Save Dialog in JSF Portlet

[Pallavi Roy]

Hi All,
I have a JSF portlet where i want to save the contents of my Text area on the click of a button to a word document.(IBM Websphere portal) <h:inputTextarea id="text1" value="#{pc_TextAreaView.textAreaValue}" rows="10" cols="50" />
<h:commandButton id="save" value="Save As Word" action="#{pc_TextAreaView.SaveAsWord}"/>

In my page bean i have written the follwoing code but the response.setHeader() doesn't seem to work.I am not getting any pop dialog and i cannot save my file.
Please help me to get this thing work.

  
public String SaveAsWord() {
 
 FacesContext context = FacesContext.getCurrentInstance();
 HttpServletResponse response = (HttpServletResponse)context.getExternalContext().getResponse();
 String filen = "default.doc";
 try{
 response.setContentType("application/vnd.ms-word");
 response.setHeader( "content-disposition","attachment;name=\""+filen+"\";filename=\""+filen+"\""); 
 response.setHeader("Cache-Control", "no-cache");
     
      byte[] buf=new byte[4*1024];
      InputStream inStream=new ByteArrayInputStream(textAreaValue.getBytes());
      OutputStream outStream=response.getOutputStream();
      int sizeRead;
      while ( ( sizeRead=inStream.read(buf, 0, buf.length) ) != -1 )
      {
      outStream.write(buf, 0, sizeRead);
      }
      inStream.close();
      outStream.close(); 
      context.responseComplete();
  }
      catch(IOException ex){ ex.printStackTrace();}
      return null;
  }
 
    }  

[ November 21, 2006: Message edited by: Pallavi Roy ]