配置文件

<system.serviceModel>    
    <services>
      <!-- Note: the service name must match the configuration name for the service implementation. -->
      <service name="JWService.ApptCheckService" behaviorConfiguration="MyServiceTypeBehaviors" >
        <!-- Add the following endpoint.  -->
        <!-- Note: your service must have an http base address to add this endpoint. -->
        <endpoint contract="你的服务（命名空间.类名）" binding="mexHttpBinding" address="mex" />
      </service>
    </services>

    <behaviors>
      <serviceBehaviors>
        <behavior name="MyServiceTypeBehaviors" >
          <!-- Add the following element to your service behavior configuration. -->
          <serviceMetadata httpGetEnabled="true" />
        </behavior>
        <behavior name="debug">
          <serviceDebug includeExceptionDetailInFaults="true" />
        </behavior>
      </serviceBehaviors>
    </behaviors>
  </system.serviceModel>

添加引用，

此步忽略，参考访问的demo写就可以