使用spring boot通过自定义注解打印所需日志

@Retention (RetentionPolicy.RUNTIME)

@Target (ElementType.METHOD)

public @interface WebLog {

     /**

      * 日志信息描述

      */

     String description() default "" ;

}

@Aspect

@Component

public class WebLogAspect {

     private static ThreadLocal<ProceedingJoinPoint> td = new ThreadLocal<>();

     @Pointcut ( "@annotation(com.example.demo.annotation.WebLog)" )

     @Order ( 1 )

     public void webLog(){}

     @Before ( "webLog()" )

     public void doBefor(JoinPoint point){

         System.out.println( "***********method before执行************" );

         ServletRequestAttributes attributes = (ServletRequestAttributes)RequestContextHolder.getRequestAttributes();

         HttpServletRequest request = attributes.getRequest();

         System.out.println( "请求URL：" +request.getRequestURL());

         System.out.println( "请求参数：" + Arrays.toString(point.getArgs()));

         System.out.println( "***********method before结束************" );

     }

     @Around ( "webLog()" )

     public Object doAround(ProceedingJoinPoint point) throws Throwable {

         System.out.println( "***********执行环绕方法开始************" );

         td.set(point);

         long startTime = System.currentTimeMillis();

         ProceedingJoinPoint joinPoint = td.get();

         Object proceed = joinPoint.proceed();

         System.out.println( "执行耗时毫秒：" + (System.currentTimeMillis()-startTime));

         System.out.println( "***********执行环绕方法结束************" );

         return proceed;

     }

}

@RestController

public class LoginController {

     @PostMapping ( "/user/login" )

     @WebLog (description = "用户登录接口" )

     public UserForm login( @RequestBody UserForm user){

         return user;

     }

}

package com.hisense.demo02;

import java.lang.annotation.ElementType;

import java.lang.annotation.Retention;

import java.lang.annotation.RetentionPolicy;

import java.lang.annotation.Target;

/**

  * @author : sunkepeng  E-mail : sunkepengouc@163测试数据

  * @date : 2020/8/8 20:09

  */

@Retention (RetentionPolicy.RUNTIME)

@Target (ElementType.METHOD)

public @interface Check {

}

package com.hisense.demo02;

/**

  * @author : sunkepeng  E-mail : sunkepengouc@163测试数据

  * @date : 2020/8/8 20:04

  */

public class Calculator {

     @Check

     public void add(){

         System.out.println( "1+0=" + ( 1 + 0 ));

     }

     @Check

     public void sub(){

         System.out.println( "1-0=" + ( 1 - 0 ));

     }

     @Check

     public void mul(){

         System.out.println( "1*0=" + ( 1 * 0 ));

     }

     @Check

     public void div(){

         System.out.println( "1/0=" + ( 1 / 0 ));

     }

     public void show(){

         System.out.println( "永无bug" );

     }

}

package com.hisense.demo02;

import java.io.BufferedWriter;

import java.io.FileWriter;

import java.io.IOException;

import java.lang.reflect.Method;

/**

  * @author : sunkepeng  E-mail : sunkepengouc@163测试数据

  * @date : 2020/8/8 21:39

  */

public class TestCheck {

     public static void main(String[] args) throws IOException {

         Calculator calculator = new Calculator();

         Class calculatorClass = calculator.getClass();

         Method[] methods = calculatorClass.getMethods();

         int number = 0 ;

         BufferedWriter bufferedWriter = new BufferedWriter( new FileWriter( "bug.txt" ));

         for (Method method : methods) {

             if (method.isAnnotationPresent(Check. class )){

                 try {

                     method.invoke(calculator);

                 } catch (Exception e) {

                     number++;

                     bufferedWriter.write(method.getName()+ "出现异常" );

                     bufferedWriter.newLine();

                     bufferedWriter.write( "异常的名称：" +e.getCause().getClass().getSimpleName());

                     bufferedWriter.newLine();

                     bufferedWriter.write( "异常的原因" +e.getCause().getMessage());

                     bufferedWriter.newLine();

                     bufferedWriter.write( "-----------------" );

                     bufferedWriter.newLine();

                 }

             }

         }

         bufferedWriter.write( "本次共出现：" +number+ "次异常" );

         bufferedWriter.flush();

         bufferedWriter.close();

     }

}