import org.aspectj.lang.annotation.*;
import org.aspectj.lang.reflect.MethodSignature;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;

import java.lang.reflect.Method;
import java.util.Arrays;

/**
 * @Author fanht
 * @Description
 * @Date 2019/2/28 上午11:59
 * @Version 1.0
 */
@Component
@Aspect
public class DingdingAspect {

    private Logger logger = LoggerFactory.getLogger(this.getClass());

    @Pointcut("execution(* com.zhuanche.controller.driverteam.DriverTeamController.*(..))")
    public void pointCut(){
        logger.info("含有自定义注解dingdingAnno的方法...");
    }

    @Before("pointCut()  && @annotation(dingdingAnno) ")
    public void dingdingVerify(JoinPoint joinPoint,DingdingAnno dingdingAnno){
        System.out.println("&&&&&&&&&&&&&&&&&&&&");
        logger.info(joinPoint.getSignature().getName() + ",入参:{" + Arrays.asList(joinPoint.getArgs() + "}"));
    }



    @AfterReturning("pointCut() && @annotation(dingdingAnno)")
    public void finish(JoinPoint jointPoint,DingdingAnno dingdingAnno){
        logger.info(jointPoint.getSignature().getName() + "*********");
        Signature signature = jointPoint.getSignature();
        MethodSignature methodSignature = (MethodSignature) signature;
        Method method = methodSignature.getMethod();
        if (method != null){
           dingdingAnno = method.getAnnotation(DingdingAnno.class);
           if (dingdingAnno != null){
               System.out.println(jointPoint.getTarget().getClass().getName());
               System.out.println(jointPoint.getSignature().getName());
               System.out.println(jointPoint.getArgs().length);
           }
        }


        System.out.println(jointPoint.getSignature().getName());
    }
}



3.配置aop

<context:component-scan base-package="com.zhuanche.**"/>
<!--开启aop注解 -->
<aop:aspectj-autoproxy proxy-target-class="true"></aop:aspectj-autoproxy>

4.在类上面添加特定注解

@ResponseBody
@RequestMapping(value = "/driverTeamDetail")
@DingdingAnno
public AjaxResponse driverTeamDetail(DriverTeamRequest param){
   logger.info("查询车队详情入参:"+ JSON.toJSONString(param));
   CarDriverTeamDTO detail = carDriverTeamService.selectOneDriverTeam(param);
   return AjaxResponse.success(detail);
}

启动项目，遇到的几个问题：1.使用Jrebel 每次修改后，总是不成功，报各种异常。原因应该是 aop在spring启动时候就加载进去了，修改后需要重启；2.遇到的几个问题：1）启动报错

 

  原因一般是point后面的地址错误，我的原因是后面多加了&& +自定义注解名称

2）没进入后置通知： 第一次的时候，写的是  

 

@AfterReturning("within(com.zhuanche.controller..*) && @annotation(sdol)")
没有成功，具体原因还不太清楚。