javaweb中去除某个get方式的参数，并且返回路径

 String requestURL = request.getRequestURL() + "";
             // String queryString = request.getQueryString();
             Enumeration<String> paraNames = request.getParameterNames();
             String queryparam = "";
             int tmp = 0;
             for (Enumeration e = paraNames; e.hasMoreElements();) {
                 String thisName = e.nextElement().toString();
                 if (StringUtils.isNotEmpty(thisName)
                         && !thisName.equals("code")) {
                     if (tmp == 0) {
                         queryparam = queryparam + thisName + "="
                                 + request.getParameter(thisName);
                     } else {
                         queryparam = queryparam + "&" + thisName + "="
                                 + request.getParameter(thisName);
                     }
                     tmp++;
                 }
             }
 requestURL = requestURI + "?" + queryparam;

获取参数参数值的方法是 request.getQuersyString();

关于getRequestURI与getRequestURL