c# - 为了使 UploadPhotoStream 操作中的请求成为流，该操作必须有一个类型为 Stream 的参数

Question

我一直在搜索这个问题，但仍然找不到确切的解决方案。

代码:

namespace StackSample.Logic
{
    [ServiceHeaderBehavior]
    [MerchantHeaderBehavior]
    [AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)]
    public class Merchant : Interfaces.IMerchant
    {
        public bool UploadPhotoStream(string productid, string photoid, Stream fileData)
        {
            Logic.Components.Product ca = new Logic.Components.Product();
            return ca.UploadPhotoStream(Common.UserValues().Merchant, productid, photoid, fileData);
        }
    }
}

namespace StackSample.Interfaces
{
    [ServiceContract]
    public interface IMerchant
    {
        [OperationContract]
        [WebInvoke(UriTemplate = "UploadPhotoStream?productid={productid}&photoid={photoid}", Method = "POST")]
        bool UploadPhotoStream(string productid, string photoid, Stream fileData);
    }
}  

配置:

<bindings>
  <basicHttpBinding>
    <binding name="SOAPSecure">
      <security mode="None" />
      <readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="2097152" maxBytesPerRead="4096" maxNameTableCharCount="2097152" />
    </binding>
    <binding name="SOAPSecureTransfer" transferMode="Streamed" closeTimeout="00:05:00" openTimeout="00:05:00" receiveTimeout="00:15:00" sendTimeout="00:01:00" allowCookies="false" bypassProxyOnLocal="false" hostNameComparisonMode="StrongWildcard" maxBufferPoolSize="2147483647" maxReceivedMessageSize="2147483647" messageEncoding="Mtom" textEncoding="utf-8" useDefaultWebProxy="true">
      <readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="2147483647" maxBytesPerRead="4096" maxNameTableCharCount="2147483647" />
      <security mode="None">
        <transport clientCredentialType="None" proxyCredentialType="None" realm="" />
      </security>
    </binding>
  </basicHttpBinding>
  <webHttpBinding>
    <binding name="RESTSecure">
      <security mode="None">
        <transport clientCredentialType="None" proxyCredentialType="None" realm="" />
      </security>
    </binding>
    <binding name="RESTSecureTransfer" transferMode="Streamed" closeTimeout="00:05:00" openTimeout="00:05:00" receiveTimeout="00:15:00" sendTimeout="00:01:00" allowCookies="false" bypassProxyOnLocal="false" hostNameComparisonMode="StrongWildcard" maxBufferPoolSize="2147483647" maxReceivedMessageSize="2147483647" useDefaultWebProxy="true">
      <readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="2147483647" maxBytesPerRead="4096" maxNameTableCharCount="2147483647" />
      <security mode="None">
        <transport clientCredentialType="None" proxyCredentialType="None" realm="" />
      </security>
    </binding>
  </webHttpBinding>
</bindings>
<!-- behaviors -->
<behaviors>
  <endpointBehaviors>
    <behavior name="JSON">
      <webHttp defaultOutgoingResponseFormat="Json" />
    </behavior>
  </endpointBehaviors>
  <serviceBehaviors>
    <behavior name="Default">
      <serviceMetadata httpGetEnabled="true" />
      <serviceDebug httpHelpPageEnabled="true" includeExceptionDetailInFaults="true" />
    </behavior>
  </serviceBehaviors>
</behaviors>
<serviceHostingEnvironment aspNetCompatibilityEnabled="true" multipleSiteBindingsEnabled="true" />


<services>  
  <service behaviorConfiguration="Default" name="StackSample.Logic.Merchant">
    <endpoint address="soap" binding="basicHttpBinding" bindingConfiguration="SOAPSecureTransfer" contract="StackSample.Interfaces.IMerchant" />
    <endpoint address="rest" behaviorConfiguration="JSON" binding="webHttpBinding" bindingConfiguration="RESTSecureTransfer" contract="StackSample.Interfaces.IMerchant" />
  </service>
</services>  

当我尝试运行 http://localhost:64039/Merchant/Merchant.svc
它显示错误:

For request in operation UploadPhotoStream to be a stream the operation must have a single parameter whose type is Stream.  

我不知道该怎么做。

Answer 1

对于 future 的观众，如果你想实现这个目标，其中你将可以将多个参数与Stream放在一起，你需要做的是避免使用SVC 文件来创建 Rest 或 Soap 服务。而是将其添加到您的服务项目、Global.asax 文件、生成路由表中，例如:

public class Global : System.Web.HttpApplication
{
    RouteTable.Routes.Add(new ServiceRoute("MyApp/rest/Photo", new WebServiceHostFactory(), typeof(PhotoComponent)));
}  

在您的网络服务中:

[AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)]
public class PhotoComponent : Interfaces.IPhotoComponent
{
    public bool UploadPhotoStream(string productid, string photoid, Stream fileData)
    {
        // some code....
    }
}

[ServiceContract]
public interface PhotoComponent
{
    [OperationContract]
    [WebInvoke(UriTemplate = "UploadPhotoStream/{productid}/{photoid}", Method = "POST")]
    bool UploadPhotoStream(string productid, string photoid, System.IO.Stream fileData);
}  

在 web.config 中:

<services>  
  <service behaviorConfiguration="Default" name="StackSample.Logic.PhotoComponent">
    <endpoint behaviorConfiguration="JSON" binding="webHttpBinding" bindingConfiguration="RESTSecureTransfer" contract="StackSample.Interfaces.PhotoComponent" />
  </service>
</services>   

并称它为:

https://127.0.0.1/MyApp/rest/Photo/UploadPhotoStream/{productid}/{photoid}  

希望对您有所帮助。