我正在嘗試根據我從數據庫獲取的路徑訪問屬性：例如，在結構車輛中，type Vehicle struct { core.Model Manufacturer Manufacturer VehicleNumber string.....}type Manufacturer struct { ManufacturerName string....}我想獲取value := exportValueFromField(vehicle,"Manufacturer.ManufacturerName") func exportValueFromField(data interface{}, index string) string { indexArray := strings.Split(index, ".") r := reflect.ValueOf(data) for _, i := range indexArray { if r.FieldByName(i).Kind() == reflect.Struct { r = reflect.ValueOf(r.FieldByName(i).Interface()) }else { r = r.FieldByName(i) } } return fmt.Sprintf("%v", r) }但它似乎不起作用
1 回答
有只小跳蛙
TA貢獻1824條經驗 獲得超8個贊
此代碼只是您嘗試的內容的回顧，并且有效
package main
import (
"fmt"
"reflect"
"strings"
)
type Vehicle struct {
Manufacturer Manufacturer
VehicleNumber string
}
type Manufacturer struct {
ManufacturerName string
}
func exportValueFromField(data interface{}, index string) string {
indexArray := strings.Split(index, ".")
r := reflect.ValueOf(data)
for _, i := range indexArray {
if r.FieldByName(i).Kind() == reflect.Struct {
r = reflect.ValueOf(r.FieldByName(i).Interface())
} else {
r = r.FieldByName(i)
}
}
return fmt.Sprintf("%v", r)
}
func main() {
var vehicle = Vehicle{
Manufacturer: Manufacturer{
ManufacturerName: "hello",
},
}
value := exportValueFromField(vehicle, "Manufacturer.ManufacturerName")
fmt.Println(value)
}
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