问题描述
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我一直在阅读关于SO的所有问题,我可以在MVC应用程序中托管WCF服务时发现这些问题,但是不幸的是,我没有找到许多有关指定“ 0”的服务的信息。我需要进行流文件传输,因此,如果我想接受有关流的元数据,则必须在消息协定中指定标头。
我已将此服务添加到我的MVC应用中,并添加了“ѭ1”;浏览器无法按预期获取WSDL,而Visual Studio无法获取生成客户端代理类所需的服务元数据。两者都收到如下错误:
Operation \'ImportMessageBody\' in contract \'IImport\' uses a MessageContract that has
SOAP headers. SOAP headers are not supported by the None MessageVersion.
关联的堆栈跟踪:
[InvalidOperationException: Operation \'ImportMessageBody\' in contract \'IImport\' uses a MessageContract that has SOAP headers. SOAP headers are not supported by the None MessageVersion.]
System.ServiceModel.Description.WebHttpBehavior.ValidateNoMessageContractHeaders(MessageDescription md,String opName,String contractName) +704271
System.ServiceModel.Description.WebHttpBehavior.ValidateContract(ServiceEndpoint endpoint) +134
System.ServiceModel.Description.WebHttpBehavior.Validate(ServiceEndpoint endpoint) +51
System.ServiceModel.Description.ServiceEndpoint.Validate(Boolean runoperationValidators,Boolean isForService) +287
System.ServiceModel.Description.dispatcherBuilder.ValidateDescription(ServiceDescription description,ServiceHostBase serviceHost) +271
System.ServiceModel.Description.dispatcherBuilder.InitializeServiceHost(ServiceDescription description,ServiceHostBase serviceHost) +109
System.ServiceModel.ServiceHostBase.InitializeRuntime() +60
System.ServiceModel.ServiceHostBase.OnBeginopen() +27
System.ServiceModel.ServiceHostBase.Onopen(TimeSpan timeout) +50
System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout) +318
System.ServiceModel.Channels.CommunicationObject.open() +36
System.ServiceModel.HostingManager.ActivateService(String normalizedVirtualPath) +184
System.ServiceModel.HostingManager.EnsureServiceAvailable(String normalizedVirtualPath) +615
[ServiceActivationException: The service \'/a/import\' cannot be activated due to an exception during compilation. The exception message is: Operation \'ImportMessageBody\' in contract \'IImport\' uses a MessageContract that has SOAP headers. SOAP headers are not supported by the None MessageVersion..]
System.Runtime.AsyncResult.End(IAsyncResult result) +679246
System.ServiceModel.Activation.HostedHttpRequestAsyncResult.End(IAsyncResult result) +190
System.ServiceModel.Activation.AspNetRouteServiceHttpHandler.EndProcessRequest(IAsyncResult result) +6
System.Web.CallHandlerExecutionStep.OnAsyncHandlerCompletion(IAsyncResult ar) +96
WcfTestClient也有同样的问题(正如我所期望的)。
我需要做什么才能启用客户端代理生成?
这是我的MVC应用程序的web.config文件的serviceModel部分:
<system.serviceModel>
<behaviors>
<serviceBehaviors>
<behavior name=\"\">
<serviceMetadata httpGetEnabled=\"true\" />
<serviceDebug includeExceptionDetailInFaults=\"true\" />
</behavior>
</serviceBehaviors>
</behaviors>
<serviceHostingEnvironment multipleSiteBindingsEnabled=\"true\" aspNetCompatibilityEnabled=\"true\" />
</system.serviceModel>
我添加的路线:
public static void RegisterRoutes(RouteCollection routes)
{
routes.IgnoreRoute(\"{resource}.axd/{*pathInfo}\");
routes.IgnoreRoute(\"{resource}.svc/{*pathInfo}\");
routes.IgnoreRoute(\"favicon.ico\");
routes.Add(new ServiceRoute(\"a/import\",new WebServiceHostFactory(),typeof(Services.Import.Import)));
routes.MapRoute(
\"Default\",// Route name
\"{controller}/{action}/{id}\",// URL with parameters
new { controller = \"Home\",action = \"Index\",id = UrlParameter.Optional } // Parameter defaults
);
}
解决方法
您通过WebServiceHostFactory托管服务,这意味着您正在创建REST端点。
MessageContract的目的是定义SOAP消息(标头和正文),因此,使用WebServiceHostFactory创建的服务不支持它们。
您是否要使用SOAP端点而不是REST端点?