Java C#-在WCF服务中使用Windows.winmd

我想在WCF服务中使用“BluetoothLEAdvertisementWatcher”

public override void StartWathchingAsync()
        {
            BluetoothLEAdvertisementWatcher BluetoothWatcher = new BluetoothLEAdvertisementWatcher();
        }

但当我创建“BluetoothLEAdvertisementWatcher”的实例时，我得到了下面的错误

mscorlib.dll中发生“System.ServiceModel.FaultException”“1”类型的未处理异常

附加信息：参数不正确。（不适用于 HRESULT:0x80070057（E_INVALIDARG））

ExceptionDetail，可能是由 IncludeExceptionDetailInFaults=true，其值为： System.ArgumentException:参数不正确。（不适用于 HRESULT:0x80070057（E_INVALIDARG））在 测量设备服务.测量设备类.XiaomiMiScale.StartWathChinaGasync（） 在MeasureingDeviceService.DeviceService.GetData（测量设备 C:\Users\Programmer\Desktop\Project中的测量设备） MahdKodak\MahdKodak\MeasuringDeviceService\DeviceService.svc.cs:line 37在 测量DeviceService.DeviceService.GetDataXiaomiScale（XiaomiScale 在C:\Users\Programmer\Desktop\Project中使用 MahdKodak\MahdKodak\MeasuringDeviceService\DeviceService.svc.cs:line 25在SyncInvokeGetDataScale上（对象，对象[]，对象[]） 位于System.ServiceModel.Dispatcher.SyncMethodInvoker.Invoke（对象 实例、对象[]输入、对象[]和输出） System.ServiceModel.Dispatcher.DispatchOperationRuntime.InvokeBegin（MessageRpc& rpc）在 System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage5（MessageRpc& rpc）在 System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage41（MessageRpc& rpc）在 System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage4（MessageRpc& rpc）在 System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage31（MessageRpc& rpc）在 System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage3（MessageRpc& rpc）在 System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage2（MessageRpc& rpc）在 System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage11（MessageRpc& rpc）在 System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage1（MessageRpc& rpc）位于System.ServiceModel.Dispatcher.MessageRpc.Process（布尔值 等操作上下文集）

当我注释下面的代码行时，我的程序运行良好

//BluetoothLEAdvertisementWatcher BluetoothWatcher = new BluetoothLEAdvertisementWatcher();

编辑：

public class DeviceService : IDeviceService
    {
        Semaphore DeviceSemaphor = null;
        public DeviceService()
        {
            DeviceSemaphor = new Semaphore(1, 1);
        }
        public XiaomiMiScaleData GetDataXiaomiMiScale(XiaomiMiScale xiaomiMiScale)
        {
            return GetData(xiaomiMiScale) as XiaomiMiScaleData;
        }

        public MeasuringDeviceData GetData(MeasuringDevice measuringDevice)
        {
            try
            {
                measuringDevice.StartWathchingAsync();
                return measuringDevice.LastData;
            }
            catch (Exception ex)
            {
                return null;
            }
        }
    }

[DataContract]
    public class MeasuringDevice
    {
        [DataMember]
        public MeasuringDeviceData LastData { get; set; }
        public MeasuringDevice()
        {
        }
        [DataMember]
        public ulong DeviceBluetoothAddress { get; set; }
        public virtual void StartWathchingAsync()
        {

        }
    }

[DataContract]
    public class XiaomiMiScale : MeasuringDevice
    {
        public XiaomiMiScale()
        {
            LastData = new XiaomiMiScaleData();
        }

        public override void StartWathchingAsync()
        {
            BluetoothLEAdvertisementWatcher BluetoothWatcher = new BluetoothLEAdvertisementWatcher();
        }
    }

这是我的密码

服务代码：

public class DeviceService : IDeviceService
    {
        Semaphore DeviceSemaphor = null;
        public DeviceService()
        {
            DeviceSemaphor = new Semaphore(1, 1);
        }
        public XiaomiMiScaleData GetDataXiaomiMiScale(XiaomiMiScale xiaomiMiScale)
        {
            return GetData(xiaomiMiScale) as XiaomiMiScaleData;
        }

        public MeasuringDeviceData GetData(MeasuringDevice measuringDevice)
        {
            try
            {
                measuringDevice.StartWathchingAsync();
                return measuringDevice.LastData;
            }
            catch (Exception ex)
            {
                return null;
            }
        }
    }

[DataContract]
    public class MeasuringDevice
    {
        [DataMember]
        public MeasuringDeviceData LastData { get; set; }
        public MeasuringDevice()
        {
        }
        [DataMember]
        public ulong DeviceBluetoothAddress { get; set; }
        public virtual void StartWathchingAsync()
        {

        }
    }

[DataContract]
    public class XiaomiMiScale : MeasuringDevice
    {
        public XiaomiMiScale()
        {
            LastData = new XiaomiMiScaleData();
        }

        public override void StartWathchingAsync()
        {
            BluetoothLEAdvertisementWatcher BluetoothWatcher = new BluetoothLEAdvertisementWatcher();
        }
    }

其他类别：

public class DeviceService : IDeviceService
    {
        Semaphore DeviceSemaphor = null;
        public DeviceService()
        {
            DeviceSemaphor = new Semaphore(1, 1);
        }
        public XiaomiMiScaleData GetDataXiaomiMiScale(XiaomiMiScale xiaomiMiScale)
        {
            return GetData(xiaomiMiScale) as XiaomiMiScaleData;
        }

        public MeasuringDeviceData GetData(MeasuringDevice measuringDevice)
        {
            try
            {
                measuringDevice.StartWathchingAsync();
                return measuringDevice.LastData;
            }
            catch (Exception ex)
            {
                return null;
            }
        }
    }

[DataContract]
    public class MeasuringDevice
    {
        [DataMember]
        public MeasuringDeviceData LastData { get; set; }
        public MeasuringDevice()
        {
        }
        [DataMember]
        public ulong DeviceBluetoothAddress { get; set; }
        public virtual void StartWathchingAsync()
        {

        }
    }

[DataContract]
    public class XiaomiMiScale : MeasuringDevice
    {
        public XiaomiMiScale()
        {
            LastData = new XiaomiMiScaleData();
        }

        public override void StartWathchingAsync()
        {
            BluetoothLEAdvertisementWatcher BluetoothWatcher = new BluetoothLEAdvertisementWatcher();
        }
    }

---

问题可能出现在MeasuringDeviceService.MeasuringDeviceClass.XiaomiMiScale.StartWathchingAsync（）中，也可能出现在MeasuringDeviceService.DeviceService.GetData（MeasuringDeviceMeasuringDevice）中导致引发异常的某个位置

在堆栈中看到WCF的原因是，上面的代码正在WCF服务中执行，并且当发生错误时，异常将通过FaultException发送回客户端

我不知道您的代码或系统，但我的第一个猜测是您需要了解DeviceService.GetData（）的功能以及如何使其以独立的方式工作

编辑：尝试运行BluetoothLEAdvertisementWatcher BluetoothWatcher=new BluetoothLEAdvertisementWatcher（）；在WCF领域之外的独立方法中调用

---

当您这样做时，它是否按预期工作？您是否可以在服务器端设置一个断点，准确地查看抛出的异常并粘贴调用堆栈？

如果您的方法只有一行导致异常的代码，那么在注释该行时，您的方法当然可以正常工作。您是否已检查BluetoothLEAdvertisementWatcher构造函数是否需要构造函数参数？你有访问API的权限吗，或者可能会发布整个代码？谢谢你，我在控制台应用程序中进行了测试，效果很好，我为我的问题制作了一个Gif，我没有访问源代码的权限，但是你可能想尝试这样的东西：new BluetoothLEAdvertisementWatcher{ScanningMode=BluetoothLEScanningMode.Active}；watcher.Start（）；没有解决我发现这个关于元数据的问题是否相关？它不相关。问题在于BluetoothLEAdvertisementWatcher以及它如何在无参数公共构造函数中引发异常。你所展示的看起来像是一个bug，你应该考虑报告它。确保你提供了一份完整的工作报告。