Download dynamic file with GWT

Question

I have a GWT page where user enter data (start date, end date, etc.), then this data goes to the server via RPC call. On the server I want to generate Excel report with POI and

Answer 1

You can do that just using GWT RPC and Data URIs:

1. In your example, make your myMethod return the file content.
2. On the client side, format a Data URI with the file content received.
3. Use Window.open to open a file save dialog passing the formatted DataURI.

Take a look at this reference, to understand the Data URI usage:

Export to csv in jQuery