从对象本身获取 AOP 代理 [英] Get AOP proxy from the object itself

问题描述

是否可以在 Spring 中获取给定对象的代理?我需要调用子类的函数.但是，很明显，当我直接调用时，这些方面没有被应用.举个例子:

Is possible to get the proxy of a given object in Spring? I need to call a function of a subclass. But, obviously, when I do a direct call, the aspects aren't applied. Here's an example:

public class Parent {

    public doSomething() {
        Parent proxyOfMe = Spring.getProxyOfMe(this); // (please)
        Method method = this.class.getMethod("sayHello");
        method.invoke(proxyOfMe);
    }
}

public class Child extends Parent {

    @Secured("president")
    public void sayHello() {
        System.out.println("Hello Mr. President");
    }
}

我找到了实现这一目标的方法.它有效，但我认为不是很优雅:

I've found a way of achieving this. It works, but I think is not very elegant:

public class Parent implements BeanNameAware {

    @Autowired private ApplicationContext applicationContext;
    private String beanName; // Getter

    public doSomething() {
        Parent proxyOfMe = applicationContext.getBean(beanName, Parent.class);
        Method method = this.class.getMethod("sayHello");
        method.invoke(proxyOfMe);
    }
}

推荐答案

这个 hack 非常尴尬，请考虑重构您的代码或使用 AspectJ 编织.您可能会感到受到警告，这是解决方案

This hack is extremely awkward, please consider refactoring your code or using AspectJ weaving. You may feel warned, here is the solution

AopContext.currentProxy()

JavaDoc.我在这里和这里.

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