解决golang json解析出现值为空的问题

--------------------1---------------------
 request := UpdateCommentRequestData{}
 req := common.Request{Data: request}
 err := json.Unmarshal(controller.Ctx.Input.RequestBody, &req)
------------------------------------------

type UpdateCommentRequestData struct {
 Id []string `json:"id"`
}

type Request struct {
 UserId uint64 `json:"userId,string"`
 Data interface{} `json:"data"`
}

type ParamConfig struct {
 //标识Id
 Id  string
 //抓拍目标参数配置
 SnapObjConfig *SnapObjConfig
 //默认去重参数配置
 DefaltDeweightConfig *DefaltDeweightConfig
}
//抓拍目标参数结构
type SnapObjConfig struct {
 //分辨率参数
 Distinguish *Distinguish
 //机动车配置
 vehicle *DataConfig
 //非机动车配置
 nonmotor *DataConfig
 //行人配置
 pedestrian *DataConfig
 //人脸配置
 face *DataConfig
}
//分辨率结构
type Distinguish struct {
 //分辨率值
 DistinguishRate int32
}
 
type DataConfig struct {
 //最小宽度
 MinWeight int32
 //最小高度
 MinHight int32
}
//默认去重参数结构
type DefaltDeweightConfig struct {
 vehicle *DeweightNum
 nonmotor *DeweightNum
 pedestrian *DeweightNum
 face *DeweightNum
}
//默认参数值结构
type DeweightNum struct {
 Number float32
}

INSERT INTO "public"."sys_config"("config_key", "config_value") VALUES ('param_config', '[{"Id":"8149aa8e-1466-469b-ac5e-b0ea72f96129","SnapObjConfig":{"Distinguish":{"DistinguishRate":270},"vehicle":{"MinWeight":128,"MinHight":128},"nonmotor":{"MinWeight":32,"MinHight":64},"pedestrian":{"MinWeight":32,"MinHight":64},"face":{"MinWeight":40,"MinHight":40}},"DefaltDeweightConfig":{"vehicle":{"Number":0.95},"nonmotor":{"Number":0.95},"pedestrian":{"Number":0.95},"face":{"Number":0.95}}}]');

func (this *CommonController)GetParamConfig(c *gin.Context) {
 searchResp := &models.SearchResp{
 Code: models.ApiStatus_SUCCESS,
 Msg: "successs",
 }
 retParamConfig := make([]*ParamConfig, 0)
 if configs, err := db_model.SysConfigsByConfigKey(this.DB, ParamConfigKey); err != nil && !models.IsEmptyResults(err){
 glog.Infoln(err)
 searchResp.Code = models.ApiStatus_ERROR
 searchResp.Msg = "fail"
 c.JSON(http.StatusInternalServerError, searchResp)
 return
 } else if len(configs) > 0 {
 glog.Infoln("data----------------", configs[0].ConfigValue)
 if err := json.Unmarshal([]byte(configs[0].ConfigValue), &retParamConfig); err != nil {
 glog.Errorln(err)
 searchResp.Code = models.ApiStatus_ERROR
 searchResp.Msg = err.Error()
 c.JSON(http.StatusInternalServerError, searchResp)
 return
 }
 }
 searchResp.Data = retParamConfig
 glog.Infoln("retParamConfig[0].SnapObjConfig.Vehicle----------", retParamConfig[0].SnapObjConfig.vehicle)
 glog.Infoln("retParamConfig[0].SnapObjConfig.nonmotor-----------", retParamConfig[0].SnapObjConfig.nonmotor)
 glog.Infoln("retParamConfig[0].SnapObjConfig.pedestrian------------", retParamConfig[0].SnapObjConfig.pedestrian)
 glog.Infoln("retParamConfig[0].SnapObjConfig.Fsce------------------", retParamConfig[0].SnapObjConfig.face)
 glog.Infoln("retParamConfig[0].DefaltDeweightConfig.Fsce------------------", retParamConfig[0].DefaltDeweightConfig.face)
 glog.Infoln("retParamConfig[0].DefaltDeweightConfig.Fsce------------------", retParamConfig[0].DefaltDeweightConfig.vehicle)
 glog.Infoln("retParamConfig[0].DefaltDeweightConfig.Fsce------------------", retParamConfig[0].DefaltDeweightConfig.nonmotor)
 glog.Infoln("retParamConfig[0].DefaltDeweightConfig.Fsce------------------", retParamConfig[0].DefaltDeweightConfig.pedestrian)
 
 c.JSON(http.StatusOK, searchResp)
}