用于构造函数调用的AspectJ Pointcut [英] AspectJ Pointcut for constructor invocation

问题描述

我正在尝试编写一条建议，以使用自定义注释来拦截对类的构造函数的调用:

I am trying to write an advice to intercept the calls to constructors of a class with my custom annotation:

@MyCustomAnnotation
public class SomeClass {

   public SomeClass(Foo a, Bar b){
      ...
   }

   public SomeClass(Foo a){
      this(a, null);
   }

}

我通常看到一个如何拦截构造函数调用的示例:

I see an example of how to intercept constructor calls, in general:

@Before("execution(*.new(..))")

我如何更新它以仅对使用我的 @MyCustomAnnotation 批注进行批注的类执行

How do I update this to only execute for classes that are annotated with my @MyCustomAnnotation annotation

推荐答案

我将其用于方法调用:

within(@MyCustomAnnotation *)

因此，最终的方面代码将是:

So, the resulting aspect code would be:

@Before("execution(*.new(..)) && within(@MyCustomAnnotation *)")

或者，尝试以下操作:

@Pointcut("execution(@MyCustomAnnotation *.new(..))")

我在这里指的是文档: https://blog.espenberntsen.net/2010/03/20/aspectj-cheat-sheet/

I am referring to the documentation here: https://blog.espenberntsen.net/2010/03/20/aspectj-cheat-sheet/

而且，它应该在理论上可行，但是我没有任何运气.

and, it should work in theory, but I am not having any luck.

这篇关于用于构造函数调用的AspectJ Pointcut的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！