[jboss-user] [JBoss Portal] - Link for downalding a document PDF in a portlet

[khadijbal]

I want to make a link for telecharger file PDF, in a portlet, but that does not work, i have a error.
Here is my code in the portlet:
public void doView(RenderRequest req, RenderResponse rep)
  | 			throws PortletException, IOException {
  | 		String filename = (String) req.getParameter("filename");
  | 		
  | 	if (filename!=null) {
  | 			rep.setContentType("application/pdf");
  | File file= new File ("C://Documents and Settings/"+filename);
  | InputStream in = new FileInputStream(ff);
  | OutputStream outs = rep.getPortletOutputStream();			try {
  | 	int bit = in.read();
  |                while ((bit) >= 0) {
  | 	outs.write(bit);
  |             bit = in.read();
  | 		    	}
  | 		    } catch (Exception e) {
  | 		         e.printStackTrace(System.out);
  | 		    }
  | 		    outs.flush();
  | 		    outs.close();
  | 		    in.close();
  | 		}
  | 		}

i have this exception:
Cause: javax.portlet.PortletException: org.apache.jasper.JasperException: java.lang.IllegalStateException: The window output stream is already used 
Message: org.apache.jasper.JasperException: java.lang.IllegalStateException: The window output stream is already used 
StackTrace: 
javax.portlet.PortletException: org.apache.jasper.JasperException: java.lang.IllegalStateException: The window output stream is already used
	at org.jboss.portal.portlet.impl.jsr168.api.PortletRequestDispatcherImpl.include(PortletRequestDispatcherImpl.java:91)
	at portal.portlets.PListeFormation.doView(Unknown Source)
	at javax.portlet.GenericPortlet.doDispatch(GenericPortlet.java:133)
	at javax.portlet.GenericPortlet.render(GenericPortlet.java:306)


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