java中request.getParameterMap的返回值Map例子

/**
 * 从request中获得参数Map，并返回可读的Map
 *
 * @param request
 * @return
 */
@SuppressWarnings("unchecked")
public static Map getParameterMap(HttpServletRequest request) {
 // 参数Map
 Map properties = request.getParameterMap();
 // 返回值Map
 Map returnMap = new HashMap();
 Iterator entries = properties.entrySet().iterator();
 Map.Entry entry;
 String name = "";
 String value = "";
 while (entries.hasNext()) {
  entry = (Map.Entry) entries.next();
  name = (String) entry.getKey();
  Object valueObj = entry.getValue();
  if(null == valueObj){
   value = "";
  }else if(valueObj instanceof String[]){
   String[] values = (String[])valueObj;
   for(int i=0;i     value = values[i] + ",";
   }
   value = value.substring(0, value.length()-1);
  }else{
   value = valueObj.toString();
  }
  returnMap.put(name, value);
 }
 return returnMap;
}