+ BatchCoordinateConvert

platformapi/autonavi/autonavi.go

@@ -43,6 +43,7 @@ const (
 
 const (
 	FakeDistrictPadding = 9000000
+	MaxConvertCount     = 40
 )
 
 var (
@@ -89,6 +90,11 @@ type District struct {
 	Districts []*District `json:"districts"`
 }
 
+type Coordinate struct {
+	Lng float64 `json:"lng"`
+	Lat float64 `json:"lat"`
+}
+
 type ResponseResult map[string]interface{}
 
 type API struct {
@@ -161,6 +167,15 @@ func (a *API) AccessAPI(apiStr string, params map[string]interface{}) (retVal Re
 
 // 为了方便调用者编码，如果失败，也会返回未转换的原始值
 func (a *API) CoordinateConvert(lng, lat float64, coordsys string) (retLng, retLat float64, err error) {
+	// outCoords, err := a.BatchCoordinateConvert([]*Coordinate{
+	// 	&Coordinate{
+	// 		Lng: lng,
+	// 		Lat: lat,
+	// 	},
+	// }, coordsys)
+	// if err == nil {
+	// 	retLng, retLat = outCoords[0].Lng, outCoords[0].Lat
+	// }
 	if coordsys == "" || coordsys == CoordSysAutonavi {
 		return lng, lat, nil
 	}
@@ -180,6 +195,33 @@ func (a *API) CoordinateConvert(lng, lat float64, coordsys string) (retLng, retL
 	return lng, lat, err
 }
 
+func (a *API) BatchCoordinateConvert(coords []*Coordinate, coordsys string) (outCoords []*Coordinate, err error) {
+	if coordsys == "" || coordsys == CoordSysAutonavi {
+		return coords, nil
+	}
+	var coordsStrList []string
+	for _, v := range coords {
+		coordsStrList = append(coordsStrList, fmt.Sprintf("%.6f,%.6f", v.Lng, v.Lat))
+	}
+	params := map[string]interface{}{
+		"locations": strings.Join(coordsStrList, "|"),
+		"coordsys":  coordsys,
+	}
+	result, err := a.AccessAPI("assistant/coordinate/convert", params)
+	if err == nil {
+		coordinate := result["locations"].(string)
+		retCoordsStrList := strings.Split(coordinate, ";")
+		for _, v := range retCoordsStrList {
+			pair := strings.Split(v, ",")
+			outCoords = append(outCoords, &Coordinate{
+				Lng: utils.Str2Float64(pair[0]),
+				Lat: utils.Str2Float64(pair[1]),
+			})
+		}
+	}
+	return outCoords, err
+}
+
 func (a *API) GetCoordinateFromAddress(address string, cityInfo string) (lng, lat float64, districtCode int) {
 	params := map[string]interface{}{
 		"address": address,