Response inline (at the risk of confusing people by making them search
for one line responses within your prev message):
On Tue, 08 Mar 2005 19:24:50 -0500, Frank W. Zammetti
<[EMAIL PROTECTED]> wrote:
> Odd... Here's an interesting observation... If you look at the code I
> just posted that DID work, it is interesting that in order for it to
> work, the request object MUST be fully-qualified in the forName() call.
Yup, or else it won't know which class you mean. You can also use
HttpServletRequest.class.
> Also, I tried replacing that single line with:
>
> pTypes[0] = request.getClass();
>
> ...which by all rights should work, but no, it doesn't (which is
> basically all beanutils is doing).
getClass() returns the runtime class, which would be the
implementation of the HttpServletRequest interface that your container
is using.
>
> It seems that beanutils, and more generically the getClass() method,
> isn't returning the proper type... or something (in my best Butthead
> voice)...
Method.invoke doesn't try to find a matching method by looking at
method signatures that are compatible with the supplied parameter
classes.
In the sample I gave earlier, I tried these:
try {
Method m = SampleClass.class.getMethod("method",new Class[] {Object.class});
m.invoke(sc, new Object[] {s});
} catch (NoSuchMethodException e) {
System.out.println("Can't find method.");
}
try {
Method m = SampleClass.class.getMethod("method",new Class[] {String.class});
m.invoke(sc, new Object[] {s});
} catch (NoSuchMethodException e) {
System.out.println("Can't find method.");
}
The first one matched, the second one didn't.
If you still want to use MethodUtils, try the invokeMethod()
variation. Going back to my SampleClass,
"MethodUtils.invokeExactMethod(sc, "method", s);" fails but
"MethodUtils.invokeMethod(sc, "method", s);" succeeds.
hth,
Hubert
>
> Hubert Rabago wrote:
> > Your guess matches mine.
> > It seems invokeExactMethod() uses getClass() to determine the argument
> > types, so for your call, it'll use the actual (runtime) class of your
> > request object, and it won't find setupMethod1 which declares
> > HttpServletRequest.
> >
> > I wrote a quick test:
> > public class SampleClass {
> >
> > public void method(Object a) {
> > System.out.println("inside method() where a=" + a);
> > }
> >
> > public static void main(String[] args)
> > throws Exception {
> > SampleClass sc = new SampleClass();
> > String s = "hello";
> > MethodUtils.invokeExactMethod(sc, "method",
> > new Object[] {s}, new Class[] {Object.class});
> > MethodUtils.invokeExactMethod(sc, "method", s);
> > }
> > }
> >
> > The first call ran fine, the second failed. This seems to match the
> > problem you're seeing.
> >
> > Hubert
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
