Question

我使用Service Stack将数据存储在带有http-POST的Ormlite数据库中。

我生成以下类来存储我在两个不同的表中收到的数据，我的数据被存储但是我收到错误500。当我的数据存储成功时，我尝试生成有效的消息（201）。

/// <summary>
///     Define your ServiceStack web service request (i.e. Request DTO).
/// </summary>
public class NewDevice : IReturn<NewDeviceResponse>
{
    /// <summary>
    ///     Gets or sets the id of the NewDevice. The id will be automatically incremented when added.
    /// </summary>
    [AutoIncrement]
    public int Id { get; set; }

    // Info fix
    public string Type { get; set; }
    public string HumanReadableDeviceSN { get; set; }
    public string Hardware { get; set; }
    public string Model { get; set; }
    // Soft 
    public string Firmware { get; set; }
    public string SwVer1 { get; set; }
    public string SwVer2 { get; set; }

}

/// <summary>
///     Define your ServiceStack web service response (i.e. Response DTO).
/// </summary>
public class NewDeviceResponse
{
    /// <summary>
    ///     Gets or sets the NewDevice.
    /// </summary>
    public NewDevice NewDevice { get; set; }
}

/// <summary>
///     Create your ServiceStack restful web service implementation.
/// </summary>
public class NewDeviceService : Service
{

    /// <summary>
    ///     POST /json/reply/NewDevice
    ///     returns HTTP Response =>
    ///     201 Created
    /// </summary>
    public object Post(NewDevice NewDevice)
    {
        //Db.Insert(NewDevice);
        // ----- Share information posted -----
        // ---- DeviceInfo ----
        Db.Insert(new DeviceInfo.DeviceInfo { DeviceType = NewDevice.Type, HumanReadDevId = NewDevice.HumanReadableDeviceSN, Hardware = NewDevice.Hardware, Model = NewDevice.Model });

        // --- Device History
        Db.Insert(new DeviceHistory.DeviceHistory { Firmware = NewDevice.Firmware, SWVer1 = NewDevice.SwVer1, SWVer2 = NewDevice.SwVer2 });



        // GET Last insert ID from DeviceInfo and DeviceHistory
        var newNewDeviceId = Db.GetLastInsertId();

        //var newNewDeviceId = Db.Select<DeviceInfo.DeviceInfo>("SELECT DeviceId FROM DeviceInfo WHERE DeviceType = LAST_INSERT_ID()", DeviceType, HumanReadDevId);


        var newNewDevice = new NewDeviceResponse
        {
            NewDevice = Db.Id<NewDevice>(newNewDeviceId),
        };

        return new HttpResult(newNewDevice)
        {
            StatusCode = HttpStatusCode.Created,
            Headers =
                           {
                               {HttpHeaders.Location, base.Request.AbsoluteUri.CombineWith(newNewDeviceId.ToString())}
                           }
        };
    }
}

这个当前类用于生成一个新表，我修改它只使用http-post来获取数据并在两个表中共享它们。

行（var newNewDeviceId = Db.GetLastInsertId（）;）获取此前类实现的最后一个插入ID以验证存储（请告诉我，如果我错了）。

但我想得到表格的最后一个插入ID，我存储我的数据（DeviceInfo和DeviceHistory）以验证我的存储。我尝试用SQL请求来获取它，但它不起作用。

如果您对我的问题有任何建议，请告诉我。

谢谢

Answer 1

首先确保您的表格有自动递增的主键。

其次，小心多个插入。您应该在每次插入后直接调用GetLastInsertedId 。在SQL的引擎下它转换为

SELECT SCOPE_IDENTITY()

您的代码应该更像以下内容：

Db.Insert(new DeviceInfo.DeviceInfo 
   { DeviceType = NewDevice.Type, HumanReadDevId = 
     NewDevice.HumanReadableDeviceSN, 
     Hardware = NewDevice.Hardware, Model = NewDevice.Model });

var newNewDeviceId = Db.GetLastInsertId();

Db.Insert(new DeviceHistory.DeviceHistory { Firmware = NewDevice.Firmware, 
           SWVer1 = NewDevice.SwVer1, SWVer2 = NewDevice.SwVer2 });

var newNewDeviceHistoryId = Db.GetLastInsertId();

// Then in any kind of select use the var not the function
var deviceInfo = Db.SingleById<DeviceInfo.DeviceInfo>(newNewDeviceId);

Service Stack ormlite为链接的表生成http响应

1 个答案: