Question

我正在尝试在Windows窗体应用程序中运行WCF服务。我复制并修改了Microsoft的WCF示例中的代码。运行WCF Sample时，服务显示在我使用的端口监视器（CurrPorts）中。当我运行我的代码时，我看不到我的服务......

这是我的代码：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.ServiceModel;

namespace NoName.Server
{
    [ServiceContract(Namespace="http://NoName")]
    public interface IApplicationService
    {
        [OperationContract()]
        NoName.Entities.MediaParameter[] GetParametersForMediaObject(string mediaObjectId);
        [OperationContract()]
        NoName.Entities.MediaParameter GetMediaParameter(string parameterId);
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace NoName.Server
{
    public class ApplicationService : IApplicationService
    {
        public Entities.MediaParameter[] GetParametersForMediaObject(string mediaObjectId)
        {
            throw new NotImplementedException();
        }

        public Entities.MediaParameter GetMediaParameter(string parameterId)
        {
            throw new NotImplementedException();
        }
    }
}

我正在从表单

运行它

private void toolStripButton1_Click(object sender, EventArgs e)
{
   using (ServiceHost host = new ServiceHost(typeof(ApplicationService)))
   {
      host.Open();
   }
}

app.config中的配置：

<system.serviceModel>
    <services>
      <service name="NoName.Server.ApplicationService" behaviorConfiguration="ApplicationServiceBehavior">
        <host>
          <baseAddresses>
            <add baseAddress="http://localhost:8000/NoName/ApplicationService"/>
          </baseAddresses>
        </host>
        <!-- this endpoint is exposed at the base address provided by host: http://localhost:8000/NoName/ApplicationService  -->
        <endpoint address="" binding="wsHttpBinding" contract="NoName.Server.IApplicationService"/>
        <!-- the mex endpoint is exposed at soap.tcp://localhost:8000/NoName/ApplicationService/mex -->
        <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange"/>
      </service>
    </services>

    <!--For debugging purposes set the includeExceptionDetailInFaults attribute to true-->
    <behaviors>
      <serviceBehaviors>
        <behavior name="ApplicationServiceBehavior">
          <serviceMetadata httpGetEnabled="True"/>
          <serviceDebug includeExceptionDetailInFaults="False"/>
        </behavior>
      </serviceBehaviors>
    </behaviors>
  </system.serviceModel>

它运行时没有错误编译，没有异常。它不会存在。想法？

Answer 1

嗯 - 你正在使用using块，这通常是一件好事 - 但是在这里，服务主机将在using块的末尾立即再次关闭 - 这是当然不你想要的东西！

using (ServiceHost host = new ServiceHost(typeof(ApplicationService)))
{
    host.Open();   // host is opened here
}                  // host is disposed and closed here

所以你的ServiceHost已经打开并准备好接收请求 - 仅仅几分之一秒......然后它被关闭并被处理掉，因为using { .. }块已经结束.....

您需要做的是：

将私有成员变量添加到例如你的主要表格
```
  private ServiceHost _serviceHost = null;
```

在代码中的某个位置打开该服务主机，例如在你的方法中你有：

private void toolStripButton1_Click(object sender, EventArgs e)
{
    _serviceHost = new ServiceHost(typeof(ApplicationService));
}

将其打开，直到例如Winforms应用程序关闭（或用户选择其他菜单项以实际关闭服务主机）

Windows窗体应用程序中的WCF

1 个答案: