code: public static void validObject(Object pContent, String pParamName) throws APPErrorException {
          if (null==pContent) {
              throw new APPErrorException(pParamName + " 不能为null");
          }
      }
docs: 验证对象不能为空
  @param pContent 文本
  @param pParamName 参数名称
  @throws APPErrorException