<form enctype="multipart/form-data" action="doupload" method='post'>

    private  String DecodeParam(String s1, HttpServletRequest rq, String DefSrcEnc, String DefDstEnc)  throws  UnsupportedEncodingException {
        String requestEnc = rq.getCharacterEncoding();
         if ( requestEnc== null  ) requestEnc=DefSrcEnc;
        String clientEnc = rq.getParameter("charset");
         if ( clientEnc== null  ) clientEnc=DefDstEnc;
         return   new  String(s1.getBytes(requestEnc),clientEnc);
    }

     protected   void  processRequest(HttpServletRequest request, HttpServletResponse response)
     throws  ServletException, IOException {
        request.setCharacterEncoding("ISO-8859-1");
        response.setContentType("text/html;charset=UTF-8");
...
        String val2 = DecodeParam(value,request,"ISO-8859-1","UTF-8");
...
}