如何使用IMetadataExchange端点获取有关服务元数据的信息？

Question

如何使用IMetadataExchange端点获取有关服务元数据的信息？

我是否需要像在其他接口中那样在类中实现它？

请帮帮我......

Answer 1

不，只需添加公开IMetadataExchange的端点即可。你不必实现任何东西。

Answer 2

框架将为您完成实施。

但是，您必须创建启用此功能的服务行为。

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

        <behaviors>
            <serviceBehaviors>
                 <!-- behavior that enables metadata exchanges -->
                <behavior name="mexGet">
                    <serviceMetadata httpGetEnabled="true"/>
                </behavior>
            </serviceBehaviors>
        </behaviors>
        <services>
            <!-- assign the custom behavior here -->
            <service name="MyNamespace.MyImplementation"
                     behaviorConfiguration="mexGet">
                <host>
                    <baseAddresses>
                        <add baseAddress="http://localhost:3849"/>
                    </baseAddresses>
                </host>
                <endpoint
                    address="MyService"
                    binding="wsHttpBinding"
                    contract="MyNamespace.MyServiceInterface"
                    >

                </endpoint>

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

                </endpoint>
            </service>
        </services>
    </system.serviceModel>
</configuration>

Answer 3

无需实施＆＃39; IMetadataExchange＆＃39;。只需添加端点：

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

重要的是，您必须声明serviceMetadata，否则您的IMetadataExchange将无法找到：

<behaviors>
    <serviceBehaviors>
        <behavior>
            <serviceMetadata />
        </behavior>
    </serviceBehaviors>
</behaviors>