aop log切面

@Aspect:描述一个切面类，定义切面类的时候需要打上这个注解

@Component：spring-boot配置类

package com.*.*.tools;

import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.Signature;
import org.aspectj.lang.annotation.*;
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;
import java.util.Arrays;

@Aspect
@Component
public class LogAspect {

    /**
     * 功能描述: 拦截对这个包下所有方法的访问
     *
     * @param:[]
     * @return:void
     **/
    @Pointcut("execution(* com.*.*.controller.*..*(..))")
    public void loginLog() {
    }

    // 前置通知
    @Before("loginLog()")
    public void loginBefore(JoinPoint joinPoint) {

        // 我们从请求的上下文中获取request，记录请求的内容
        ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();

        HttpServletRequest request = attributes.getRequest();

        System.out.println("请求路径 : " + request.getRequestURL());
        System.out.println("请求方式 : " + request.getMethod());
        System.out.println("方法名 : " + joinPoint.getSignature().getName());
        System.out.println("类路径 : " + joinPoint.getSignature().getDeclaringTypeName());
        System.out.println("参数 : " + Arrays.toString(joinPoint.getArgs()));
    }

//    @AfterReturning(returning = "object", pointcut = "loginLog()")
//    public void doAfterReturning(Object object) {
//
//        System.out.println("方法的返回值 : " + object);
//    }

    // 方法发生异常时执行该方法
    @AfterThrowing(throwing = "e",pointcut = "loginLog()")
    public void throwsExecute(JoinPoint joinPoint, Exception e) {

        System.err.println("方法执行异常 : " + e.getMessage());
    }

    // 后置通知
//    @After("loginLog()")
//    public void afterInform() {
//
//        System.out.println("后置通知结束");
//    }

    // 环绕通知
    @Around("loginLog()")
    public Object surroundInform(ProceedingJoinPoint proceedingJoinPoint) {

        long startTime=System.currentTimeMillis();
        try {
            Object o =  proceedingJoinPoint.proceed();
            long times=System.currentTimeMillis()-startTime;
            MethodSignature signature = (MethodSignature) proceedingJoinPoint.getSignature();
            String methodName = signature.getDeclaringTypeName() + "." + signature.getName();
            System.out.println("【"+methodName+"】执行时间:" +times/1000+"s" );
            return o;
        } catch (Throwable e) {
            e.printStackTrace();
            return null;
        }
    }
}