Question

Actually to overcome the issue of primefaces with fileuploader when STATE_SAVING_METHOD=client. I thought to make use of BalusC code as we use Servlet 3.0 posted here. The problem I am facing is when I click the submit button, I received an ajax partial reponse like this

  <?xml version="1.0" encoding="UTF-8" ?>
  <partial-response>
    <changes>
     <update id="javax.faces.ViewState">
      <![CDATA[somejunk]]> 
     </update>
    </changes>
   <extension primefacesCallbackParam="validationFailed">{"validationFailed":false}</extension> 

It never calls the decode method in FileRenderer.java. If I remove the enctype, it was calling decode method and obviously failing to cast to MultipartRequest on line:

 File file = ((MultipartRequest) context.getExternalContext().getRequest()).getFile(clientId);

Libraries:
PF 2.2.1
JSF 2.0.9

Answer 1

Though I switched from STATE_SAVING_METHOD=server to client. I forgot to remove the org.primefaces.webapp.filter.FileUploadFilter in my web.xml. So the Primefaces FileUploadFilter was responding with a partial ajax response everytime. I removed it and it is working fine now.

@BalusC, Thanks for your wonderful code!