public void doGet(HttpServletRequest request, HttpServletResponse response) 
   throws ServletException, IOException { 

Map map = new HashMap(); 
   Enumeration paramNames = request.getParameterNames(); 
  while (paramNames.hasMoreElements()) { 
   String paramName = (String) paramNames.nextElement(); 
 
   String[] paramValues = request.getParameterValues(paramName); 
   if (paramValues.length == 1) { 
    String paramValue = paramValues[0]; 
    if (paramValue.length() != 0) { 
     System.out.println("参数：" + paramName + "=" + paramValue); 
     map.put(paramName, paramValue); 
    } 
   } 
  } 
}