On Monday, May 28, 2012 5:26:57 PM UTC+2, Akis wrote: > > Hi guys. I've got a question for you: > > i need to create a web app which, starting from an input string given > by the user through the browser, generates a file that has to be > downloaded by the user self. > > My approach would be the following: the input string is sent by a RPC > to a server-side class that creates the file from the given string, > and then the file is sent to the client-side, ready to be downloaded. > > Now, in "classic servlet way", i would use a HttpServetResponse to set > the header, the content type, and attach the file... how can i do this > with GWT? >
"With GWT", yes; but not with GWT-RPC (just like you couldn't do it with SOAP WebServices // granted, you can use a SOAP extension to attach files to SOAP messages, but still). Either you use GWT-RPC and then the server has to generate the file on a temporary storage (could be in-memory / in-session) and sends an URL back to the client, and then the client can download that file at the given URL. Or you use a FormPanel to communicate with the server. The first method works best if the generated file could be displayed in the browser (right away or using a plugin; such as plain text, PDF, MS Word, etc.), so I'd recommend it over the FormPanel, despite being more complex (temporary storage has to be cleaned-up, otherwise it's not temporary) -- You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. To view this discussion on the web visit https://groups.google.com/d/msg/google-web-toolkit/-/HcI32qldhh0J. 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-web-toolkit?hl=en.
