@RequestParam("fieldId") String fieldId, @RequestParam("fieldValue") String fieldValue,
@RequestParam(value = "id", required = false) Long id) {
ValidateResponse response = ValidateResponse.newInstance();
if ("identity".equals(fieldId)) {
Icon icon = getIconService().findByIdentity(fieldValue);
if (icon == null || (icon.getId().equals(id) && icon.getIdentity().equals(fieldValue))) {
//如果msg 不为空 将弹出提示框
response.validateSuccess(fieldId, "");
} else {
response.validateFail(fieldId, "该标识符已被其他人使用");
}