在运行时创建 WCF 服务时出现 ActionNotSupported 错误

Posted 2023-05-07

【中文标题】在运行时创建 WCF 服务时出现 ActionNotSupported 错误

【英文标题】：ActionNotSupported error when a WCF Service is created at runtime

【发布时间】：2012-11-24 10:21:49

【问题描述】：

我正在尝试在运行时创建WCF 服务。我的服务接口是：

[ServiceContract]
public interface IInformationService : IService

    [OperationContract]
    [WebInvoke(Method = "Get", ResponseFormat = WebMessageFormat.Json, 
     UriTemplate = "Test",     RequestFormat  = WebMessageFormat.Json)]
    string Test();

我的服务如下：

var httpEnumerator = ImplementedContracts.Values.GetEnumerator();
httpEnumerator.MoveNext();

var httpContractType = httpEnumerator.Current.ContractType;
var webBinding = new WebHttpBinding()
                 
                   Security =
                   
                     Mode = WebHttpSecurityMode.None
                   
                 ;

var httpEndpoint = AddServiceEndpoint(
  httpContractType, 
  webBinding, baseAddress+/Get"
);

httpEndpoint.Behaviors.Add(new CustomEndpointBehavior());

ServiceHost是通过这个方法创建的：

protected override ServiceHost CreateServiceHost(Type serviceType, Uri[] baseAddresses)

  var host = new WcfServiceHost(serviceType, baseAddresses);

  if (host.Description.Behaviors.Contains(typeof(ServiceDebugBehavior)))
  
    (host.Description.Behaviors[typeof(ServiceDebugBehavior)] as 
    ServiceDebugBehavior).IncludeExceptionDetailInFaults = true;
  
  else
  
    var debug = new ServiceDebugBehavior
                
                  IncludeExceptionDetailInFaults = true
                ;

    host.Description.Behaviors.Add(debug);
  

  if (host.Description.Behaviors.Contains(typeof(ServiceMetadataBehavior)))
  
    (host.Description.Behaviors[typeof(ServiceMetadataBehavior)] as ServiceMetadataBehavior).HttpGetEnabled = true;
    (host.Description.Behaviors[typeof(ServiceMetadataBehavior)] as ServiceMetadataBehavior).HttpsGetEnabled = true;
  
  else
  
    var smb = new ServiceMetadataBehavior
              
                HttpGetEnabled = true,
                HttpsGetEnabled = true
              ;

    host.Description.Behaviors.Add(smb);
  

  host.AddServiceEndpoint(
    ServiceMetadataBehavior.MexContractName,
    MetadataExchangeBindings.CreateMexHttpsBinding(),
    "mex"
  );

  host.AddServiceEndpoint(
    ServiceMetadataBehavior.MexContractName,
    MetadataExchangeBindings.CreateMexHttpBinding(),
    "mex"
  );

  return host;

服务路由创建：

var serviceRoute = new ServiceRoute(
  "wcf.service/" + service.Value.Name, 
  new WcfServiceHostFactory(), 
  service.Value
);

if (!RouteTable.Routes.Contains(serviceRoute))

    RouteTable.Routes.Add(serviceRoute);

当我尝试使用该地址从网络浏览器访问我的服务时

http://localhost/Werp.View/wcf.service/InformationService/Get/Test

我收到以下错误：

<Fault xmlns="http://schemas.microsoft.com/ws/2005/05/envelope/none">
  <Code>
    <Value>Sender</Value>
    <Subcode>
      <Value xmlns:a="http://schemas.microsoft.com/ws/2005/05/addressing/none">
         a:ActionNotSupported
      </Value>
    </Subcode>
  </Code>

<Reason>
  <Text xml:lang="en-US">
    The message with Action '' cannot be processed at the receiver, due to a 
    ContractFilter mismatch at the EndpointDispatcher. This may be because of 
    either a contract mismatch (mismatched Actions between sender and receiver) 
    or a binding/security mismatch between the  sender and the receiver. Check 
    that sender and receiver have the same contract and the same  binding 
    (including security requirements, e.g. Message, Transport, None).
  </Text>
</Reason>

谁能帮帮我？

【参考方案1】：

如果您不需要特定的 WCF 功能或者您有使用 WCF 的授权，您应该考虑为基于 REST 的服务使用不同的堆栈。例如ASP.NET web API 或ServiceStack。做一个简单的 REST 调用似乎需要做很多工作。

如果您打开服务诊断，这可能有助于诊断问题。你可以看到这个SO for detailed instructions

您也可以参考此SO: WCF - ContractFilter mismatch at the EndpointDispatcher exception 了解一些想法。

【参考方案2】：

当我将 WebHttpBehavior 添加到端点时，我的问题已经解决了

httpEndpoint.Behaviors.Add(new WebHttpBehavior());

【参考方案3】：

在我的例子中，我需要向名为 SOAPAction 的请求添加一个 HTTP 标头，其中的值设置为我请求的服务的 xmlns 路径。