我有一个对象A
,其中包含我在WCF中传输模型(通信)的属性Name
。
[DataMember(IsRequired = false, EmitDefaultValue = false, Name = "p0", Order = 0)]
public string Name { get; set; }
我发现当Name
以空格开头时#39} 123'然后在另一方面反序列化后,它已经失去了空间,它变成了“123”。
WCF服务使用MTOM消息编码。
这通常是对xml或wcf的已知效果吗?
在提供的答案的帮助下,我发现由于Mtom编码而删除了前导空格。实际上,当我删除Mtom时,前导空格被正确传输。
安全配置在我的方案中没有任何作用。
有没有办法避免它?
答案 0 :(得分:1)
更新:替换了答案,因为很明显您使用的是MTOM。
显然,这是WCF中的bug,根据this标记为“已延期”。所以很难说它何时会被修复。最后一个链接还提到了一些解决方法,我将在这里重现,以便它们不会迷路。
下面的代码显示了此问题的第三种解决方法:
public class Post_4cfd1cd6_a038_420d_8cb5_ec5a2628df1a
{
[ServiceContract]
public interface ITest
{
[OperationContract]
string Echo(string text);
}
public class Service : ITest
{
public string Echo(string text)
{
Console.WriteLine("In service, text = {0}", ReplaceControl(text));
return text;
}
}
static Binding GetBinding()
{
//var result = new WSHttpBinding(SecurityMode.None) { MessageEncoding = WSMessageEncoding.Text };
var result = new BasicHttpBinding() { MessageEncoding = WSMessageEncoding.Mtom };
return result;
}
static string ReplaceControl(string text)
{
StringBuilder sb = new StringBuilder();
foreach (var c in text)
{
if ((' ' <= c && c <= '~') && c != '\\')
{
sb.Append(c);
}
else
{
sb.AppendFormat("\\u{0:X4}", (int)c);
}
}
return sb.ToString();
}
public class MyInspector : IEndpointBehavior, IDispatchMessageInspector, IClientMessageInspector
{
public void AddBindingParameters(ServiceEndpoint endpoint, BindingParameterCollection bindingParameters)
{
}
public void ApplyClientBehavior(ServiceEndpoint endpoint, ClientRuntime clientRuntime)
{
clientRuntime.MessageInspectors.Add(this);
}
public void ApplyDispatchBehavior(ServiceEndpoint endpoint, EndpointDispatcher endpointDispatcher)
{
endpointDispatcher.DispatchRuntime.MessageInspectors.Add(this);
}
public void Validate(ServiceEndpoint endpoint)
{
}
public object AfterReceiveRequest(ref Message request, IClientChannel channel, InstanceContext instanceContext)
{
request = request.CreateBufferedCopy(int.MaxValue).CreateMessage();
return null;
}
public void BeforeSendReply(ref Message reply, object correlationState)
{
}
public void AfterReceiveReply(ref Message reply, object correlationState)
{
reply = reply.CreateBufferedCopy(int.MaxValue).CreateMessage();
}
public object BeforeSendRequest(ref Message request, IClientChannel channel)
{
return null;
}
}
public static void Test()
{
string baseAddress = "http://" + Environment.MachineName + ":8000/Service";
ServiceHost host = new ServiceHost(typeof(Service), new Uri(baseAddress));
var endpoint = host.AddServiceEndpoint(typeof(ITest), GetBinding(), "");
endpoint.Behaviors.Add(new MyInspector());
host.Open();
Console.WriteLine("Host opened");
ChannelFactory<ITest> factory = new ChannelFactory<ITest>(GetBinding(), new EndpointAddress(baseAddress));
factory.Endpoint.Behaviors.Add(new MyInspector());
ITest proxy = factory.CreateChannel();
string input = "\t\tDoc1\tCase1\tActive";
string output = proxy.Echo(input);
Console.WriteLine("Input = {0}, Output = {1}", ReplaceControl(input), ReplaceControl(output));
Console.WriteLine("input == output: {0}", input == output);
((IClientChannel)proxy).Close();
factory.Close();
Console.Write("Press ENTER to close the host");
Console.ReadLine();
host.Close();
}
}
同样,真正的答案和代码来自here。