无法访问 WCF 服务元数据 (wsdl)：错误 400

如何解决无法访问 WCF 服务元数据 (wsdl)：错误 400

我在新安装（Windows Server 2016 上的 IIS 10）上遇到 WCF 元数据问题

情况

• WCF 服务运行良好（就像以前安装时一样）

• wsdl 的导航（通过浏览器）不再可能，或者更好

• http://ServiceA/ServiceA.svc：是（网页可用）但指向 xml 的链接不起作用（来自 IIS 的错误 400）

• https://ServiceA/ServiceA.svc：连页面都没有

  此外，在 serviceMetadata 中声明使用 https 不使用 http，这与刚刚描述的行为形成对比。

下面是 web.config 的摘录

<services>
      <service behaviorConfiguration="ServiceBehavior" name="...">
        <endpoint address="https://<fqdn>/ServiceA/ServiceA.svc"
                  binding="wsHttpBinding"
                  bindingConfiguration="wsHttpEndpointBinding"
                  name="WsHttpBinding"
                  contract="ServiceContracts.IServiceA">
        </endpoint>
      </service>
    </services>
    <behaviors>
      <serviceBehaviors>
          <serviceMetadata httpsGetEnabled="true" httpGetEnabled="false" />
    ...

可能与名称解析有关吗？ PC 名称为 AAAAAA，FQDN 为 BBBBB.domain.ext

感谢您的任何建议 L.

解决方法

部署在 IIS 中的 WCF 服务不需要在 web.config 中设置端点地址。

这是我的演示：

<?xml version="1.0"?>
<configuration>

  <appSettings/>
  <connectionStrings/>
  <system.web>
    <compilation debug="true">
    </compilation>
    <!--
        The <authentication> section enables configuration 
        of the security authentication mode used by 
        ASP.NET to identify an incoming user. 
    -->
    <authentication mode="Windows" />
    <!--
        The <customErrors> section enables configuration 
        of what to do if/when an unhandled error occurs 
        during the execution of a request. Specifically,it enables developers to configure html error pages 
        to be displayed in place of a error stack trace.

        <customErrors mode="RemoteOnly" defaultRedirect="GenericErrorPage.htm">
         <error statusCode="403" redirect="NoAccess.htm" />
         <error statusCode="404" redirect="FileNotFound.htm" />
        </customErrors>
      -->
  </system.web>
  <system.webServer>
    <!--
        To browse web app root directory during debugging,set the value below to true.
        Set to false before deployment to avoid disclosing web app folder information.
      -->
    <directoryBrowse enabled="true"/>
  </system.webServer>
  <system.serviceModel>
    <services>
      <service name="WcfService25.Service1" behaviorConfiguration="WcfService25.Service1Behavior">
        <!-- Service Endpoints -->
        <endpoint address="" binding="basicHttpBinding" contract="WcfService25.IService1">
          <!-- 
              Upon deployment,the following identity element should be removed or replaced to reflect the 
              identity under which the deployed service runs.  If removed,WCF will infer an appropriate identity 
              automatically.
          -->
          <identity>
            <dns value="localhost"/>
          </identity>
        </endpoint>
        <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange"/>
      </service>
    </services>
    <behaviors>
      <serviceBehaviors>
        <behavior name="WcfService25.Service1Behavior">
          <!-- To avoid disclosing metadata information,set the value below to false before deployment -->
          <serviceMetadata httpGetEnabled="true"/>
          <!-- To receive exception details in faults for debugging purposes,set the value below to true.  Set to false before deployment to avoid disclosing exception information -->
          <serviceDebug includeExceptionDetailInFaults="false"/>
        </behavior>
      </serviceBehaviors>
    </behaviors>
  </system.serviceModel>

</configuration>

这是 web.config。此项目为模板项目。

WCF服务在IIS中的基地址如下：