我遇到了恐慌：运行时错误：Golang中的内存地址无效或nil指针取消引用

Question

死机：运行时错误：内存地址无效或无指针取消引用当我添加statusCOD, err := c.route.FindStatusCODByOrigin(ctx, req.Origin)            if err != nil {                if err != sql.ErrNoRows {                    ddlogger.Log(ctx, span, "Find status cod destination and cod origin", err)                    errChan <- err                    return                }            }            if statusCOD != nil {                IsCODOrigin = statusCOD.IsCODOrigin                IsCODDestination = statusCOD.IsCODDestination            }在这个功能中for i, v := range detailShipments {        var dtPackage repo.PackageBaseModel        go func(idx int, vShipment repo.ShipmentDetailBaseModel, dataShipmentNew repo.ShipmentCODCreateModel) {            defer wg1.Done()            randomID := commonString.RandomWithCustomCharList(c.config.ShipmentCODIDRandom, c.config.ShipmentIDCharlist)            shipmentID := fmt.Sprintf("%s%s", prefix, randomID)            dataShipmentNew.ShipmentBaseModel.ShipmentID = strings.ToUpper(shipmentID)            dataShipmentNew.ShipmentDetailBaseModel = vShipment            var commodityName string            sCategory, err := c.shipmentCategoryRepo.FindOneShipmentCategoryByID(ctx, vShipment.ShipmentCategoryID.Int64)            if err != err && err != sql.ErrNoRows {                ddlogger.Log(ctx, span, "shipmentService-CreateShipmentCOD "+shipmentID, " Failed shipmentCategoryRepo.FindOneShipmentCategoryByID", err)            } else {                if sCategory != nil {                    commodityName = sCategory.CommodityName.String                }            }

Answer 1

看起来您刚刚创建了指针，并且它不指向任何内存空间，您可以检查新代码中的所有变量以找到它。例如