Java AOP实现接口请求日志打印

在学习Spring-cloud框架的时候，正好用到了打印请求参数，Java还好有Aop，不用在请求的时候和返回的时候打日志，统一由Aop来实现，实现很简单

package com.tansun.springcloud.project.b.web.config;

import com.alibaba.fastjson.JSON;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.ProceedingJoinPoint;
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;

@Component
@Aspect
public class RequestLogAspect {

    private static final Logger log = LoggerFactory.getLogger(RequestLogAspect.class);

    /**
     * 切入点
     */
    @Pointcut("execution(* com.demo.springcloud.project.b.web.controller..*(..)) ")
    public void entryPoint() {
        // 无需内容
    }

    @Before("entryPoint()")
    public void doBefore(JoinPoint joinPoint) {
        try {
            ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
            HttpServletRequest request = attributes.getRequest();

            String className = joinPoint.getTarget().getClass().getName();
            String methodName = joinPoint.getSignature().getName();
            Object[] parameters = joinPoint.getArgs();
            log.info("==================接口请求日志开始==================");
            log.info("URL:"+request.getRequestURL().toString()+"\n"
                    +"IP:"+request.getRemoteAddr()+"\n"
                    +"HTTP Method:"+request.getMethod()+"\n"
                    +"类名:" + className+"\n"
                    + "方法名:" + methodName+"\n"
                    + "请求参数:" + JSON.toJSONString(parameters));
            log.info("==================接口请求日志结束==================");
        } catch (Throwable e) {
            log.info("around " + joinPoint + " with exception : " + e.getMessage());
        }

    }

    @Around("entryPoint()")
    public Object doAround(ProceedingJoinPoint joinPoint) throws Throwable {

        String className = joinPoint.getTarget().getClass().getName();
        String methodName = joinPoint.getSignature().getName();

        long startTime = System.currentTimeMillis();
        Object result = joinPoint.proceed();
        long time = System.currentTimeMillis() - startTime;

        log.info("==================接口返回日志开始==================");
        log.info(
                "类名:" + className+"\n"
                + "方法名:" + methodName+"\n"
                + "返回结果:" + JSON.toJSONString(result)+"\n"
                + "方法执行耗时:"+time+"ms"
        );
        log.info("==================接口返回日志结束==================");

        return result;
    }

    @AfterThrowing(pointcut = "entryPoint()", throwing = "e")
    public void doAfterThrowing(JoinPoint joinPoint, Throwable e) {
        // 通过request获取登陆用户信息
        // HttpServletRequest request = ((ServletRequestAttributes)
        // RequestContextHolder.getRequestAttributes()).getRequest();
        try {
            String className = joinPoint.getTarget().getClass().getName();
            String methodName = joinPoint.getSignature().getName();
            Object[] parameters = joinPoint.getArgs();

            log.info("异常方法:" + className + "." + methodName + "();参数:" + JSON.toJSONString(parameters));
            log.info("异常信息:" + e.getMessage());
        } catch (Exception ex) {
            log.error("异常信息:{}", ex.getMessage());
        }
    }
}