System.InvalidOperationException: '绑定实例已经被关联到监听

Posted 2023-02-15

【中文标题】System.InvalidOperationException: \'绑定实例已经被关联到监听

【英文标题】：System.InvalidOperationException: 'A binding instance has already been associated to listenSystem.InvalidOperationException: '绑定实例已经被关联到监听

【发布时间】：2021-07-09 05:03:11

【问题描述】：

我刚刚为一个项目启动了 WCF，它显示了以下异常，但是我发现了一些与此问题相关的问题，但我无法在我的代码中找到，我将代码放在这里，请查看并提出建议我的代码的最佳解决方案。

    <system.serviceModel>
    <services>
      <service name="CompanyService.CompanyService" behaviorConfiguration="mexBehaviour">
        <endpoint address="CompanyService" binding="basicHttpBinding" contract="CompanyService.ICompanyPublicService"></endpoint>
        <endpoint address="CompanyService" binding="netHttpBinding" contract="CompanyService.ICompanyConfidentialService"></endpoint>
        <host>
          <baseAddresses>
            <add baseAddress="http://localhost:8080/"/>
            <add baseAddress="net.tcp://localhost:8091/"/>
          </baseAddresses>
        </host>
      </service>
    </services>
    <behaviors>
      <serviceBehaviors>
        <behavior name="mexBehaviour">
          <serviceMetadata httpGetEnabled="true" />
        </behavior>
      </serviceBehaviors>
    </behaviors>
  </system.serviceModel>

下面是错误异常：

'A binding instance has already been associated to listen URI 'http://localhost:8080/CompanyService'. If two endpoints want to share the same ListenUri, they must also share the same binding object instance. The two conflicting endpoints were either specified in AddServiceEndpoint() calls, in a config file, or a combination of AddServiceEndpoint() and config. '

【问题讨论】：

检查这个question。您似乎遇到了同样的问题。

【参考方案1】：

需要修改端点地址的名称：

    <services>
      <service name="CompanyService.CompanyService" behaviorConfiguration="mexBehaviour">
        <endpoint address="CompanyService01" binding="basicHttpBinding" contract="CompanyService.ICompanyPublicService"></endpoint>
        <endpoint address="CompanyService02" binding="netHttpBinding" contract="CompanyService.ICompanyConfidentialService"></endpoint>
        <host>
          <baseAddresses>
            <add baseAddress="http://localhost:8080/"/>
            <add baseAddress="net.tcp://localhost:8091/"/>
          </baseAddresses>
        </host>
      </service>
    </services>