T5: Now to generate page with binary output

[Dmitry Shyshkin]

Hello, all

I want to generate image by tapestry page. Follow code successfully set 
Content-Type and output image data, but after that  exception is thrown :
java.lang.RuntimeException: Page resource/Image did not generate any 
markup when rendered. This could be because its template file could not 
be located, or because a render phase method in the page prevented 
rendering.

Is there is a way to tell tapestry that page output is binary and 
ResposeWriter won't be used for generation? I've thought about 
StreamResponse but it accepted only from action events, not from render 
phase events.

   @Inject
   private Response _response;

   @BeginRender
   void render() throws IOException {
       Image image = ...;
       IOUtil.transfer(image.getImage().getBinaryStream(), 
_response.getOutputStream(image.getContentType()));
   }


Thanks,
Dmitry


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