Question

我正在尝试制作我的Windows服务，它承载与跨域兼容的WCF服务。经过数小时和数小时的搜索，我被告知我需要创建另一个服务，它将加载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

这是我对我的主要服务的实施：

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'跨域服务'我被建议添加：

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

这是它的实施：

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：服务具有零应用程序（非基础结构）端点。这可能是因为找不到您的应用程序的配置文件，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。

我搜索过并且仍然不知道该怎么做，有人可以给我一些建议吗？

Windows服务托管的WCF服务上的crossdomain.xml

0 个答案: