Hi Manvel, I dont see anything related to Channel in your code. Channel API is only for sending Message from SERVER TO CLIENT.... http://code.google.com/appengine/docs/java/channel/
Ravi. On Fri, Apr 29, 2011 at 11:50 AM, Manvel Saroyan <[email protected]> wrote: > Thank you Ravi Sharma for your fast answer. > I already was suggested to use this style: > // Add an event handler to the form. > form.addFormHandler(new FormHandler() { > public void onSubmit(FormSubmitEvent event) { > // This event is fired just before the form is submitted. We > can take > // this opportunity to perform validation. > if (tb.getText().length() == 0) { > Window.alert("The text box must not be empty"); > event.setCancelled(true); > } > } > > public void onSubmitComplete(FormSubmitCompleteEvent event) { > // When the form submission is successfully completed, this > event is > // fired. Assuming the service returned a response of type > text/html, > // we can get the result text here (see the FormPanel > documentation for > // further explanation). > Window.alert(event.getResults()); > } > }); > > And now my application works ok... > But I'm having problem of sending responses from server. For example > if I want to tell my application that the file is too big please send > the image that is not bigger than 1mb. > I get something like: > > > <h2>HTTP ERROR 500</h2> > <p>Problem accessing /officemanagerver1/upload. Reason: > </p><pre> Expected a redirect, tried to write content instead.</ > pre><p></p><hr><i><small>Powered by Jetty://</small></i><br> > <br> > <br> > <br> > <br> > <br> > <br> > <br> > <br> > <br> > <br> > <br> > <br> > <br> > <br> > <br> > <br> > <br> > <br> > <br> > [2:20:18 PM AMST] Manvel Saroyan: Here is how I'm tring to send > information from server : > res.setContentType("text/plain"); > res.getWriter().write("Hello, world"); > > -- > You received this message because you are subscribed to the Google Groups > "Google App Engine for Java" group. > To post to this group, send email to > [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group at > http://groups.google.com/group/google-appengine-java?hl=en. > > -- You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
