我正在尝试从 WCF 服务返回图像。
IService1.cs 代码:
[ServiceContract(Namespace = "http://Microsoft.ServiceModel.Samples")]
public interface IService1
{
[OperationContract]
[WebGet]
[WebInvoke(BodyStyle = WebMessageBodyStyle.WrappedRequest)]
Stream GetImage(int width, int height);
}
service1.cs 代码:
namespace SecondService
{
public class Service1 : IService1
{
public Stream GetImage(int width, int height)
{
// Although this method returns a jpeg, it can be
// modified to return any data you want within the stream
Bitmap bitmap = new Bitmap(width, height);
for (int I = 0; I < bitmap.Width; I++)
{
for (int j = 0; j < bitmap.Height; j++)
{
bitmap.SetPixel(I, j, (Math.Abs(I - j) < 2) ? Color.Blue : color.Yellow);
}
}
MemoryStream ms = new MemoryStream();
bitmap.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);
ms.Position = 0;
System.ServiceModel.Channels.TcpTransportBindingElement transport = new
System.ServiceModel.Channels.TcpTransportBindingElement();
transport.TransferMode = TransferMode.Streamed;
WebOperationContext.Current.OutgoingResponse.ContentType = "image/jpeg";
return ms;
}
}
}
这是我的调用页面的 web.config:
<system.serviceModel>
<bindings>
<wsHttpBinding>
<binding name="WSHttpBinding_IService1"
closeTimeout="00:01:00" openTimeout="00:01:00"
receiveTimeout="00:10:00" sendTimeout="00:01:00"
bypassProxyOnLocal="false" transactionFlow="false"
hostNameComparisonMode="StrongWildcard"
maxBufferPoolSize="524288" maxReceivedMessageSize="65536"
textEncoding="utf-8" useDefaultWebProxy="true"
allowCookies="false">
<readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384"
maxBytesPerRead="4096" maxNameTableCharCount="16384" />
<reliableSession ordered="true" inactivityTimeout="00:10:00"
enabled="false" />
<security mode="Message">
<transport clientCredentialType="Windows" proxyCredentialType="None"
realm="" />
<message clientCredentialType="Windows" negotiateServiceCredential="true"
algorithmSuite="Default" />
</security>
</binding>
</wsHttpBinding>
</bindings>
<client>
<endpoint address="http://localhost:8732/Design_Time_Addresses/SecondService/Service1/"
binding="wsHttpBinding" bindingConfiguration="WSHttpBinding_IService1"
contract="ServiceReference1.IService1" name="WSHttpBinding_IService1">
<identity>
<dns value="localhost" />
</identity>
</endpoint>
</client>
</system.serviceModel>
当我调用该服务时,我收到以下错误:
响应消息的内容
image/jpeg
类型与绑定的内容类型 ( ) 不匹配application/soap+xml; charset=utf-8
。如果使用自定义编码器,请确保IsContentTypeSupported
正确实施该方法。
我是 WCF 服务的新手,希望为 WCF 初学者提供有用的链接。