没有终结点在侦听可以接受消息的http://localhost:8085/mex。这通常是由于不正确的地址或者 SOAP 操作导致的错误。

这个错误是由于没有启动元数据交换终结点（MEX）导致的。在宿主配置里面加上如下终结点就好：|
<endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" />

完整的app.config

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

<configuration>

<system.serviceModel>

<services>

<service name="Stone.Services.ProductOperationService" behaviorConfiguration="dataControctBehavior">

<endpoint binding="wsHttpBinding" contract="Stone.Contracts.IProductOperationContract"

bindingConfiguration="dataControctBinding" ></endpoint>

<endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" />

<host>

<baseAddresses>

<add baseAddress="http://localhost:8085/"/>

</baseAddresses>

</host>

</service>

</services>

<bindings>

<wsHttpBinding>

<binding name="dataControctBinding">

</binding>

</wsHttpBinding>

</bindings>

<behaviors>

<serviceBehaviors>

<behavior name="dataControctBehavior">

<serviceDebug includeExceptionDetailInFaults="true"/>

<serviceMetadata httpGetEnabled="true" httpGetUrl="http://localhost:8085/mex"/>

</behavior>

</serviceBehaviors>

</behaviors>

</system.serviceModel>

</configuration>