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全部,

虽然这与另一篇文章类似,但该文章(没有说明如何在不实例化对象的情况下执行此操作(如果可以的话)。此外,我尝试了多种主题变体,但均未成功:

class[method](arg)
class[method].call(arg)
method.apply(class, arg)

我是 Flex 的新手,但在 C# 和 Java 中都使用过反射。顺便说一句,我试图在 Flex 中工作的代码在这两种语言中都有镜像,并且可以按预期工作。

任何帮助表示赞赏,谢谢,托德

无效的弹性代码:

    private function ipMethodTester( ipMethodName:String,
             shouldPass:Array, shouldFail:Array):void
    {
        var message:String;
        var entry:String;
        for each(entry in shouldPass)
        {
            message = ipMethodName + ": " + entry + " should pass";
            try
            {
                Assert.assertTrue(message,
                    FieldValidator[ipMethodName](entry));
            }
            catch(e:Error)
            {
               Assert.fail(e.message + " " + message);
            }
        }
        for each(entry in shouldFail)
        {
            message = ipMethodName + ": " + entry + " should fail";
            try
            {
                Assert.assertFalse(message,
                    FieldValidator[ipMethodName](entry));
            }
            catch(e:Error)
            {
               Assert.fail(e.message + " " + message);
            }
        }
    }

Java 代码:

private void ipMethodTester(final String ipMethodName,
         final String[] shouldPass, final String[] shouldFail)
{
   Method method;
   try
   {
      method = InetUtil.class.getDeclaredMethod(ipMethodName, String.class);
      method.setAccessible(true);

      for(String entry : shouldPass)
      {
         Object[] invokeArgs = { entry };
         boolean passed = (Boolean)method.invoke(null, invokeArgs);

         assertTrue(ipMethodName + ": " + entry + " should pass", passed);
      }

      for(String entry : shouldFail)
      {
         Object[] invokeArgs = { entry };
         boolean passed = (Boolean)method.invoke(null, invokeArgs);

         assertFalse(ipMethodName + ": " + entry + " should fail", passed);
      }
  }
  catch (final Exception e)
  {
     fail(e.getClass().toString());
  }
}

C#代码:

    private void ipMethodTester(string ipMethodName, string[] shouldPass, string[] shouldFail)
    {
        Type type = typeof (ValidateUtil);
        BindingFlags bindingFlags = BindingFlags.InvokeMethod
            | BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Static;

        MethodInfo method = type.GetMethod(ipMethodName, bindingFlags);

        foreach(string entry in shouldPass)
        {
            object[] invokeArgs = { entry };
            bool passed = (bool)method.Invoke(null, invokeArgs);

            Assert.IsTrue(passed, ipMethodName + ": " + entry + " should pass");
        }

        foreach(string entry in shouldFail)
        {
            object[] invokeArgs = { entry };
            bool passed = (bool)method.Invoke(null, invokeArgs);

            Assert.IsFalse(passed, ipMethodName + ": " + entry + " should fail");
        }
    }
4

1 回答 1

1

这对我有用:

MyClass['myMethod']('arg1','arg2');

这也有效:

MyClass['myMethod'].call(MyClass, 'arg1', 'arg2');

注意:'call' 方法(在本例中为 MyClass)的第一个参数仅指定在函数内使用 'this' 关键字时引用的对象。

于 2010-09-30T19:04:02.887 回答