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Images in PDF files problem for ServletOutputStream

Sercio Narsever
Greenhorn

Joined: Dec 22, 2010
Posts: 2
Hi All,

I've searched a lot but could not solve this problem. I am generating PDF files with iText. If i use FileOutputStream everything is fine but when i try to use ServletOutputStream the images does not appear in PDF files.

When I open the PDF file with text editor, i saw that there "???" so much. That means something is shaving the bytes. It is like trying to use binary files with JSP. But i am using JSF, Tomcat 6.0, Spring 3.0 and Richfaces.

Here is the code that generates PDF with ServletOutputStream and causes problem


And here is the code works fine with FileOutputStream()


I could not find why the bytes are being shaved.

Thanks a lot for your help,
Sercio Narsever
Greenhorn

Joined: Dec 22, 2010
Posts: 2
Here is the solution that worked fine. Thanks to BalusC on stackoverflow.


When taking the response fully in your hands in JSF, you need to ensure that you call

response.reset();
before you set the headers, there is namely little chance that there's already something been set/written on the response (more than often by some sort of custom Filter).

You also need to ensure that you call

out.close();
instead of out.flush() to prevent that any other bytes will be written to the response body afterwards.

Finally, in JSF you need to call

FacesContext.getCurrentInstance().responseComplete();
to prevent that JSF will forward the request/response to a view (render the response).
 
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