fix

services/base_from_ths.go

@@ -53,6 +53,10 @@ func getEdbDataFromThs(edbCode, startDate, endDate string, num int) (item *EdbDa
 		err = errors.New(" Err:" + err.Error() + ";result:" + string(body))
 		return
 	}
+	if string(body) == "null" {
+		err = errors.New("同花顺数据获取异常:" + err.Error() + ";result:" + string(body))
+		return
+	}
 
 	tmpItems := new(EdbDataFromThsInterface)
 	err = json.Unmarshal(body, &tmpItems)