AspectJ匹配返回类型作为泛型接口

Question

我正在尝试创建一个AspectJ Aspect来拦截具有通用接口的返回方法。

这是我的AspectJ

@AspectJ
public class MyAspect {
    @AfterReturning("execution(java.util.Collection+<mypackage.MyAbstractEntity+> mypackage.mvc.controllers..*.*(..))", returning = "list")
    public doStuff(JoinPoint j, Collection<MyAbstractEntity> list) {
    }
}

这是我想要插入的类:

package mypackage.mvc.controller;
public class MyController {
    // MyEntity extends MyAbstractEntity
    public List<MyEntity> findAll() {
    }
}

我做错了什么?

Answer 1

解决!

在泛型定义后加上"加号"("加号"表示"扩展它的类"):

java.util.Collection<mypackage.MyAbstractEntity+>+

并将"list"缩写为"?"延伸":

public doStuff(JoinPoint j, Collection<? extends MyAbstractEntity> list) {

代码看起来像这样:

@AspectJ
public class MyAspect {
    @AfterReturning("execution(java.util.Collection<mypackage.MyAbstractEntity+>+ mypackage.mvc.controllers..*.*(..))", returning = "list")
    public doStuff(JoinPoint j, Collection<MyAbstractEntity> list) {
    }
}