404 error on dispatch

[Christofer Jennings]

I'm getting a 404 error when accessing a dispatch service. It's my first time using the @GenDispatch but I'm pretty sure I've done it right.  I already have one working LoginActionHandler which I hand made (LoginActionHandler). Anything look weird here? (THANKS!)

[WARN] 404 - POST /dispatch/FindUsers (127.0.0.1) 1404 bytes

   Request headers

      Host: 127.0.0.1:8888

      User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.2.13) Gecko/20101203 Firefox/3.6.13

      Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8

      Accept-Language: en-us,en;q=0.5

      Accept-Encoding: gzip,deflate

      Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7

      Keep-Alive: 115

      Connection: keep-alive

      Referer: http://127.0.0.1:8888/myapp.jsp?gwt.codesvr=127.0.0.1:9997

      Cookie: JSESSIONID=adjt4k0qdvua; MYCOOKIE=adjt4k0qdvua

      X-GWT-Permutation: HostedMode

      X-GWT-Module-Base: http://127.0.0.1:8888/myapp/

      Content-Type: text/x-gwt-rpc; charset=utf-8

      Content-Length: 275

      Pragma: no-cache

      Cache-Control: no-cache

   Response headers

      Content-Type: text/html; charset=iso-8859-1

      Content-Length: 1404

I've defined my action / response using the gen tool...

@GenDispatch

public class FindUsers {

@Out(1) List<User> users;

}

I have a Handler like this...

public class FindUsersActionHandler implements ActionHandler<FindUsersAction, FindUsersResult> {

@Override

public Class<FindUsersAction> getActionType() {

return FindUsersAction.class;

}

@Override

public FindUsersResult execute(FindUsersAction arg0,

ExecutionContext arg1) throws ActionException {

return new FindUsersResult(new ArrayList<User>());

}

@Override

public void undo(FindUsersAction action, FindUsersResult result,

ExecutionContext context) throws ActionException {

// Nothing to do.

}

} 

Here's my DispatchServerModule...

public class DispatchServletModule extends ServletModule {

@Override

public void configureServlets() {

filter("*.jsp").through(HttpSessionSecurityCookieFilter.class);

bindConstant().annotatedWith(SecurityCookie.class).to("MYCOOKIE");

serve("/" + ActionImpl.DEFAULT_SERVICE_NAME).with(DispatchServiceImpl.class);

}

}

And my ServerModule...

public class ServerModule extends HandlerModule {

@Override

protected void configureHandlers() {

bindHandler(LoginAction.class, LoginActionHandler.class);

bindHandler(FindUsersAction.class, FindUsersActionHandler.class);

bindHandler(AddUserAction.class, AddUserActionHandler.class);

}

}

And my  GuiceServletContextListener...

public class MyGuiceServletContextListener extends GuiceServletContextListener {

@Override

protected Injector getInjector() {

return Guice.createInjector(new ServerModule(), new DispatchServletModule());

}

}

I'm puzzled.

,boz

[Christofer Jennings]

I got my action handler to work for find-users by not using the gen-tool. The code updates are shown below. 

But I'd really like to use the gen-tool :-) and I'm still confused as to why id didn't work for me. It may be a missing dependency for the server-side code. I'll keep experimenting.

I've re-defined my action / response using by hand...

public class XFindUsersAction extends ActionImpl<XFindUsersResult>{

}

public class XFindUsersResult implements Result {

   private List<User> users;

   public XFindUsersResult(List<User> users) {

      this.users = users;

   }

   /** For GWT serialization only. */

   @SuppressWarnings("unused")

   private XFindUsersResult() {}

   public List<User> getUsers() {

      return users;

   }

      

}

The Handler became this...

public class FindUsersActionHandler implements ActionHandler<XFindUsersAction, XFindUsersResult> {

@Override

public Class<XFindUsersAction> getActionType() {

return XFindUsersAction.class;

}

@Override

public XFindUsersResult execute(XFindUsersAction action,

ExecutionContext context) throws ActionException {

System.out.println("FindUsersActionHandler.execute(...)");

return new XFindUsersResult(makeDummyUsers());

}

@Override

public void undo(XFindUsersAction action, XFindUsersResult result,

ExecutionContext context) throws ActionException {

// Nothing to do.

}

}

And my ServerModule using the hand-made XFindUsersAction...

public class ServerModule extends HandlerModule {

@Override

protected void configureHandlers() {

bindHandler(LoginAction.class, LoginActionHandler.class);

bindHandler(XFindUsersAction.class, FindUsersActionHandler.class);

bindHandler(AddUserAction.class, AddUserActionHandler.class);

}

}

I'm puzzled.

,boz

[Christofer Jennings]

GOT IT!!!

My DispatchServletModule was missing the "*" in the serve path!

It was ...

  serve("/" + ActionImpl.DEFAULT_SERVICE_NAME).with(DispatchServiceImpl.class);

It needed to be ...

  serve("/" + ActionImpl.DEFAULT_SERVICE_NAME + "*").with(DispatchServiceImpl.class);

The generated actions now get handled correctly.

Found the fix in the Hive project.

The link on the dispatcher wiki page goes to a version that is missing the "*" (http://code.google.com/p/gwt-platform/source/browse/gwtp-samples/gwtp-sample-basic/src/main/java/com/gwtplatform/samples/basic/server/DispatchServletModule.java)

Maybe it needs to be updated? I'm still too new to be sure.

Happy Camping

,boz

[Philippe Beaudoin]

Thanks, I've corrected it... and tried Google Code in-browser code
editor for the first time! Hopefully the CI server will let me know if
it fails. :)

Cheers,

Philippe