AOP没有触发自定义注解。

huangapple
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英文:

AOP Isn't hitting the custom annotation

问题

我基本上试图创建一个注解，用于提供任何方法的执行时间。在运行以下代码时，我不确定它是否触发了该方法。此外，IntelliJ 建议“advice advises no method”。

这是我想要它执行的操作 -

  1. import lombok.extern.slf4j.Slf4j;
  2. import org.aspectj.lang.ProceedingJoinPoint;
  3. import org.aspectj.lang.annotation.Around;
  4. import org.aspectj.lang.annotation.Aspect;
  5. import org.springframework.boot.autoconfigure.condition.ConditionalOnExpression;
  6. import org.springframework.stereotype.Component;
  8. @Aspect
  9. @Component
  10. @Slf4j
  11. @ConditionalOnExpression("${aspect.enabled:true}")
  12. public class ExecutionTimeTracker {
  13.     @Around(value = "@annotation(TrackExecutionTime)")
  14.     public Object executionTime(ProceedingJoinPoint point) throws Throwable {
  15.         long startTime = System.currentTimeMillis();
  16.         Object object = point.proceed();
  17.         long endTime = System.currentTimeMillis();
  18.         log.info(point.getSignature().getDeclaringTypeName() +
  19.                 "." + point.getSignature().getName() +
  20.                 " >> Took : " + (endTime - startTime) + "mills");
  21.         return object;
  22.     }
  23. }

这是我的 @interface

  1. import java.lang.annotation.Retention;
  2. import java.lang.annotation.Target;
  4. import static java.lang.annotation.ElementType.METHOD;
  5. import static java.lang.annotation.RetentionPolicy.RUNTIME;
  7. @Target({ METHOD })
  8. @Retention(RUNTIME)
  9. public @interface TrackExecutionTime {
  10. }

这是用于测试的单元测试 -

  1. import org.junit.jupiter.api.Test;
  3. public class ExecutionTimeTrackerTest {
  5.     @Test
  6.     @TrackExecutionTime
  7.     public void someMethod(){
  8.         int[] randomNumbers = {582, 15, 596, 827, 779, 426, 153, 557, 394, 12};
  9.         Arrays.sort(randomNumbers);
  10.         int index = Arrays.binarySearch(randomNumbers, 827);
  11.         Assertions.assertEquals(9, index);
  12.     }
  13. }

我尝试过将 @Around(value = "@annotation(TrackExecutionTime)") 更改为不同的位置，并尝试使用不同的日志级别设置来执行，但似乎没有任何效果。

英文:

I am basically trying to create an annotation that provides me the execution time of any method. While running the following code, I am not sure if it is hitting the method. Also, intelliJ suggests that "advice advises no method".

This is what I want it to do -

  2. import lombok.extern.slf4j.Slf4j;
  3. import org.aspectj.lang.ProceedingJoinPoint;
  4. import org.aspectj.lang.annotation.Around;
  5. import org.aspectj.lang.annotation.Aspect;
  6. import org.springframework.boot.autoconfigure.condition.ConditionalOnExpression;
  7. import org.springframework.stereotype.Component;
  9. @Aspect
  10. @Component
  11. @Slf4j
  12. @ConditionalOnExpression("${aspect.enabled:true}")
  13. public class ExecutionTimeTracker {
  14.     @Around(value = "@annotation(TrackExecutionTime)")
  15.     public Object executionTime(ProceedingJoinPoint point) throws Throwable {
  16.         long startTime = System.currentTimeMillis();
  17.         Object object = point.proceed();
  18.         long endtime = System.currentTimeMillis();
  19.         log.info(point.getSignature().getDeclaringTypeName() +
  20.                 "." + point.getSignature().getName() +
  21.                 " >> Took : " + (endtime - startTime) + "mills");
  22.         return object;
  23.     }
  25. }

This is my @interface

  2. import java.lang.annotation.Retention;
  3. import java.lang.annotation.Target;
  5. import static java.lang.annotation.ElementType.METHOD;
  6. import static java.lang.annotation.RetentionPolicy.RUNTIME;
  8. @Target({ METHOD })
  9. @Retention(RUNTIME)
  10. public @interface TrackExecutionTime {
  11. }

This is the UT to test this -

  1. import org.junit.jupiter.api.Test;
  3. public class ExecutionTimeTrackerTest {
  5.     @Test
  6.     @TrackExecutionTime
  7.     public void someMethod(){
  8.         int[] randomNumbers = {582, 15, 596, 827, 779, 426, 153, 557, 394, 12};
  9.         Arrays.sort(randomNumbers);
  10.         int index = Arrays.binarySearch(randomNumbers, 827);
  11.         Assertions.assertEquals(9, index);
  13.     }
  14. }

I tried changing @Around(value = "@annotation(TrackExecutionTime)") to different locations, tried executing with setting up different log levels too. Nothing seem to work.

答案1

得分: 1

问题在于方面由Spring管理，而您的测试中没有使用Spring。您需要创建一个Spring Boot集成测试才能使其工作。

例如：假设您有以下服务：

  1. @Service
  2. class MyService {
  3.     @TrackExecutionTime
  4.     public void doSomething() {
  5.         // 只是浪费一些时间，假装在做一些有用的事情
  6.         for (int i = 0; i < 100_000; i++) {
  7.             Math.sqrt(1000);
  8.         }
  9.         System.out.println("Hello, world");
  10.     }
  11. }

然后，您需要以下集成测试（实际上有点无意义，但只是为了向您展示它的工作原理）：

  1. @SpringBootTest
  2. @RunWith(SpringRunner.class)
  3. public class IntegrationTest {
  5.     @Autowired
  6.     MyService myService;
  8.     @Test
  9.     public void testAspect() {
  10.         myService.doSomething();
  11.     }
  12. }

然后，您将在控制台中看到方面被使用：

  1. Hello, world
  2. com.example.MyService.doSomething >> Took : 31mills
英文:

The problem is that the aspect is managed by Spring and you're not using Spring in your test. You need to create a Spring Boot integration test for this to work.

Example: imagine you have this service

  1. @Service
  2. class MyService {
  3.     @TrackExecutionTime
  4.     public void doSomething() {
  5.         // just waste some time pretending to do something useful
  6.         for (int i = 0; i < 100_000; i++) {
  7.             Math.sqrt(1000);
  8.         }
  9.         System.out.println("Hello, world");
  10.     }
  11. }

then you need the following integration test (a bit of a pointless test to be honest, but it's just to show you how it works):

  1. @SpringBootTest
  2. @RunWith(SpringRunner.class)
  3. public class IntegrationTest {
  5.     @Autowired
  6.     MyService myService;
  8.     @Test
  9.     public void testAspect() {
  10.         
  11.         myService.doSomething();
  12.     }
  13. }

then you'll see that the aspect is used in your console:

  1. Hello, world
  2. com.example.MyService.doSomething >> Took : 31mills

huangapple
  • 本文由 发表于 2023年8月10日 17:30:57
  • 转载请务必保留本文链接：https://go.coder-hub.com/76874424.html
  • annotations
  • java
  • spring
  • spring-aop
  • spring-boot
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