package com.nowcoder.community.aspect;

import org.aspectj.lang.ProceedingJoinPoint;

import org.aspectj.lang.annotation.*;

import org.springframework.stereotype.Component;

//@Component

//@Aspect

public class AlphaAspect {

    @Pointcut("execution(* com.nowcoder.community.service.*.*(..))")

    public void pointcut() {

    }

    @Before("pointcut()")

    public void before() {

        System.out.println("before");

    }

    @After("pointcut()")

    public void after() {

        System.out.println("after");

    }

    @AfterReturning("pointcut()")

    public void afterRetuning() {

        System.out.println("afterRetuning");

    }

    @AfterThrowing("pointcut()")

    public void afterThrowing() {

        System.out.println("afterThrowing");

    }

    @Around("pointcut()")

    public Object around(ProceedingJoinPoint joinPoint) throws Throwable {

        System.out.println("around before");

        Object obj = joinPoint.proceed();

        System.out.println("around after");

        return obj;

    }

}

package com.nowcoder.community.aspect;

import org.aspectj.lang.JoinPoint;

import org.aspectj.lang.annotation.Aspect;

import org.aspectj.lang.annotation.Before;

import org.aspectj.lang.annotation.Pointcut;

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 java.text.SimpleDateFormat;

import java.util.Date;

@Component

@Aspect

public class ServiceLogAspect {

    private static final Logger logger = LoggerFactory.getLogger(ServiceLogAspect.class);

    @Pointcut("execution(* com.nowcoder.community.service.*.*(..))")

    public void pointcut() {

    }

    @Before("pointcut()")

    public void before(JoinPoint joinPoint) {

        // 用户[1.2.3.4],在[xxx],访问了[com.nowcoder.community.service.xxx()].

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

        HttpServletRequest request = attributes.getRequest();

        String ip = request.getRemoteHost();

        String now = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date());

        String target = joinPoint.getSignature().getDeclaringTypeName() + "." + joinPoint.getSignature().getName();

        logger.info(String.format("用户[%s],在[%s],访问了[%s].", ip, now, target));

    }

}