aop 打印请求信息

项目中使用 AOP 打印请求信息，打印响应信息。
package com.example.aspect;

import com.alibaba.fastjson.JSON;
import com.google.gson.Gson;
import com.example.util.DateUtil;
import org.apache.commons.lang.ArrayUtils;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.*;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.Arrays;
import java.util.List;
import java.util.stream.Collectors;
import java.util.stream.Stream;

/**
 * @author mingtian
 * @desctiption：类功能说明： aop 切面 打印日志
 * @data 2019/12/22
 * @version：V1
 */
@Aspect
@Component
public class HttpAspect {

    protected Logger logger = LoggerFactory.getLogger(HttpAspect.class);

    private Gson gson = new Gson();

    /**
     * 要处理的方法，包名+类名+方法名
     */
    @Pointcut("execution(* com.example.web.controller..*.*(..))")
    public void cut() {
    }

    /**
     * 前置通知方法
     *
     * @param joinPoint
     */
    @Before("cut()")
    public void doBefore(JoinPoint joinPoint) {
        //用于获取类方法
        logger.info("------------------------ doBefore ----------------------------");
        ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
        HttpServletRequest request = attributes.getRequest();
        // 记录下请求内容
        StringBuffer requestInfo = new StringBuffer();
        requestInfo.append("Address: " + request.getRequestURL().toString() + "\n");
        requestInfo.append("IP: " + request.getRemoteAddr() + "\n");
        requestInfo.append("MethodName:" + joinPoint.getSignature() + "\n");
        Object[] args = joinPoint.getArgs();
        //序列化时过滤掉request和response
        List<Object> logArgs = streamOf(args).filter(arg -> (!(arg instanceof HttpServletRequest) && !(arg instanceof HttpServletResponse)))
                .collect(Collectors.toList());
        String argStr = JSON.toJSONString(logArgs);
        requestInfo.append("RequestParam:" + argStr + "\n");
        logger.info(DateUtil.getNowDate() + ",RequestInfo:\n" + requestInfo);
    }

    /**
     * 过滤工具类
     *
     * @param array
     * @param <T>
     * @return
     */
    public static <T> Stream<T> streamOf(T[] array) {
        return ArrayUtils.isEmpty(array) ? Stream.empty() : Arrays.asList(array).stream();
    }

    /**
     * 后置通知
     */
    @After("cut()")
    public void doAfter() {
        logger.info("-------------------------------doAfter-----------------------");
    }

    /**
     * 执行完方法之后返回的参数
     *
     * @param obj
     */
    @AfterReturning(returning = "obj", pointcut = "cut()")
    public void doAfterReturning(Object obj) {
        // 处理完请求，返回相应参数
        logger.info(DateUtil.getNowDate() + ",ResponseResult:" + gson.toJson(obj));
    }
}
注意：

DateUtil.getNowDate()  是一个获取当前时间的工具类，如下。

/**
 * 格式化日期 格式:yyyy-MM-dd HH:mm:ss SSS
 */
public static String getNowDate() {
    String format = "yyyy-MM-dd HH:mm:ss SSS";
    return LocalDateTime.now().format(DateTimeFormatter.ofPattern(format));
}