Question

我创建了一个简单的Windows服务项目，使用ZKemKeeper库从指纹设备捕获实时事件。该服务似乎在第一时间正常工作，并且它对设备中的事件做出了很好的响应。但我发现，服务在几分钟不活动后停止响应该事件。我认为是导致问题的服务，但是WinForm应用程序中的问题仍然存在，甚至SDK中包含的示例都显示了确切的问题。

以下是Windows服务的代码：

public partial class Service1 : ServiceBase
{
    private System.Diagnostics.EventLog eventLog1;
    CZKEMClass myCZKEMClass;
    public Service1()
    {
        InitializeComponent();

        this.eventLog1 = new System.Diagnostics.EventLog();


        ((System.ComponentModel.ISupportInitialize)(this.eventLog1)).BeginInit();
        this.eventLog1.Log = "MyLog";
        this.eventLog1.Source = "MyLogSource";

        ((System.ComponentModel.ISupportInitialize)(this.eventLog1)).EndInit();

        this.ServiceName = "ZKemKeeperTestService";


    }

    protected override void OnStart(string[] args)
    {
        myCZKEMClass = new CZKEMClass();

        Thread createComAndMessagePumpThread = new Thread(() =>
        {
            myCZKEMClass.Connect_Net("192.168.1.20", 4370);


            if (myCZKEMClass.RegEvent(1, 65535))
            {
                myCZKEMClass.OnAttTransactionEx += new _IZKEMEvents_OnAttTransactionExEventHandler(myCZKEMClass_OnAttTransactionEx);
            }

            Application.Run();
        });
        createComAndMessagePumpThread.SetApartmentState(ApartmentState.STA);

        createComAndMessagePumpThread.Start();

        eventLog1.WriteEntry("Service Started");

    }


    protected override void OnStop()
    {
        eventLog1.WriteEntry("Service Stopped");
        myCZKEMClass.OnAttTransactionEx -= new _IZKEMEvents_OnAttTransactionExEventHandler(myCZKEMClass_OnAttTransactionEx);

    }

    private void myCZKEMClass_OnAttTransactionEx(string EnrollNumber, int IsInValid, int AttState, int VerificationMethod, int Year, int Month, int Day, int Hour, int Minute, int Second, int WorkCode)
    {

        eventLog1.WriteEntry(EnrollNumber.ToString());

    }
}

我不知道问题的原因是什么，我被困在那里。仅供参考，我使用的是在Windows 10中运行的64位版本的库。我使用.NET Framework 4.0作为目标框架。

Achmad Mulyadi

Answer 1

我遇到同样的问题，请尝试取消注册事件，而不是每60秒再次注册，这对我来说很有用。我正在使用64位版本和Windows 8.1中运行的库

        if (bIsConnected == true)
        {
            this.axCZKEM1.OnFinger -= new zkemkeeper._IZKEMEvents_OnFingerEventHandler(axCZKEM1_OnFinger);
            this.axCZKEM1.OnVerify -= new zkemkeeper._IZKEMEvents_OnVerifyEventHandler(axCZKEM1_OnVerify);
            this.axCZKEM1.OnAttTransactionEx -= new zkemkeeper._IZKEMEvents_OnAttTransactionExEventHandler(axCZKEM1_OnAttTransactionEx);
            this.axCZKEM1.OnFingerFeature -= new zkemkeeper._IZKEMEvents_OnFingerFeatureEventHandler(axCZKEM1_OnFingerFeature);
            this.axCZKEM1.OnEnrollFingerEx -= new zkemkeeper._IZKEMEvents_OnEnrollFingerExEventHandler(axCZKEM1_OnEnrollFingerEx);

            iMachineNumber = 1;//In fact,when you are using the tcp/ip communication,this parameter will be ignored,that is any integer will all right.Here we use 1.
            if (axCZKEM1.RegEvent(iMachineNumber, 65535))//Here you can register the realtime events that you want to be triggered(the parameters 65535 means registering all)
            {
                this.axCZKEM1.OnFinger += new zkemkeeper._IZKEMEvents_OnFingerEventHandler(axCZKEM1_OnFinger);
                this.axCZKEM1.OnVerify += new zkemkeeper._IZKEMEvents_OnVerifyEventHandler(axCZKEM1_OnVerify);
                this.axCZKEM1.OnAttTransactionEx += new zkemkeeper._IZKEMEvents_OnAttTransactionExEventHandler(axCZKEM1_OnAttTransactionEx);
                this.axCZKEM1.OnFingerFeature += new zkemkeeper._IZKEMEvents_OnFingerFeatureEventHandler(axCZKEM1_OnFingerFeature);
                this.axCZKEM1.OnEnrollFingerEx += new zkemkeeper._IZKEMEvents_OnEnrollFingerExEventHandler(axCZKEM1_OnEnrollFingerEx);
            }
        }

Answer 2

如果你仍然没有找到答案make Timer并将此代码放入其中

System.Windows.Forms.Application.DoEvents();

这将使ActiveX工作

Answer 3

您可以尝试在线程中添加此代码。

System.Timers.Timer timer = new System.Timers.Timer();
timer.Elapsed += new System.Timers.ElapsedEventHandler((object sender, System.Timers.ElapsedEventArgs e) => 
{
    string IPAddr = null;
    if (axCZKEM1.GetDeviceIP(iMachineNumber, IPAddr))
    {
        LogHelper.Log(LogLevel.Debug, "device " + IPAddr + ":" + port + " connect status is ok.");
    }
});
timer.Interval = 600000;// 10 minutes
timer.Enabled = true;

Answer 4

反复阅读手册中的解决方案后，我发现我的问题是防火墙，请尝试禁用防火墙或为您的软件添加例外

ZKemKeeper库中的实时事件处理程序在一段时间后停止响应设备活动

4 个答案: