/**
 * 將HttpServletRequest中的欄位 轉存到 HashMap
*/
public HashMap getRequestParams(javax.servlet.http.HttpServletRequest request) {
 HashMap hmap = new HashMap();
 Enumeration paramNames = request.getParameterNames();
 while(paramNames.hasMoreElements()){
  String paramName = paramNames.nextElement().toString();
  String paramValue = (request.getParameter(paramName)==null)?"":request.getParameter(paramName);
  hmap.put(paramName, paramValue);
 }
 return hmap;
}