- return error when no store find in PoiGet

platformapi/mtwmapi/poi.go

@@ -1,6 +1,7 @@
 package mtwmapi
 
 import (
+	"fmt"
 	"io/ioutil"
 	"net/http"
 	"strings"
@@ -45,6 +46,9 @@ func (a *API) PoiMGet(poiCodes []string) (pois []map[string]interface{}, err err
 func (a *API) PoiGet(poiCode string) (poi map[string]interface{}, err error) {
 	result, err := a.PoiMGet([]string{poiCode})
 	if err == nil {
+		if len(result) == 0 {
+			return nil, fmt.Errorf("找不到ID为%s的美团外卖门店", poiCode)
+		}
 		return result[0], nil
 	}
 	return nil, err