Question

我创建了以下svc服务 -

public class NewsRest : INewsRest
{
    public string getHomePageNews1()
    {
        DataTable dt = new DataTable();
        try
        {

            dt = new ManageNews().getHomePageNews1();
           string json = new Utills().dataTableToJsonString(dt);
           json = json.Replace("task-photo-846b6edc-3b2e-4ff6-ba10-734d64143c1d.png", "task-photo-8d5feed4-d6a1-4ae9-9a72-387ccfda1dc5.jpg");
            return json;
        }
        catch (Exception ex)
        {
            return "{}";
        }
    }
}


 [ServiceContract]
public interface INewsRest
{
    [OperationContract]
    [WebGet(ResponseFormat=WebMessageFormat.Json)]
    string getHomePageNews1();
}

和web配置配置是 -

<system.serviceModel>
<behaviors>
  <serviceBehaviors>
    <behavior name="NewsRestBehavior">
      <serviceMetadata httpGetEnabled="true" policyVersion="Policy15"  />
      <serviceDebug includeExceptionDetailInFaults="false" />
    </behavior>
  </serviceBehaviors>
</behaviors>
<services>
  <service name="UPNews.WebServices.NewsRest" behaviorConfiguration="NewsRestBehavior">
    <endpoint address=""
              binding="basicHttpBinding"
              contract="UPNews.WebServices.INewsRest" />
    <endpoint address="mex" binding="mexHttpBinding" name="MetadataEndpoint"
     contract="IMetadataExchange" />
  </service>
</services>
<serviceHostingEnvironment multipleSiteBindingsEnabled="true" />

但是当我在WCF测试客户端上测试此服务时，它会出现以下错误.-

错误：无法从http://localhost:57358/WebServices/NewsRest.svc/getHomePageNews1获取元数据如果这是您可以访问的Windows（R）Communication Foundation服务，请检查您是否已在指定地址启用元数据发布。有关启用元数据发布的帮助请参阅http://go.microsoft.com/fwlink/?LinkId=65455.WS-Metadata Exchange错误中的MSDN文档 URI：http://localhost:57358/WebServices/NewsRest.svc/getHomePageNews1元数据包含无法解析的引用：＆＃39; http://localhost:57358/WebServices/NewsRest.svc/getHomePageNews1＆＃39 ;.内容类型application / soap + xml; 服务http://localhost:57358/WebServices/NewsRest.svc/getHomePageNews1不支持charset = utf-8。客户端和服务绑定可能不匹配。远程服务器返回错误：（415）不支持的媒体类型.HTTP GET错误URI：http://localhost:57358/WebServices/NewsRest.svc/getHomePageNews1下载时出错＆＃39; http://localhost:57358/WebServices/NewsRest.svc/getHomePageNews1＆＃39 ;.请求失败，HTTP状态为400：错误请求。

请告诉我们这里发生了什么错误。

Answer 1

您必须添加到服务器配置以允许MEX（元数据交换），以便客户端可以检索生成的WSDL。像这样：

<service name="UPNews.WebServices.NewsRest" behaviorConfiguration="NewsRestBehavior">
    <endpoint address=""
          binding="basicHttpBinding"
          contract="UPNews.WebServices.INewsRest" />
    <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" />
  </service>

创建wcf .svc服务时出错

1 个答案: