I'm exporting a canvas content as String to a servlet, to generate 
downloadable file. But the resulting file is not viewable. What could I be 
missing

Send to servlet:
String content = canvas.toDataUrl("image/png");

Servlet handling:
response.setHeader("Content-Disposition", "attachment; 
filename=\"myfile.png\"")
response.setContentType("image/png");

outputStream.write(..);


I can see the downloaded image starts like this:
data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAABi...

Maybe this is a problem? But removing "data:image/png" or "base64" or both, 
it neither can be viewed.



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