Question

我正在尝试使用WCF（VS2010）构建两个Web服务。一个webservice运行正常，但当我添加第二个webservice，然后我收到以下错误：

在列表中找不到合同名称“IMetadataExchange” 服务{0}实施的合同。添加一个 ServiceMetadataBehavior到配置文件或者 ServiceHost直接支持此合同。

第二个Web服务基本上是第一个Web服务的副本。所以我不知道为什么我得到这个错误以及如何解决这个问题。任何人都知道问题可能是什么？

这是我的App.config文件：

<?xml version="1.0" encoding="utf-8" ?>
<configuration>

  <system.web>
    <compilation debug="true" />
  </system.web>
  <!-- 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>
    <services>
      <service behaviorConfiguration="WcfEmguCV1.Service1Behavior" name="WcfEmguCV1.EvalService">
        <endpoint address="" binding="wsHttpBinding" contract="WcfEmguCV1.IEvalService">
          <identity>
            <dns value="localhost" />
          </identity>
        </endpoint>
        <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" />
        <host>
          <baseAddresses>
            <add baseAddress="http://localhost:8732/Design_Time_Addresses/WcfEmguCV1/Service1/" />
          </baseAddresses>
        </host>
      </service>
      <service name="WcfEmguCV1.Image">
        <endpoint binding="wsHttpBinding" bindingConfiguration="" contract="WcfEmguCV1.IIMage">
          <identity>
            <dns value="localhost" />
          </identity>
        </endpoint>
        <endpoint address="mex" binding="mexHttpBinding" bindingConfiguration="" contract="IMetadataExchange" />
        <host>
          <baseAddresses>
            <add baseAddress="http://localhost:8732/Design_Time_Addresses/WcfEmguCV1/Service2/" />
          </baseAddresses>
        </host>
      </service>
    </services>
    <behaviors>
      <serviceBehaviors>
        <behavior name="WcfEmguCV1.Service1Behavior">
          <!-- To avoid disclosing metadata information,
         set the value below to false and remove the metadata endpoint above 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>

        <behavior name="WcfEmguCV1.Service2Behavior">
          <!-- To avoid disclosing metadata information,
         set the value below to false and remove the metadata endpoint above 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>

Answer 1

我发现了我的问题。首先，我通过“编辑WCF配置”选项向App.config添加新数据。（右键单击App.config文件，您应该看到该选项。）

由于第一个webservice配置默认已经存在，我必须添加一个新的。所以我试着输入完全相同的数据。但是有些东西不能通过这种方法添加。

因为当我仔细查看我的XML文件时，我注意到我错过了第二次网络服务：

<service behaviorConfiguration="WcfEmguCV1.Service1Behavior" ...>

所以我所要做的就是将它添加到'service'的第二个节点。

behaviorConfiguration = “WcfEmguCV1.Service2Behavior”

找不到IMetadataExchange

1 个答案: