AspectJ :查找找到的 JoinPoint 的源方法代码/名称 [英] AspectJ : Find the source method code/name of a found JoinPoint

问题描述

我想检索调用特定方法的调用方法.
示例:
我考虑的方法:

public void methodA(int a, int b){...}

在测试方法和程序本身中调用

@Testpublic void testMethodA(...一些代码...objectClassA.methodA(x,y);)}B类{...公共无效方法B(){objectClassA.methodA(x,y);}}

我想以某种方式获得的是testMethodA和methodB的内部或至少是签名

要做到这一点，我认为 AspectJ 可以帮助我，所以我研究了一下，最后写了这个切入点
pointcut pcmethodA(): execution(* A.methodA(..) );

我的建议看起来像这样

before(): pcmethodA() {System.out.println("[AspectJ] 进入" + thisJoinPoint);System.out.println("[AspectJ] 签名" + thisJoinPoint.getSignature());System.out.println("[AspectJ] SourceLocation "+ thisJoinPoint.getSourceLocation());

但这会返回

[AspectJ] 进入执行(void com.example.somePackage.A.methodA(int, int)[AspectJ] 签名 com.example.somePackage.A.methodA(int, int)[AspectJ] SourceLocation A.java:25/** 文件中methodA的行号**/

这是我第一次使用 AspectJ ，有什么对象或方法可以检索我找到的连接点的调用方法吗?testMethodA 和 methodB

谢谢

解决方案

让我先用几个示例类 + 驱动程序应用重新创建您的情况:

package de.scrum_master.app;公共类 Foo {public void methodA(int a, int b) {System.out.println("methodA:" + a + ", " + b);}}

package de.scrum_master.app;公共类 DummyTest {公共无效 testSomething() {新 Foo().methodA(33, 44);}}

package de.scrum_master.app;公共类应用{公共无效doSomething(){新 Foo().methodA(11, 22);}公共静态无效主(字符串 [] args){新应用程序().doSomething();new DummyTest().testSomething();}}

现在在您的方面尝试将 call() 与 thisEnclosureJoinPointStaticPart 结合使用:

package de.scrum_master.aspect;导入 de.scrum_master.app.Foo;公共方面 MyAspect {切入点 pcmethodA() : call(* Foo.methodA(..));之前():pcmethodA(){System.out.println("[AspectJ] 正在执行:" + thisJoinPoint);System.out.println("[AspectJ] 调用者:" + thisEnclosureJoinPointStaticPart);}}

运行Application时的控制台日志:

[AspectJ] 执行:call(void de.scrum_master.app.Foo.methodA(int, int))[AspectJ] 调用者: execution(void de.scrum_master.app.Application.doSomething())方法A:11、22[AspectJ] 执行:call(void de.scrum_master.app.Foo.methodA(int, int))[AspectJ] 调用者: execution(void de.scrum_master.app.DummyTest.testSomething())方法A:33, 44

看到了吗?如果您只想确定调用方和被调用方，则无需处理堆栈跟踪.

I want to retrieve the calling method where a specific method is called.
Example :
The method I consider :

public void methodA(int a, int b){...}

is called in a test method and also in the program itself

@Test
public void testMethodA(
... some code...
objectClassA.methodA(x,y);
)}

Class B {
...
 public void methodB(){
    objectClassA.methodA(x,y);
   }
}

What I want to obtain somehow is the inside or at least the signature of testMethodA and methodB

To do that I thought AspectJ could help me, so I looked into that and ended up writing this poincut
pointcut pcmethodA(): execution(* A.methodA(..) );

and my advice looked something like this

before(): pcmethodA() {
        System.out.println("[AspectJ] Entering " + thisJoinPoint);
        System.out.println("[AspectJ] Signature " + thisJoinPoint.getSignature());
        System.out.println("[AspectJ] SourceLocation "+ thisJoinPoint.getSourceLocation());

But this returns

[AspectJ] Entering execution(void com.example.somePackage.A.methodA(int, int)
[AspectJ] Signature com.example.somePackage.A.methodA(int, int)
[AspectJ] SourceLocation A.java:25   /** Line number of the methodA in the file **/

It is my first time using AspectJ , is there any object or way to retreive the calling method of my found joinpoints? testMethodA and methodB

Thanks

解决方案

Let me recreate your situation first with a few sample classes + driver application:

package de.scrum_master.app;

public class Foo {
  public void methodA(int a, int b) {
    System.out.println("methodA: " + a + ", " + b);
  }
}

package de.scrum_master.app;

public class DummyTest {
  public void testSomething() {
    new Foo().methodA(33, 44);
  }
}

package de.scrum_master.app;

public class Application {
  public void doSomething() {
    new Foo().methodA(11, 22);
  }

  public static void main(String[] args) {
    new Application().doSomething();
    new DummyTest().testSomething();
  }
}

Now try call() in combination with thisEnclosingJoinPointStaticPart in your aspect:

package de.scrum_master.aspect;

import de.scrum_master.app.Foo;

public aspect MyAspect {
  pointcut pcmethodA() : call(* Foo.methodA(..));

  before() : pcmethodA() {
    System.out.println("[AspectJ] Executing: " + thisJoinPoint);
    System.out.println("[AspectJ] Called by: " + thisEnclosingJoinPointStaticPart);
  }
}

The console log when running Application:

[AspectJ] Executing: call(void de.scrum_master.app.Foo.methodA(int, int))
[AspectJ] Called by: execution(void de.scrum_master.app.Application.doSomething())
methodA: 11, 22
[AspectJ] Executing: call(void de.scrum_master.app.Foo.methodA(int, int))
[AspectJ] Called by: execution(void de.scrum_master.app.DummyTest.testSomething())
methodA: 33, 44

See? No need to juggle stack traces if you just want to determine caller and callee.

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