我正在尝试使用WCF作为Publisher实现Observer设计模式，并将控制台应用程序实现为客户端。当我尝试在客户端添加WCF服务作为引用时，我得到以下错误。
There was an error downloading 'http://localhost:20814/MessageService.svc/_vti_bin/ListData.svc/$metadata'.
The request failed with the error message:
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<!DOCTYPE html>
<html>
<head>
<title>Could not find a base address that matches scheme net.tcp for the endpoint with binding NetTcpBinding. Registered base address schemes are [http].</title>
<meta name="viewport" content="width=device-width" />
<style>
body {font-family:"Verdana";font-weight:normal;font-size: .7em;color:black;}
p {font-family:"Verdana";font-weight:normal;color:black;margin-top: -5px}
b {font-family:"Verdana";font-weight:bold;color:black;margin-top: -5px}
H1 { font-family:"Verdana";font-weight:normal;font-size:18pt;color:red }
H2 { font-family:"Verdana";font-weight:normal;font-size:14pt;color:maroon }
pre {font-family:"Consolas","Lucida Console",Monospace;font-size:11pt;margin:0;padding:0.5em;line-height:14pt}
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pre { width: 440px; overflow: auto; white-space: pre-wrap; word-wrap: break-word; }
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@media screen and (max-width: 479px) {
pre { width: 280px; }
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<body bgcolor="white">
<span><H1>Server Error in '/' Application.<hr width=100% size=1 color=silver></H1>
<h2> <i>Could not find a base address that matches scheme net.tcp for the endpoint with binding NetTcpBinding. Registered base address schemes are [http].</i> </h2></span>
<font face="Arial, Helvetica, Geneva, SunSans-Regular, sans-serif ">
<b> Description: </b>An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
<br><br>
<b> Exception Details: </b>System.InvalidOperationException: Could not find a base address that matches scheme net.tcp for the endpoint with binding NetTcpBinding. Registered base address schemes are [http].<br><br>
<b>Source Error:</b> <br><br>
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<td>
<code>
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.</code>
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<br>
<b>Stack Trace:</b> <br><br>
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<td>
<code><pre>
[InvalidOperationException: Could not find a base address that matches scheme net.tcp for the endpoint with binding NetTcpBinding. Registered base address schemes are [http].]
System.ServiceModel.ServiceHostBase.MakeAbsoluteUri(Uri relativeOrAbsoluteUri, Binding binding, UriSchemeKeyedCollection baseAddresses) +6065812
System.ServiceModel.Description.ConfigLoader.LoadServiceDescription(ServiceHostBase host, ServiceDescription description, ServiceElement serviceElement, Action`1 addBaseAddress, Boolean skipHost) +701
System.ServiceModel.ServiceHostBase.LoadConfigurationSectionInternal(ConfigLoader configLoader, ServiceDescription description, ServiceElement serviceSection) +69
System.ServiceModel.ServiceHostBase.ApplyConfiguration() +162
System.ServiceModel.ServiceHost.ApplyConfiguration() +178
System.ServiceModel.ServiceHostBase.InitializeDescription(UriSchemeKeyedCollection baseAddresses) +184
System.ServiceModel.ServiceHost.InitializeDescription(Type serviceType, UriSchemeKeyedCollection baseAddresses) +46
System.ServiceModel.ServiceHost..ctor(Type serviceType, Uri[] baseAddresses) +235
System.ServiceModel.Activation.ServiceHostFactory.CreateServiceHost(Type serviceType, Uri[] baseAddresses) +32
System.ServiceModel.Activation.ServiceHostFactory.CreateServiceHost(String constructorString, Uri[] baseAddresses) +524
System.ServiceModel.HostingManager.CreateService(String normalizedVirtualPath, EventTraceActivity eventTraceActivity) +1420
System.ServiceModel.HostingManager.ActivateService(ServiceActivationInfo serviceActivationInfo, EventTraceActivity eventTraceActivity) +52
System.ServiceModel.HostingManager.EnsureServiceAvailable(String normalizedVirtualPath, EventTraceActivity eventTraceActivity) +641
[ServiceActivationException: The service '/MessageService.svc' cannot be activated due to an exception during compilation. The exception message is: Could not find a base address that matches scheme net.tcp for the endpoint with binding NetTcpBinding. Registered base address schemes are [http]..]
System.Runtime.AsyncResult.End(IAsyncResult result) +488839
System.ServiceModel.Activation.HostedHttpRequestAsyncResult.End(IAsyncResult result) +174
System.ServiceModel.Activation.HostedHttpRequestAsyncResult.End(IAsyncResult result) +174
System.ServiceModel.Activation.HostedHttpRequestAsyncResult.End(IAsyncResult result) +174
System.ServiceModel.Activation.ServiceHttpModule.EndProcessRequest(IAsyncResult ar) +350822
System.Web.AsyncEventExecutionStep.OnAsyncEventCompletion(IAsyncResult ar) +9670421
System.Web.AsyncEventExecutionStep.OnAsyncEventCompletion(IAsyncResult ar) +9670421
</pre></code>
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<hr width=100% size=1 color=silver>
<b>Version Information:</b> Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.6.1055.0
</font>
</body>
</html>
<!--
[InvalidOperationException]: Could not find a base address that matches scheme net.tcp for the endpoint with binding NetTcpBinding. Registered base address schemes are [http].
at System.ServiceModel.ServiceHostBase.MakeAbsoluteUri(Uri relativeOrAbsoluteUri, Binding binding, UriSchemeKeyedCollection baseAddresses)
at System.ServiceModel.Description.ConfigLoader.LoadServiceDescription(ServiceHostBase host, ServiceDescription description, ServiceElement serviceElement, Action`1 addBaseAddress, Boolean skipHost)
at System.ServiceModel.ServiceHostBase.LoadConfigurationSectionInternal(ConfigLoader configLoader, ServiceDescription description, ServiceElement serviceSection)
at System.ServiceModel.ServiceHostBase.ApplyConfiguration()
at System.ServiceModel.ServiceHost.ApplyConfiguration()
at System.ServiceModel.ServiceHostBase.InitializeDescription(UriSchemeKeyedCollection baseAddresses)
at System.ServiceModel.ServiceHost.InitializeDescription(Type serviceType, UriSchemeKeyedCollection baseAddresses)
at System.ServiceModel.ServiceHost..ctor(Type serviceType, Uri[] baseAddresses)
at System.ServiceModel.Activation.ServiceHostFactory.CreateServiceHost(Type serviceType, Uri[] baseAddresses)
at System.ServiceModel.Activation.ServiceHostFactory.CreateServiceHost(String constructorString, Uri[] baseAddresses)
at System.ServiceModel.ServiceHostingEnvironment.HostingManager.CreateService(String normalizedVirtualPath, EventTraceActivity eventTraceActivity)
at System.ServiceModel.ServiceHostingEnvironment.HostingManager.ActivateService(ServiceActivationInfo serviceActivationInfo, EventTraceActivity eventTraceActivity)
at System.ServiceModel.ServiceHostingEnvironment.HostingManager.EnsureServiceAvailable(String normalizedVirtualPath, EventTraceActivity eventTraceActivity)
[ServiceActivationException]: The service '/MessageService.svc' cannot be activated due to an exception during compilation. The exception message is: Could not find a base address that matches scheme net.tcp for the endpoint with binding NetTcpBinding. Registered base address schemes are [http]..
at System.Runtime.AsyncResult.End[TAsyncResult](IAsyncResult result)
at System.ServiceModel.Activation.HostedHttpRequestAsyncResult.End(IAsyncResult result)
at System.ServiceModel.Activation.HostedHttpRequestAsyncResult.End(IAsyncResult result)
at System.ServiceModel.Activation.HostedHttpRequestAsyncResult.End(IAsyncResult result)
at System.ServiceModel.Activation.ServiceHttpModule.EndProcessRequest(IAsyncResult ar)
at System.Web.HttpApplication.AsyncEventExecutionStep.OnAsyncEventCompletion(IAsyncResult ar)
at System.Web.HttpApplication.AsyncEventExecutionStep.OnAsyncEventCompletion(IAsyncResult ar)
-->
--.
Metadata contains a reference that cannot be resolved: 'http://localhost:20814/MessageService.svc'.
The requested service, 'http://localhost:20814/MessageService.svc' could not be activated. See the server's diagnostic trace logs for more information.
If the service is defined in the current solution, try building the solution and adding the service reference again.
但是我在WCF的web.config中定义了net.tcp绑定，如下所示：
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<system.serviceModel>
<behaviors>
<serviceBehaviors>
<behavior name="mexBehavior">
<serviceMetadata httpGetEnabled="true" />
<serviceDebug includeExceptionDetailInFaults="true"/>
</behavior>
</serviceBehaviors>
</behaviors>
<services>
<service behaviorConfiguration="mexBehavior" name="AtlasCommunicationServer.MessageService">
<endpoint address="MessageService" binding="netTcpBinding" bindingConfiguration=""
contract="AtlasCommunicationServer.IMessageService" />
<host>
<baseAddresses>
<add baseAddress="http://localhost:8080" />
<add baseAddress="net.tcp://localhost:20814" />
</baseAddresses>
</host>
</service>
</services>
</system.serviceModel>
</configuration>
合同和合同实施如下所示
using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.Serialization;
using System.ServiceModel;
using System.ServiceModel.Web;
using System.Text;
namespace AtlasCommunicationServer
{
// NOTE: You can use the "Rename" command on the "Refactor" menu to change the interface name "IService1" in both code and config file together.
[ServiceContract(CallbackContract = typeof(IMessageServiceCallback))]
public interface IMessageService
{
[OperationContract]
void SendData(string UserID, string Message);
bool Attach(string UserID, IMessageServiceCallback Callback);
}
public interface IMessageServiceCallback
{
[OperationContract]
bool Update(string Message);
}
[DataContract]
public class Message
{
public string MessageData;
public string UserID;
public Message(string UserID, string MessageData)
{
this.UserID = UserID;
this.MessageData = MessageData;
}
}
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.Serialization;
using System.ServiceModel;
using System.ServiceModel.Web;
using System.Text;
namespace AtlasCommunicationServer
{
// NOTE: You can use the "Rename" command on the "Refactor" menu to change the class name "Service1" in code, svc and config file together.
// NOTE: In order to launch WCF Test Client for testing this service, please select Service1.svc or Service1.svc.cs at the Solution Explorer and start debugging.
public class MessageService : IMessageService
{
public Queue<Message> MessageQueue = new Queue<Message>();
public Dictionary<string, IMessageServiceCallback> Notify = new Dictionary<string, IMessageServiceCallback>();
public void SendData(Message _Message)
{
SendData(_Message.UserID, _Message.MessageData);
}
public void SendData(string _UserID, string Message)
{
if (Notify.Keys.Contains(_UserID))
{
try
{
Notify[_UserID].Update(Message);
}
catch (Exception ex)
{
MessageQueue.Enqueue(new Message(_UserID, Message));
//TODO handle the exception
}
}
}
public bool Attach(string _UserID, IMessageServiceCallback _Callback)
{
if (!Notify.Keys.Contains(_UserID))
{
Notify.Add(_UserID, _Callback);
return true;
}
return false;
}
public bool Detach(string _UserID)
{
if (!Notify.Keys.Contains(_UserID))
{
Notify.Remove(_UserID);
return true;
}
return false;
}
}
}
我在这里错过了错误显示的内容？
答案 0 :(得分：0)
检查您的IIS /网站配置：
启用协议：http， net.tcp
这不是网站默认配置。您必须手动将“net.tcp”添加到“启用协议”。