WCF服务主机找不到任何服务元数据

Question

我几乎将vb中的ASMX中的服务迁移到基于新的WCF 4.0,但我无法运行它,因为我在开始时收到一条消息:

WCF Service Host cannot find any service metadata. This may cause the client application to run improperly. Please check if metadate is enabled. Do you want to exit?

我不知道这个app.config有什么问题.

你能看一下并帮助我吗？

WCF Service Host cannot find any service metadata. This may cause the client application to run improperly. Please check if metadate is enabled. Do you want to exit?

<?xml version="1.0"?>
<configuration>
  <configSections>
    <sectionGroup name="applicationSettings" type="System.Configuration.ApplicationSettingsGroup, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
      <section name="ExtraWS.My.MySettings" requirePermission="false" type="System.Configuration.ClientSettingsSection, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
    </sectionGroup>
  </configSections>
  <!-- When deploying the service library project, the content of the config file must be added to the host's 
  app.config file. System.Configuration does not support config files for libraries. -->
  <system.serviceModel>
    <behaviors>
      <serviceBehaviors>
        <behavior name="ExtraWS.ExtraBehavior">
          <serviceMetadata httpGetEnabled="true" />
          <serviceDebug includeExceptionDetailInFaults="true" />
        </behavior>
      </serviceBehaviors>
    </behaviors>
    <services>
      <service behaviorConfiguration="ExtraWS.ExtraBehavior" name="ExtraWS.Service1">
        <endpoint address="" binding="basicHttpBinding" contract="ExtraWS.Service1" name ="mex">
          <identity>
            <dns value="localhost" />
          </identity>
        </endpoint>
        <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" />
      </service>
    </services>
    <bindings>
      <basicHttpBinding>
        <binding allowCookies="false" bypassProxyOnLocal="false" closeTimeout="00:01:00" hostNameComparisonMode="StrongWildcard" maxBufferPoolSize="2147483647" maxBufferSize="2147483647" maxReceivedMessageSize="2147483647" messageEncoding="Text" name="PostcodeLookupSoap" openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00" textEncoding="utf-8" transferMode="Buffered" useDefaultWebProxy="true">
          <readerQuotas maxArrayLength="2147483647" maxBytesPerRead="2147483647" maxDepth="32" maxNameTableCharCount="2147483647" maxStringContentLength="2147483647" />
          <security mode="Transport">
            <transport clientCredentialType="None" proxyCredentialType="None" realm="" />
            <message algorithmSuite="Default" clientCredentialType="UserName" />
          </security>
        </binding>
        <binding allowCookies="false" bypassProxyOnLocal="false" closeTimeout="00:01:00" hostNameComparisonMode="StrongWildcard" maxBufferPoolSize="2147483647" maxBufferSize="2147483647" maxReceivedMessageSize="2147483647" messageEncoding="Text" name="C1WSSoap" openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00" textEncoding="utf-8" transferMode="Buffered" useDefaultWebProxy="true">
          <readerQuotas maxArrayLength="2147483647" maxBytesPerRead="2147483647" maxDepth="32" maxNameTableCharCount="2147483647" maxStringContentLength="2147483647" />
          <security mode="Transport">
            <transport clientCredentialType="None" proxyCredentialType="None" realm="" />
            <message algorithmSuite="Default" clientCredentialType="UserName" />
          </security>
        </binding>
        <binding allowCookies="false" bypassProxyOnLocal="false" closeTimeout="00:01:00" hostNameComparisonMode="StrongWildcard" maxBufferPoolSize="2147483647" maxBufferSize="2147483647" maxReceivedMessageSize="2147483647" messageEncoding="Text" name="E1Soap" openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00" textEncoding="utf-8" transferMode="Buffered" useDefaultWebProxy="true">
          <readerQuotas maxArrayLength="2147483647" maxBytesPerRead="2147483647" maxDepth="32" maxNameTableCharCount="2147483647" maxStringContentLength="2147483647" />
          <security mode="Transport">
            <transport clientCredentialType="None" proxyCredentialType="None" realm="" />
            <message algorithmSuite="Default" clientCredentialType="UserName" />
          </security>
        </binding>
      </basicHttpBinding>
    </bindings>
    <client>
      <endpoint address="https://postcodews.mycompany.co.uk/PostcodeLookup.asmx" binding="basicHttpBinding" bindingConfiguration="PostcodeLookupSoap" contract="PostcodeService.PostcodeLookupSoap" name="PostcodeLookupSoap" />
      <endpoint address="https://C1.mycompany.co.uk/C1ws.asmx" binding="basicHttpBinding" bindingConfiguration="C1WSSoap" contract="C1Service.C1WSSoap" name="C1WSSoap" />
      <endpoint address="https://E1uat.mycompany.co.uk/qbitE1.asmx" binding="basicHttpBinding" bindingConfiguration="E1Soap" contract="E1Service.E1Soap" name="E1Soap" />
    </client>
  </system.serviceModel>
  <system.web>
    <authorization>
      <allow users="*" />
    </authorization>
    <compilation debug="true" />
    <authentication mode="Windows" />
    <httpHandlers>
      <remove path="*.asmx" verb="*" />
      <add path="*.asmx" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" validate="false" verb="*" />
      <add path="*_AppService.axd" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" validate="false" verb="*" />
      <add path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" validate="false" verb="GET,HEAD" />
    </httpHandlers>
    <httpModules>
      <add name="ScriptModule" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
    </httpModules>
    <membership defaultProvider="ClientAuthenticationMembershipProvider">
      <providers>
        <add name="ClientAuthenticationMembershipProvider" type="System.Web.ClientServices.Providers.ClientFormsAuthenticationMembershipProvider, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" serviceUri="" />
      </providers>
    </membership>
    <roleManager defaultProvider="ClientRoleProvider" enabled="true">
      <providers>
        <add name="ClientRoleProvider" type="System.Web.ClientServices.Providers.ClientRoleProvider, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" serviceUri="" cacheTimeout="86400" />
      </providers>
    </roleManager>
  </system.web>
  <applicationSettings>
    <ExtraWS.My.MySettings>
      <setting name="AlwaysAuthenticate" serializeAs="String">
        <value>False</value>
      </setting>
    </ExtraWS.My.MySettings>
  </applicationSettings>
  <appSettings>
    SECRET/>
    <add key="ClientSettingsProvider.ServiceUri" value="" />
  </appSettings>
  <connectionStrings>
    SECRET/>
  </connectionStrings>
  <startup>
    <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0" />
  </startup>
</configuration>

Answer 1

您的WCF服务是库(DLL)吗？我问,因为您发布的配置文件中有以下行:

<!-- When deploying the service library project, the content of the config file must be added to the host's app.config file. System.Configuration does not support config files for libraries. -->

如果您的服务是DLL,那么您需要<system.serviceModel>在主机的配置文件中发布该部分.对于IIS,这将是web.config文件; 对于Windows服务或自托管服务,它将是app.config文件.如上面的注释行所示,服务库不使用自己的配置文件,它们使用主机的配置文件.