客户端在 Windows 服务中找不到 WCF 的端点元素

Question

我正在尝试将 WCF 服务放入 Windows 服务中。我使用 svcutil 来使用 CalculatorService.cs 和 output.config。我把output.config的内容放到了App.config里面，然后写了一个客户端，把CalculatorService.cs也包括进去了。当它运行时，我收到错误 "Could not find default endpoint element that references contract 'IAnswerResult' in the ServiceModel client configuration section"。在我的客户端中，我刚刚复制了向导所说的使用内容：

protected void Page_Load(object sender, EventArgs e)
{
AnswerResultClient client = new AnswerResultClient(); // error here
client.QuestionAnswered("1", "2", "3");
}

在客户端（生成）的 App.config 中，我有以下内容，但它告诉我合同 "IAnswerResult" 无效。不知道为什么。。。是svcutil生成的。

  <system.serviceModel>
    <bindings>
      <basicHttpBinding>
        <binding name="BasicHttpBinding_IAnswerResult" />
      </basicHttpBinding>
      <netTcpBinding>
        <binding name="NetTcpBinding_IAnswerResult" />
      </netTcpBinding>
    </bindings>
    <client>
      <endpoint address="http://localhost:6255/CalculatorService" binding="basicHttpBinding"
          bindingConfiguration="BasicHttpBinding_IAnswerResult" contract="IAnswerResult"
          name="BasicHttpBinding_IAnswerResult" />
      <endpoint address="net.tcp://localhost:6256/CalculatorService"
          binding="netTcpBinding" bindingConfiguration="NetTcpBinding_IAnswerResult"
          contract="IAnswerResult" name="NetTcpBinding_IAnswerResult">
        <identity>
          <servicePrincipalName value="host/Server2012" />
        </identity>
      </endpoint>
    </client>
  </system.serviceModel>

WindowsService/WCF服务中的代码：

namespace EternaService
{
    [ServiceContract(Namespace = "http://EternaService")]

    public interface IAnswerResult
    {
        [OperationContract]
        string QuestionAnswered(string person_int, string course_int, string lesson_int);
    }


    public class CalculatorService : IAnswerResult
    {
        public string QuestionAnswered(string person_int, string course_int, string lesson_int)
        {
            string result = "";
            // Have input, now do something with it.
            return result;
        }

    }

    public partial class EternaService : ServiceBase
    {
        public ServiceHost serviceHost = null;

        public EternaService()
        {
            this.CanStop = true;
            this.CanHandlePowerEvent = true;
            this.CanHandleSessionChangeEvent = true;
            this.CanPauseAndContinue = true;
            this.CanShutdown = true;

            InitializeComponent();
        }

        protected override void OnStart(string[] args)
        {

            if (serviceHost != null)
            {
                serviceHost.Close();
            }
            serviceHost = new ServiceHost(typeof(CalculatorService));
            serviceHost.Open();
        }

App.config 在 Windows Service/WCF 服务中：

<configuration>
    <startup> 
        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5.2" />
    </startup>
  <system.serviceModel>
    <services>
      <service name="EternaService.CalculatorService" behaviorConfiguration="myServiceBehave">
        <host>
          <baseAddresses>
            <add baseAddress="http://localhost:6255/CalculatorService"/>
            <add baseAddress="net.tcp://localhost:6256/CalculatorService"/>
          </baseAddresses>
        </host>
        <endpoint address="http://localhost:6255/CalculatorService" binding="basicHttpBinding" contract="EternaService.IAnswerResult" />
        <endpoint address="net.tcp://localhost:6256/CalculatorService" binding="netTcpBinding" contract="EternaService.IAnswerResult" />
        <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange"/>
        <endpoint address="mex" binding="mexTcpBinding" contract="IMetadataExchange"/>
      </service>
    </services>
    <behaviors>
      <serviceBehaviors>
        <behavior name="myServiceBehave">
          <serviceMetadata httpGetEnabled="true"/>
        </behavior>
      </serviceBehaviors>
    </behaviors>
  </system.serviceModel>
</configuration>

非常感谢任何方向。这是我的第一次尝试，我迷路了！

编辑：我将 Windows 服务 ServiceContract 命名空间更改为：

[ServiceContract(Namespace = "http://CADEEternaService")]

在客户端CalculatorService中class:

[System.ServiceModel.ServiceContractAttribute(Namespace= "http://CADEEternaService", ConfigurationName="IAnswerResult")]
public interface IAnswerResult
{

    [System.ServiceModel.OperationContractAttribute(Action= "http://CADEEternaService/IAnswerResult/QuestionAnswered", ReplyAction= "http://CADEEternaService/IAnswerResult/QuestionAnsweredResponse")]
    string QuestionAnswered(string person_int, string course_int, string lesson_int);

    [System.ServiceModel.OperationContractAttribute(Action= "http://CADEEternaService/IAnswerResult/QuestionAnswered", ReplyAction= "http://CADEEternaService/IAnswerResult/QuestionAnsweredResponse")]
    System.Threading.Tasks.Task<string> QuestionAnsweredAsync(string person_int, string course_int, string lesson_int);
}

在客户的app.config:

  <endpoint address="http://localhost:6255/CalculatorService" binding="basicHttpBinding"
      bindingConfiguration="BasicHttpBinding_IAnswerResult" contract="CADEEternaService.IAnswerResult"
      name="BasicHttpBinding_IAnswerResult" />
  <endpoint address="net.tcp://localhost:6256/CalculatorService"
      binding="netTcpBinding" bindingConfiguration="NetTcpBinding_IAnswerResult"
      contract="CADEEternaService.IAnswerResult" name="NetTcpBinding_IAnswerResult">

但它仍然将 "CADEEternaService.IAnswerResult" 标记为错误，我也得到了原始错误，"Could not find default endpoint element that references contract 'IAnswerResult'"...但是，我发现它在 IAnswerResult 而不是 CADEEternaService.IAnswerResult 在错误消息中。

Answer 1

在您的客户端配置中，合同必须是完全限定名称，而不仅仅是接口名称。

<endpoint address="http://localhost:6255/CalculatorService" 
          binding="basicHttpBinding"
          bindingConfiguration="BasicHttpBinding_IAnswerResult" 
          contract="EternaService.IAnswerResult"
          name="BasicHttpBinding_IAnswerResult" />
  <endpoint address="net.tcp://localhost:6256/CalculatorService"
            binding="netTcpBinding" 
            bindingConfiguration="NetTcpBinding_IAnswerResult"
            contract="EternaService.IAnswerResult"
            name="NetTcpBinding_IAnswerResult">

换句话说，EternaServie.IAnswerResult，不仅仅是IAnswerResult。

Answer 2

您需要在合同之前添加生成的服务引用的命名空间.... 合同=”xxxxxxx.IAnswerResult

 <system.serviceModel>
<bindings>
  <basicHttpBinding>
    <binding name="BasicHttpBinding_IAnswerResult" />
  </basicHttpBinding>
  <netTcpBinding>
    <binding name="NetTcpBinding_IAnswerResult" />
  </netTcpBinding>
</bindings>
<client>
  <endpoint address="http://localhost:6255/CalculatorService" binding="basicHttpBinding"
      bindingConfiguration="BasicHttpBinding_IAnswerResult" contract="**xxxxx.IAnswerResult**"
      name="BasicHttpBinding_IAnswerResult" />
  <endpoint address="net.tcp://localhost:6256/CalculatorService"
      binding="netTcpBinding" bindingConfiguration="NetTcpBinding_IAnswerResult"
      contract="IAnswerResult" name="NetTcpBinding_IAnswerResult">
    <identity>
      <servicePrincipalName value="host/Server2012" />
    </identity>
  </endpoint>
</client>

客户端在 Windows 服务中找不到 WCF 的端点元素

Client can't find endpoint element of WCF Inside Windows Service

c#

wcf

windows-services

wcf-binding