WCF錯誤-無法啟動服務端點

Question

我最近開始與WCF合作，但遇到一個問題，就是我不知道如何解決。 我使用服務主機啟動WCF服務，但是當我在瀏覽器中使用URI時，它不顯示服務協定，當我嘗試使用ChannelFactory連接到它時，它會給出異常。

我在Visual Studio 2017中創建了項目，但對配置文件不做任何事情，只好更改了基址。 服務接口和實現都在根項目“文件夾”中，並且我嘗試禁用防火牆，甚至禁用殺毒軟件，但似乎沒有任何效果。

App.config：

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
    <startup> 
        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5.2" />
    </startup>
    <system.serviceModel>
        <behaviors>
            <serviceBehaviors>
                <behavior name="">
                    <serviceMetadata httpGetEnabled="true" />
                    <serviceDebug includeExceptionDetailInFaults="false" />
                </behavior>
            </serviceBehaviors>
        </behaviors>
        <services>
            <service name="TaskExecutor.Exec">
                <endpoint address="" binding="basicHttpBinding" contract="TaskExecutor.IExec">
                    <identity>
                        <dns value="localhost" />
                    </identity>
                </endpoint>
                <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" />
                <host>
                    <baseAddresses>
                        <add baseAddress="http://localhost:8001/TaskExecutor/Exec/" />
                    </baseAddresses>
                </host>
            </service>
        </services>
    </system.serviceModel>
</configuration>

服務界面：

namespace TaskExecutor
{
    [ServiceContract]
    public interface IExec
    {
        [OperationContract]
        void DoWork();
    }
}

服務實施：

namespace TaskExecutor
{
    public class Exec : IExec
    {
        public void DoWork()
        {
            Console.WriteLine("Doing work.");
        }
    }
}

程序啟動服務：

using (ServiceHost host = new ServiceHost(typeof(Exec)))
{
    host.Open();
    Console.WriteLine("exec service started at {0}", host.BaseAddresses[0]);
}

Console.WriteLine("Press any key to end...");
Console.ReadLine();

啟動程序后，顯示以下消息：

exec service started at http://localhost:8001/TaskExecutor/Exec/
Press any key to end...

服務客戶端代碼如下：

EndpointAddress endpoint = new EndpointAddress("http://localhost:8001/TaskExecutor/Exec/");
BasicHttpBinding binding = new BasicHttpBinding();

ChannelFactory<IExec> channelFactory = new ChannelFactory<IExec>(binding, endpoint);
IExec proxy = channelFactory.CreateChannel();

proxy.DoWork();

它給出了例外：

System.ServiceModel.EndpointNotFoundException occurred
  HResult=0x80131501
  Message=There was no endpoint listening at http://localhost:8001/TaskExecutor/Exec/ that could accept the message. This is often caused by an incorrect address or SOAP action. See InnerException, if present, for more details.

Inner Exception 1:
WebException: Unable to connect to the remote server

Inner Exception 2:
SocketException: No connection could be made because the target machine actively refused it

我真的不知道該怎么辦，任何幫助都將是驚人的。

非常感謝你！

Answer 1

您已公開元數據但未將其綁定到服務。這是必須的方法。

<behaviors>
            <serviceBehaviors>
                <behavior name="metadadiscovery">
                    <serviceMetadata httpGetEnabled="true" />
                    <serviceDebug includeExceptionDetailInFaults="false" />
                </behavior>
            </serviceBehaviors>
        </behaviors>

現在將行為綁定到服務。

 <services>
        <service name="TaskExecutor.Exec" behaviorConfiguration="metadadiscovery">
            <endpoint address="" binding="basicHttpBinding" contract="TaskExecutor.IExec">
           <identity>
                        <dns value="localhost" />
                    </identity>
                </endpoint>
                <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" />
                <host>
                    <baseAddresses>
                        <add baseAddress="http://localhost:8001/TaskExecutor/Exec/" />
                    </baseAddresses>
                </host>
            </service>
        </services>

現在，當您在瀏覽器中鍵入地址時，您應該可以看到wsdl。 http：// localhost：8001 / TaskExecutor / Exec /

Answer 2

所以我找出了問題所在，這是啟動服務的代碼。 而不是我所擁有的應該是：

using (ServiceHost host = new ServiceHost(typeof(Exec)))
{
    host.Open();
    Console.WriteLine("exec service started at {0}", host.BaseAddresses[0]);
    Console.WriteLine("Press any key to end...");
    Console.ReadLine();
}