使用invokemethod在groovy中动态实现接口

Groovy为处理和实现Java接口提供了一些非常整洁的语言特性,但我似乎有点被卡住了。

我想在一个groovy类上动态实现一个接口,并使用groovyinterceptable.invokeMethod拦截该接口上的所有方法调用。以下是我迄今为止的尝试:

public interface TestInterface
{
    public void doBla();
    public String hello(String world);
}


import groovy.lang.GroovyInterceptable;

class GormInterfaceDispatcher implements GroovyInterceptable
{
    def invokeMethod(String name, args) {
        System.out.println ("Beginning $name with $args")
        def metaMethod = metaClass.getMetaMethod(name, args)
        def result = null
        if(!metaMethod)
        {
            // Do something cool here with the method call

        }
        else
            result = metaMethod.invoke(this, args)
        System.out.println ("Completed $name")
        return result
    }

    TestInterface getFromClosure()
    {
        // This works, but how do I get the method name from here?
        // I find that even more elegant than using invokeMethod
        return { Object[] args -> System.out.println "An unknown method called with $args" }.asType(TestInterface.class)
    }


    TestInterface getThisAsInterface()
    {
        // I'm using asType because I won't know the interfaces
        // This returns null
        return this.asType(TestInterface.class)
    }

    public static void main(String[] args)
    {
        def gid = new GormInterfaceDispatcher()
        TestInterface ti = gid.getFromClosure()
        assert ti != null
        ti.doBla() // Works
        TestInterface ti2 = gid.getThisAsInterface()
        assert ti2 != null // Assertion failed
        ti2.doBla()
    }
}

返回闭包很好,但我找不到一种方法来找出在那里调用的方法的名称。

尝试对此引用本身进行代理(以便方法调用将调用InvokeMethod)时返回空值。