It's possible through a data URI with faking a click on a download
anchor:
http://stackoverflow.com/questions/3665115/create-a-file-in-memory-for-user-to-download-not-through-server
On Monday, March 21, 2016 at 7:53:45 PM UTC-5, Velusamy Velu wrote:
>
> Thanks for this discussion, I'm able to resolve one of the issues I was
> running in to. Now I have '*A*' solution if not the most perfect one.
>
> The use I have is -
>
> 1. User creates a drawing on HTML5 canvas.
> 2. Drawing is converted to SVG on the browser.
> 3. User wants to save the drawing as SVG file.
> 4. However, I'm not sure a way exists the to save the SVG directly
> from the browser.
> 5. So the string representing SVG is sent to the server.
> 6. Server creates a name for the SVG.
> 7. And sends the SVG back to the browser.
> 8. The browser instantly saves the file with the name assigned by the
> browser.
>
> That's really good, but I'm sure there has to be a way to save the SVG
> created by the JS code without making a round trip to server. Has any one
> have the know how?
>
> Thanks
> Velu
>
> On Tuesday, October 19, 2010 at 11:49:12 PM UTC-4, mike b wrote:
>>
>> I have read all the other posts about downloading Excel files and how
>> to do it w/ an IFRAME, with RequestBuilder, and Window.open().
>> However, none of them actually work. Luckily, I have a working
>> servlet which executes and returns successfully with javascript.
>> However, we'd like to do it all in GWT. The error message from IE is
>> below. The Window.open() DOES work with FF, but not with IE.
>> Unfortunately, we must deploy to IE, no options there.
>>
>> Situation:
>> GWT 2.0.4 mvp4g 1.2.0
>> Need to download a file to open in Excel. At this point, its actually
>> a text file, but the MIME type is setup for Excel.
>>
>> The servlet has been tested w/ straight java script using
>> "document.body.appendChild(iframe);". This works like a champ in IE
>> and FF.
>>
>> However, when I do "Window.open(url, "_self",null);" in GWT, IE can't
>> download the file. It throws an error saying...
>>
>> "
>> Internet Exploroer cannot download MyFile from localhost
>>
>> IE was not able to open this Internet site. The requests site is
>> either unavailable or cannot be found. Please try again later.
>> "
>>
>> In GWT, I have also tried just using a Frame, adding it to a Panel,
>> and then calling myFrame.setUrl("myUrl");
>>
>> This also successfully gets to the servlet, but fails w/ the above
>> error message while trying to "open" the file.
>>
>> It seems as if GWT is telling the browser to cancel the download when
>> it pops up.
>>
>> Any suggestions? Any guesses?
>>
>> Thanks,
>> mikeb
>
>
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