GWT FileUpload - Servlet options and handling response

[Ashish]

I am new to GWT and am trying to implement a file upload
functionality. Found some implementation help over the internet and
used that as reference. But have some questions related to that:

The actual upload or writing the contents of file on server(or disk)
will be done by a servlet. Is it necessary that this servlet (say
MyFileUploadServlet) extends HttpServlet? OR
I can use RemoteServiceServlet or any other servlet or implement any
other interface? If yes, which method do I need to implement/override?

In my servlet, after everything is done, I need to return back the
response back to the client. I think form.addSubmitCompleteHandler()
can be used to achieve that. From servlet, I could return text/html
(or String type object) and then use SubmitCompleteEvent.getResults()
to get the result.
Question is that can I use my custom object instead of String (lets
say MyFileUploadResult), populate the results in it and then pass it
back to client? or can I get back JSON object?

Currently, after getting back the response and using
SubmitCompleteEvent.getResults(), I am getting some HTML tags added to
the actual response such as :

pre> Image upload successfully /pre> .

Is there a way to get rid of that?

Thanks a lot in advance!

Regards,

Ashish

[Jim Douglas]

Search for fileupload in this group; there are several posts that discuss the subject.

[Andrea Boscolo]

Check out the http://code.google.com/p/gwtupload/ project. Easy to use and extend.

[kim young ill]

yes, set response-type to text/html would help

 

Thanks a lot in advance!

Regards,

Ashish

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[learning coding]

Hi Ashish.

 

Even i wan t to upload file on server and send back to client.

 

I found the follwing link which is working fine.

 

http://stackoverflow.com/a/1111606/780393

 

Regards