首先创建annotation.SystemLog类：

package com.gjh.annotation;


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

@Target(ElementType.METHOD) //加在什么东西上
@Retention(RetentionPolicy.RUNTIME) //什么时候
public @interface SystemLog {

    String BusinessName(); //会以注解方式用在接口上
}

然后创建aspect.LogAspect：

package com.gjh.aspect;


import com.alibaba.fastjson.JSON;
import com.gjh.annotation.SystemLog;
import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.stereotype.Component;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.HttpServletRequest;

@Component
@Aspect
@Slf4j
public class LogAspect {

    @Pointcut("@annotation(com.gjh.annotation.SystemLog)")
    public void pt(){

    }


    @Around("pt()")
    public Object printLog(ProceedingJoinPoint joinPoint) throws Throwable {
        Object ret;
        try {
            handleBefore(joinPoint);
            ret = joinPoint.proceed();
            handleAfter(ret);
        } finally {
            // 结束后换行
            log.info("=======End=======" + System.lineSeparator());
        }

        return ret;
    }


    //切入点之前运行
    private void handleBefore(ProceedingJoinPoint joinPoint) {
        ServletRequestAttributes requestAttributes = (ServletRequestAttributes)RequestContextHolder.getRequestAttributes();
        HttpServletRequest request = requestAttributes.getRequest();

        //获取被增强的方法上的注解对象
        SystemLog systemLog = getSystemLog(joinPoint);

        log.info("=======Start=======");
        // 打印请求 URL
        log.info("URL            : {}",request.getRequestURL());
        // 打印描述信息
        log.info("BusinessName   : {}", systemLog.BusinessName());
        // 打印 Http method
        log.info("HTTP Method    : {}",request.getMethod());
        // 打印调用 controller 的全路径以及执行方法
        log.info("Class Method   : {}.{}",joinPoint.getSignature().getDeclaringTypeName(),((MethodSignature)joinPoint.getSignature()).getName());
        // 打印请求的 IP
        log.info("IP             : {}",request.getRemoteHost());
        // 打印请求入参
        log.info("Request Args   : {}", JSON.toJSONString(joinPoint.getArgs()));
    }

    private SystemLog getSystemLog(ProceedingJoinPoint joinPoint) {
        MethodSignature methodSignature =(MethodSignature) joinPoint.getSignature();
        SystemLog systemLog = methodSignature.getMethod().getAnnotation(SystemLog.class);
        return systemLog;
    }

    //切入点之后运行
    private void handleAfter(Object ret) {
    // 打印出参
        log.info("Response       : {}", JSON.toJSONString(ret));
    }
}

最后，在需要的接口上使用注解：

 @SystemLog(BusinessName = "更新用户信息")

 

例如我用在了：

@PutMapping("/userInfo")
    @Operation(tags = "修改个人信息")
    @SystemLog(BusinessName = "更新用户信息") //AOP
    public ResponseResult updateUserInfo(@RequestBody UserInfoDTO userInfoDTO){

        return ResponseResult.okResult(userservice.UpdateUserInfo(userInfoDTO));
    }

 

重启测试：

当我们进行修改个人信息之后：