【发布时间】：2015-10-15 13:21:25
【问题描述】：
我正在尝试使托管 WCF 服务的 Windows 服务跨域兼容。 经过数小时的搜索，我被告知我需要创建另一个服务来加载 crossdomain.xml 和 clientaccesspolicy.xml 文件，以便 Windows 托管的 WCF 服务可以在任何域上运行。
这是我的主要服务：
Namespace UmbrellaMobileService
<RunInstaller(True)> _
Public Class ProjectInstaller
Inherits Installer
Private process As ServiceProcessInstaller
Private service As ServiceInstaller
Private components As System.ComponentModel.Container
Public Sub New()
process = New ServiceProcessInstaller()
process.Account = ServiceAccount.LocalSystem
service = New ServiceInstaller()
service.ServiceName = "UmbrellaMobileService"
service.DisplayName = "Umbrella Mobile Service"
service.Description = "Handels Umbrella Mobile Requests."
Installers.Add(process)
Installers.Add(service)
End Sub
End Class
<ServiceBehavior(InstanceContextMode:=InstanceContextMode.PerSession)> _
Public Class UmbrellaMobileService
Inherits ServiceBase
Public serviceHost As ServiceHost = Nothing
Public CrossDomainServiceHost As ServiceHost = Nothing
Public Shared Sub Main()
ServiceBase.Run(New UmbrellaMobileService())
End Sub
Public Sub New()
ServiceName = "UmbrellaMobileService"
End Sub
'Start the Windows service.
Protected Overloads Overrides Sub OnStart(ByVal args As String())
If serviceHost IsNot Nothing Then
serviceHost.Close()
End If
serviceHost = New WebServiceHost(GetType(UmbrellaService), New Uri("http://localhost/UmbrellaMobileService"))
serviceHost.AddServiceEndpoint(GetType(IUmbrellaMobileService), New WebHttpBinding(), "http://localhost/UmbrellaMobileService")
CrossDomainServiceHost = New ServiceHost(GetType(CrossDomainService))
Else
System.Diagnostics.EventLog.WriteEntry("Umbrella Mobile Service", objIniFile.ErrorMessage, EventLogEntryType.Error)
serviceHost.Close()
CrossDomainServiceHost.Close()
End If
serviceHost.Open()
CrossDomainServiceHost.Open()
End Sub
' Stop the Windows service.
Protected Overloads Overrides Sub OnStop()
If serviceHost IsNot Nothing Then
serviceHost.Close()
CrossDomainServiceHost.Close()
serviceHost = Nothing
End If
End Sub
End Class
<AspNetCompatibilityRequirements(Requirementsmode:=AspNetCompatibilityRequirementsMode.Allowed)> _
Public Class UmbrellaService
Inherits System.Web.Services.WebService
Implements IUmbrellaMobileService
Function GetCustomers() As Stream Implements IUmbrellaMobileService.GetCustomers
'Function Logic
End Function
End Class
结束命名空间
这是我的主要服务的实现：
Namespace UmbrellaMobileService
<ServiceContract()> _
Public Interface IUmbrellaMobileService
<OperationContract()> _
<WebInvoke(Method:="GET", BodyStyle:=WebMessageBodyStyle.Bare, ResponseFormat:=WebMessageFormat.Json, RequestFormat:=WebMessageFormat.Json)> _
Function GetCustomers() As Stream
End Interface
结束命名空间
这是我被建议添加的“跨域服务”：
Namespace UmbrellaMobileService
Public Class CrossDomainService
Implements ICrossDomainService
Public Function ProvidePolicyFile() As System.ServiceModel.Channels.Message Implements ICrossDomainService.ProvidePolicyFile
Dim filestream As FileStream = File.Open("ClientAccessPolicy.xml", FileMode.Open)
' Either specify ClientAccessPolicy.xml file path properly
' or put that in \Bin folder of the console application
Dim reader As XmlReader = XmlReader.Create(filestream)
Dim result As System.ServiceModel.Channels.Message = Message.CreateMessage(MessageVersion.None, "", reader)
Return result
End Function
End Class
结束命名空间
这是它的实现：
Namespace UmbrellaMobileService
<ServiceContract()> _
Public Interface ICrossDomainService
<OperationContract(), WebGet(UriTemplate:="ClientAccessPolicy.xml")> _
Function ProvidePolicyFile() As Message
End Interface
结束命名空间
我的配置文件如下所示：
<?xml version="1.0"?>
<configuration>
<system.serviceModel>
<serviceHostingEnvironment aspNetCompatibilityEnabled="true"/>
<behaviors>
<serviceBehaviors>
<behavior name="MyServiceBehavior">
<serviceMetadata httpGetEnabled="true"/>
<serviceDebug includeExceptionDetailInFaults="false"/>
</behavior>
</serviceBehaviors>
<endpointBehaviors>
<behavior name="CrossDomainServiceBehavior">
<webHttp/>
</behavior>
</endpointBehaviors>
</behaviors>
<services>
<service behaviorConfiguration="MyServiceBehavior" name="UmbrellaMobileService.UmbrellaMobileService">
<endpoint address="" binding="basicHttpBinding" contract="UmbrellaMobileService.IUmbrellaMobileService">
</endpoint>
<endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange"/>
<host>
<baseAddresses>
<add baseAddress="http://localhost:8731/UmbrellaMobileService"/>
</baseAddresses>
</host>
</service>
<service name="UmbrellaMobileService.CrossDomainService">
<host>
<baseAddresses>
<add baseAddress="http://localhost:8731/"/>
</baseAddresses>
</host>
<endpoint address="" binding="webHttpBinding" contract="UmbrellaMobileService.ICrossDomainService" behaviorConfiguration="CrossDomainServiceBehavior"/>
</service>
</services>
</system.serviceModel>
<system.web>
<compilation debug="true"/></system.web></configuration>
现在，当我尝试运行此服务时出现此错误：
服务无法启动。 System.InvalidOperationException：服务有零个应用程序（非基础设施）端点。 这可能是因为没有为您的应用程序找到配置文件， 或者因为在配置文件中找不到与服务名称匹配的服务元素，或者因为在服务元素中没有定义端点。
找了又找，还是不知道怎么办，谁能给点建议？
【问题讨论】：
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有人可以帮忙吗？