querystring = querystring + "&" + key + "=" + value;
querystring = querystring + "&" + key + "=" + URLEncoder.encode(value, Constants.DEFAULT_ENCODING);
    public String buildHTTPQuery(HttpServletRequest request)    {        String querystring = "";        HashMap queryHash = buildQueryHash(request);        Iterator i = queryHash.keySet().iterator();        while (i.hasNext())        {            String key = (String) i.next();            String value = (String) queryHash.get(key);            querystring = querystring + "&" + key + "=" + value;        }        return (querystring);    }