WCF：没有可以接受消息的端点监听

Question

我有 WCF 服务 (JSON) 和 ASP.NET 网站，我们将服务引用添加到连接到 wcf 服务的那个网站。

当我使用 POSTMAN 和 SOAPUI 测试服务以及尝试以下代码时：

WebClient client = new WebClient();
client.Headers["Content-type"] = "application/json";
client.Encoding = System.Text.Encoding.UTF8;
string result = client.UploadString("http://localhost:1122/Service.svc/GetInfo", string.Empty);

它工作正常（注意我所有的服务功能都是 POST）。

但是当我将服务添加到服务引用并连接到服务并尝试调用函数 GetInfo() 时，会出现以下问题。

异常信息

There was no endpoint listening at http://localhost:1122/Service.svc that could
accept the message. This is often caused by an incorrect address or SOAP action. 
See InnerException, if present, for more details.

内部异常消息

The remote server returned an error: (404) Not Found.

服务器堆栈跟踪：

at System.ServiceModel.Channels.HttpChannelUtilities.ProcessGetResponseWebException(WebException webException, HttpWebRequest request, HttpAbortReason abortReason)
at System.ServiceModel.Channels.HttpChannelFactory`1.HttpRequestChannel.HttpChannelRequest.WaitForReply(TimeSpan timeout)
at System.ServiceModel.Channels.RequestChannel.Request(Message message, TimeSpan timeout)
at System.ServiceModel.Dispatcher.RequestChannelBinder.Request(Message message, TimeSpan timeout)
at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs, TimeSpan timeout)
at System.ServiceModel.Channels.ServiceChannelProxy.InvokeService(IMethodCallMessage methodCall, ProxyOperationRuntime operation)
at System.ServiceModel.Channels.ServiceChannelProxy.Invoke(IMessage message)

我认为这个问题是由于网络服务和网站的配置文件配置不正确，所以你可以在下面找到这两个配置文件：

网络服务配置文件：

<system.serviceModel>    
<services>
  <service name="WCFService.Service" behaviorConfiguration="ServiceBehavior">
    <endpoint address="" binding="webHttpBinding" contract="WCFService.IService" name="WebHttp_IService"
      bindingConfiguration="WebHttpBinding_IService" behaviorConfiguration="ServiceBehaviorEndpoint" />
    <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" />
  </service>
</services>

<bindings>
  <webHttpBinding>
    <binding name="WebHttpBinding_IService" maxBufferPoolSize="2147483647" maxReceivedMessageSize="2147483647"
             maxBufferSize="2147483647" openTimeout="00:20:00" receiveTimeout="00:20:00" closeTimeout="00:20:00" sendTimeout="00:20:00">
      <readerQuotas maxDepth="200" maxStringContentLength="8388608" maxArrayLength="16384" maxBytesPerRead="2147483647" maxNameTableCharCount="16384" />
    </binding>
  </webHttpBinding>
</bindings>

<behaviors>
  <serviceBehaviors>
    <behavior name="ServiceBehavior">
      <serviceMetadata httpGetEnabled="true" httpsGetEnabled="true" />
      <serviceDebug includeExceptionDetailInFaults="true"/>
    </behavior>
  </serviceBehaviors>
  <endpointBehaviors>
    <behavior name="ServiceBehaviorEndpoint">
      <webHttp helpEnabled="true" />
    </behavior>
  </endpointBehaviors>
</behaviors>

<protocolMapping>
    <add binding="basicHttpsBinding" scheme="https" />
</protocolMapping>    
<serviceHostingEnvironment aspNetCompatibilityEnabled="true" multipleSiteBindingsEnabled="true" />
</system.serviceModel>

网站配置文件：

<system.serviceModel>
<bindings>
  <basicHttpBinding>
    <binding name="BasicHttpBinding_IService"/>
  </basicHttpBinding>
  <webHttpBinding>
    <binding maxBufferSize="2147483647" maxBufferPoolSize="2147483647" maxReceivedMessageSize="2147483647">
      <readerQuotas maxDepth="2147483647" maxStringContentLength="2147483647" maxArrayLength="2147483647" 
                    maxBytesPerRead="2147483647" maxNameTableCharCount="2147483647"/>
    </binding>
  </webHttpBinding>
</bindings>
<client>
  <endpoint address="http://localhost:1122/Service.svc" bindingConfiguration="BasicHttpBinding_IService" 
            contract="WCFServices.IService" name="BasicHttpBinding_IService" binding="basicHttpBinding" />
</client>
</system.serviceModel>

请注意，网站中的服务引用名称是 WCFService，我们尝试将服务托管到具有公共 IP 的 iis 并打开防火墙，但出现了同样的问题。

Answer 1

当我们通过客户端代理类调用使用 WebHttpBinding 创建的服务时，可能与其他绑定存在一些差异。我们需要手动配置客户端配置，比如通过添加服务引用将端点行为添加到服务端点，将webget/webinvoke属性添加到自动生成的操作方法中。
我做了一个演示，希望对你有用。
服务器端（控制台应用程序）。

class Program
    {
        static void Main(string[] args)
        {
            using (ServiceHost sh=new ServiceHost(typeof(MyService)))
            {
                sh.Opened += delegate
                {
                    Console.WriteLine("Service is ready......");
                };
                sh.Closed += delegate
                {
                    Console.WriteLine("Service is closed");
                };
                sh.Open();
                Console.ReadLine();
                sh.Close();

            }
        }
    }
    [ServiceContract]
    public interface IService
    {
        [OperationContract]
        [WebGet]
        string SayHello();
    }
    public class MyService : IService
    {
        public string SayHello()
        {
return "Hello, Busy world";        }
}

App.config

<system.serviceModel>
    <services>
      <service behaviorConfiguration="Service1Behavior" name="VM1.MyService">
        <endpoint address="" binding="webHttpBinding" contract="VM1.IService" behaviorConfiguration="rest" >
        </endpoint>
        <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange"/>
        <host>
          <baseAddresses>
            <add baseAddress="http://localhost:13008"/>
          </baseAddresses>
        </host>
      </service>
    </services>
    <behaviors>
      <serviceBehaviors>
        <behavior name="Service1Behavior">
          <serviceMetadata httpGetEnabled="true"/>
          <serviceDebug includeExceptionDetailInFaults="False"/>
        </behavior>
      </serviceBehaviors>
      <endpointBehaviors>
        <behavior name="rest">
          <webHttp/>
        </behavior>
      </endpointBehaviors>
    </behaviors>
  </system.serviceModel>

客户端（控制台应用）

static void Main(string[] args)
{
    ServiceReference1.ServiceClient client = new ServiceReference1.ServiceClient();
    try
    {
        Console.WriteLine(client.SayHello());
    }
    catch (Exception)
    {

        throw;
    }

}

App.config

  <system.serviceModel>
    <behaviors>
      <endpointBehaviors>
        <behavior name="rest">
          <webHttp />
        </behavior>
      </endpointBehaviors>
    </behaviors>
    <client>
      <endpoint address="http://10.157.13.69:13008/" binding="webHttpBinding" contract="ServiceReference1.IService" behaviorConfiguration="rest">
      </endpoint>
    </client>
  </system.serviceModel>

我们还需要在操作方法中添加WebGet属性。

[System.CodeDom.Compiler.GeneratedCodeAttribute("System.ServiceModel", "4.0.0.0")]    [System.ServiceModel.ServiceContractAttribute(ConfigurationName="ServiceReference1.IService")]
public interface IService {
            [System.ServiceModel.OperationContractAttribute(Action="http://tempuri.org/IService/SayHello", ReplyAction="http://tempuri.org/IService/SayHelloResponse")]
    [WebGet]
    string SayHello();

结果。

如果有什么我可以帮忙的，请随时告诉我。