- add func utils.IsTimeZero

utils/typeconv.go

@@ -283,6 +283,10 @@ func Str2TimeWithDefault(timeStr string, defValue time.Time) time.Time {
 	return retVal
 }
 
+func IsTimeZero(timeValue time.Time) bool {
+	return timeValue == DefaultTimeValue || timeValue == ZeroTimeValue
+}
+
 func HTTPResponse2Json(response *http.Response) (map[string]interface{}, error) {
 	var jsonResult map[string]interface{}
 	bodyData, err := ioutil.ReadAll(response.Body)