Question

我是Spring-boot和AOP的新手。我正在尝试记录我的spring-boot应用程序中引发的异常。我想要做的是当我的应用程序类中的任何方法引发运行时异常时，我将其记录到控制台。

所以我用@AfterThrowing注释创建了一个方面。为了检查它是否正常工作，我故意写了一行代码，这会引发/ by zero异常。我用它进行了测试，但这种建议方法无效。

以下是我的测试代码：

package com.sware.SpringBoot_JPA_MySQL_Gradle_Project.aspects;

import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.AfterThrowing;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.springframework.stereotype.Component;

import com.sware.SpringBoot_JPA_MySQL_Gradle_Project.domains.User;

@Aspect
@Component
public class UserAspect {


    @Before("execution(* com.sware.SpringBoot_JPA_MySQL_Gradle_Project.services.UserService.saveUserToDb(com.sware.SpringBoot_JPA_MySQL_Gradle_Project.domains.User)) && args(user)")
    public void beforeUserSave(User user) {
       System.out.println("++++++++++++++++++++++++++++++Creating UserBefore Pointcut: \n"+user.toString());

    }



    @After("execution(* com.sware.SpringBoot_JPA_MySQL_Gradle_Project.services.UserService.saveUserToDb(com.sware.SpringBoot_JPA_MySQL_Gradle_Project.domains.User)) && args(user)")
      public void aftereUserSave(User user) {
         System.out.println("++++++++++++++++++++++++++++++Creating User After pointcut: \n"+user.toString());

      }

    @AfterThrowing(pointcut = "execution(* com.sware.SpringBoot_JPA_MySQL_Gradle_Project.services.*.*(..))", throwing = "e")
    public void myAfterThrowing(JoinPoint joinPoint, Throwable e) {

      System.out.println("Okay - we're in the handler...");

      /*Signature signature = joinPoint.getSignature();
      String methodName = signature.getName();
      String stuff = signature.toString();
      String arguments = Arrays.toString(joinPoint.getArgs());
     System.out.println("**************************EXCEPTION: "
          + methodName + " with arguments "
          + arguments + "\nand the full toString: " + stuff + "\nthe exception is: "
          + e.getMessage());*/
    }
}

我尝试了多种切入点表达方式，如bellow，但没有人工作：

@AfterThrowing(pointcut = "execution(* com.sware.SpringBoot_JPA_MySQL_Gradle_Project.services.*.*(..))", throwing = "e")
 @AfterThrowing(pointcut = "execution(* *.*(..))", throwing = "e")  // Application fails to start  throws some internal null pointer exception
 @AfterThrowing(pointcut = "execution(* com.sware.*.*.*.*(..))", throwing = "e")

我的班级代码：

  package com.sware.SpringBoot_JPA_MySQL_Gradle_Project.services;
    import java.util.ArrayList;
    import java.util.Collection;
    import java.util.Date;
    import java.util.List;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Service;
    import com.sware.SpringBoot_JPA_MySQL_Gradle_Project.domains.User;
    import com.sware.SpringBoot_JPA_MySQL_Gradle_Project.projections.UserWithFnameAndLname;
    import com.sware.SpringBoot_JPA_MySQL_Gradle_Project.repositories.UserRepository;

    @Service
    public class UserService {
        @Autowired
        UserRepository userRepository;
        public List<User> getAllUsers(){

             List<User> userList=new ArrayList<>();
            try {
                Integer n=10/0;
                userList=userRepository.findAll();

            } catch (Exception e) {
                System.out.println("Exception in UserRepostory:"+e.getMessage());
            }
            return userList;
        }
    }

虽然在运行时抛出了myAfterThrowing，但/by zero方法没有得到调用。谁能告诉我哪里出错了？

Answer 1

方法不会抛出任何异常。 “try-catch”块基本上吸收了异常。将"Integer n=10/0;"移到try-catch

之外

spring-boot- @AfterThrowing虽然抛出异常但没有执行建议方法？

1 个答案: