init_any_struct.go

func initStruct(p reflect.Type) (instance reflect.Value) {
	instance = reflect.New(p).Elem()
	if p.Kind() == reflect.Slice {
		instance.Set(reflect.Append(instance, initStruct(p.Elem())))
		return instance
	}
	for i := 0; i < p.NumField(); i++ {
		switch instance.Field(i).Kind() {
		case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
			fallthrough
		case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
			instance.Field(i).SetInt(10010)
		case reflect.Float32, reflect.Float64:
			instance.Field(i).SetFloat(100.86)
		case reflect.String:
			instance.Field(i).SetString("12345")
		case reflect.Bool:
			instance.Field(i).SetBool(true)
		case reflect.Slice:
			instance.Field(i).Set(reflect.Append(instance.Field(i), initStruct(instance.Field(i).Type())))
		case reflect.Struct:
			instance.Field(i).Set(initStruct(instance.Field(i).Type()))
		case reflect.Ptr:
			instance.Field(i).Set(initStruct(instance.Field(i).Elem().Type()).Addr())
		case reflect.Map:
			key := initStruct(instance.Field(i).Type().Key())
			value := initStruct(instance.Field(i).Type().Elem())
			instance.Field(i).SetMapIndex(key, value)
		default:
			continue
		}
	}
	return instance
}