第二百四十二天 how can I 坚持

作者记录了日常生活中的几件小事:首次戴着帽子上班的感受、购买并食用柚子导致上火的经历、当天严重的雾霾天气状况(PM2.5指数高达600)、观看电影《蚁人》的心得体会以及晚上进行的一场《英雄联盟》游戏。

  今天。。。

  貌似没啥啊。

  第一天带帽子上班。

  还有回来买了两个柚子吃了,有点上火啊。

  还有今天雾霾爆表啊,pm2.5  600多啊。

  还有看了部电影《蚁人》,挺好看。希望不会出二。三。四。。。

  好了 看会电影睡觉了。

  睡觉。晚上打了局LOL,玩了局机器人输了。

转载于:https://www.cnblogs.com/52-it/p/5008753.html

In Spring AOP (Aspect Oriented Programming), the `ProceedingJoinPoint` interface is a powerful tool that allows you to control method execution flow around the pointcut. The `before` advice in AOP is typically used when you want to perform some action before the target method is called. Here's an example of how you might use `before` and `proceedingJoinPoint`: ```java import org.aspectj.lang.JoinPoint; import org.aspectj.lang.annotation.Aspect; import org.aspectj.lang.annotation.Before; import org.springframework.stereotype.Component; @Aspect @Component public class LoggingAspect { @Before("execution(* com.example.service.MyService.*(..))") // Pointcut for methods in MyService public void logMethodCall(JoinPoint joinPoint) throws Throwable { // Before advice: Record the start time or log something before executing the method long startTime = System.currentTimeMillis(); System.out.println("Executing " + joinPoint.getSignature() + " ..."); // ProceedingJoinPoint is passed to access the target method ProceedingJoinPoint pjp = joinPoint.proceed(); try { // Method execution happens here pjp.proceed(); // Call the actual service method // After successful execution, record end time or log completion message long endTime = System.currentTimeMillis(); System.out.println("Completed " + joinPoint.getSignature() + " in " + (endTime - startTime) + "ms"); } catch (Exception e) { // Handle exceptions System.err.println("Error executing " + joinPoint.getSignature() + ": " + e.getMessage()); } } } ``` In this code snippet, we define an aspect that logs the start time of any method in the `MyService`. Then, using `proceedingJoinPoint`, we call the original method (`pjp.proceed()`) after logging. If an exception occurs during method execution, it is caught and handled within the `catch` block.
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