当Config文件中开启 asp.Net兼容模式的时候

<serviceHostingEnvironment aspNetCompatibilityEnabled="true"    multipleSiteBindingsEnabled="true" />

Server本身需加入以下代码, 以允许asp.net兼容模式, 而非Required模式(此点需特别注意)

  [AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)]