aop | 易学教程

package cn.com.rivercloud.log.aspect;

import cn.com.rivercloud.log.domain.SysLogs;
import cn.com.rivercloud.log.service.SysLogsService;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import lombok.extern.slf4j.Slf4j;
import org.apache.shiro.SecurityUtils;
import org.apache.shiro.subject.Subject;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import java.util.Map;

/**
 * @author shichangle
 * date 
 */

@Component
@Aspect
@Slf4j
public class LogAspect {

    @Autowired
    private SysLogsService sysLogsService;

    private long currentTime = 0L;

    /**
     * 配置切入点　　　* 通过注解
     */
    @Pointcut("@annotation(cn.com.rivercloud.log.aop.log.Log)")
    public void logPointCut(){}

    private final String pointCut= "execution(* cn.com....自己写))";

　　 /**
     * 配置切入点　　　* 通过目录
     */ 　 @Pointcut(pointCut)

    public void logPointCut(){}

//    @Around("logPointCut()")
//    public Object logAround(ProceedingJoinPoint joinPoint) throws Throwable {
//        Object result;
//
//        currentTime = System.currentTimeMillis();
//        result = joinPoint.proceed();
//        SysLogs sysLogs = new SysLogs("Info",System.currentTimeMillis()-currentTime);
//        //存储信息
//        String username = getUsername();
//        String ip = getIp();
//
//        sysLogsService.save(username,ip,joinPoint,sysLogs);
//        return result;
//    }
　　

    @Before(value = "logPointCut()")
    public void logBefore(JoinPoint joinPoint){
        System.out.println("前置通知");
        System.out.println(joinPoint);
        Object[] args = joinPoint.getArgs();
        for (Object arg : args) {
            System.out.println(arg);
        }
    }


    @AfterReturning(value = "logPointCut()",returning = "keys")
    public void logAfterReturning(JoinPoint joinPoint,Object keys){

        Map<String,Object> map = JSON.parseObject(keys.toString());
        String success = map.get("success").toString();
        if(success.equals("true")){
            currentTime = System.currentTimeMillis();
            SysLogs sysLogs = new SysLogs("Info",System.currentTimeMillis()-currentTime);
            //存储信息
            String username = getUsername();
            String ip = getIp();
            sysLogsService.save(username,ip,(ProceedingJoinPoint)joinPoint,sysLogs);
        }else{
            SysLogs log = new SysLogs("ERROR",System.currentTimeMillis()-currentTime);
            String username = getUsername();
            String ip = getIp();
            sysLogsService.save(username,ip,(ProceedingJoinPoint) joinPoint,log);
        }

    }


//    /**
//     * 配置异常通知
//     * @param joinPoint
//     * @param e
//     */
//    @AfterThrowing(pointcut = "logPointCut()",throwing = "e")
//    public void logAfterThrowing(JoinPoint joinPoint,Throwable e){
//        SysLogs log = new SysLogs("ERROR",System.currentTimeMillis()-currentTime);
//        String username = getUsername();
//        String ip = getIp();
//        sysLogsService.save(username,ip,(ProceedingJoinPoint) joinPoint,log);
//    }

    private String getUsername() {
        Object principal = SecurityUtils.getSubject().getPrincipal();
        return principal.toString();
    }

    private String getIp(){
        Subject subject = SecurityUtils.getSubject();
        String host = subject.getSession().getHost();
        return host;
    }
}

package cn.com.rivercloud.log.aop.log;

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

/**
 * @author shichangle
 * date
 */
@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
public @interface Log {
    String value() default "";
}

来源：https://www.cnblogs.com/notchangeworld/p/12193502.html

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