WCF客户端从Java Web服务接收Date值，其中以XML格式发送给客户端的日期为：
<sampleDate>2010-05-10+14:00</sampleDate>
现在接收此日期的WCF客户端在时区（+08：00），当客户端反序列化Date值时，它将转换为以下DateTime值：
2010-05-09 18:00 +08：00
但是我们想忽略从服务器发送的+14：00，以便客户端中的序列化日期值为：
2010-05-10
请注意，+ 14：00不一致，可能是+10：00，+ 11:00等，因此无法在客户端使用DateTime转换来获取所需的日期值。
如何在WCF中轻松实现这一目标？
提前致谢。
正确的WCF解决方案是实现IClientMessageFormatter吗？
对我来说最干净的解决方案是按照上面的建议实现IClientMessageFormatter。这是一个例子：
C＃代码
public class ClientMessageFormatter : IClientMessageFormatter
{
IClientMessageFormatter original;
public ClientMessageFormatter(IClientMessageFormatter actual)
{
this.original = actual;
}
public void RemoveTimeZone(XmlNodeList nodeList)
{
if (nodeList != null)
{
foreach (XmlNode node in nodeList)
{
node.InnerText = Regex.Replace(node.InnerText, @"[\+\-]\d\d:\d\d", "");
}
}
}
#region IDispatchMessageFormatter Members
public object DeserializeReply(Message message, object[] parameters)
{
Message newMessage = null;
Message tempMessage;
MessageBuffer buffer;
MemoryStream ms;
XmlDocument doc;
XmlDictionaryReader reader;
XmlReader xr;
XmlWriter xw;
try
{
buffer = message.CreateBufferedCopy(int.MaxValue);
tempMessage = buffer.CreateMessage();
reader = tempMessage.GetReaderAtBodyContents();
if (reader != null)
{
doc = new XmlDocument();
doc.Load(reader);
reader.Close();
if (doc.DocumentElement != null)
{
/* enables switching between responses */
switch (doc.DocumentElement.LocalName)
{
case "sampleRootElement":
RemoveTimeZone(doc.DocumentElement.SelectNodes("childElement1/childElement2"));
break;
}
}
ms = new MemoryStream();
xw = XmlWriter.Create(ms);
doc.Save(xw);
xw.Flush();
xw.Close();
ms.Position = 0;
xr = XmlReader.Create(ms);
newMessage = Message.CreateMessage(message.Version, null, xr);
newMessage.Headers.CopyHeadersFrom(message);
newMessage.Properties.CopyProperties(message.Properties);
}
}
catch (Exception ex)
{
throw ex;
}
return original.DeserializeReply((newMessage != null) ? newMessage : message, parameters);
}
public Message SerializeRequest(MessageVersion messageVersion, object[] parameters)
{
return original.SerializeRequest(messageVersion, parameters);
}
#endregion
}
public class ClientOperationBehavior : IOperationBehavior
{
public void AddBindingParameters(OperationDescription description, BindingParameterCollection bindingParameters)
{
}
public void ApplyClientBehavior(OperationDescription description, ClientOperation proxy)
{
IClientMessageFormatter currentFormatter = proxy.Formatter;
proxy.Formatter = new ClientMessageFormatter(currentFormatter);
}
public void ApplyDispatchBehavior(OperationDescription description, DispatchOperation operation)
{
}
public void Validate(OperationDescription description)
{
}
}
public class ClientEndpointBehavior : IEndpointBehavior
{
#region IEndpointBehavior Members
public void AddBindingParameters(ServiceEndpoint endpoint, BindingParameterCollection bindingParameters)
{
}
public void ApplyClientBehavior(ServiceEndpoint endpoint, ClientRuntime clientRuntime)
{
foreach (OperationDescription operation in endpoint.Contract.Operations)
{
operation.Behaviors.Add(new ClientOperationBehavior());
}
}
public void ApplyDispatchBehavior(ServiceEndpoint endpoint, EndpointDispatcher endpointDispatcher)
{
}
public void Validate(ServiceEndpoint endpoint)
{
}
#endregion
}
public class ClientBehaviorExtensionElement : BehaviorExtensionElement
{
public override Type BehaviorType
{
get
{
return typeof(ClientEndpointBehavior);
}
}
protected override object CreateBehavior()
{
return new ClientEndpointBehavior();
}
}
的App.config / Web.config中
然后，客户端配置文件将使用上述格式化程序，如下所示：
<system.serviceModel>
....
....
<extensions>
<behaviorExtensions>
<add name="clientMessageFormatterBehavior" type="..." />
</behaviorExtensions>
</extensions>
<behaviors>
<endpointBehaviors>
<behavior name="clientMessageFormatterBehavior">
<clientMessageFormatterBehavior />
</behavior>
</endpointBehaviors>
</behaviors>
<client>
<endpoint address="https://www.domain.com/service" behaviorConfiguration="clientMessageFormatterBehavior" .... />
</client>
....
....
</system.serviceModel>
参考
答案 0 :(得分：4)
您的改进和更通用的解决方案
public static class TimeZoneMessageHelper
{
public static Message RemoveTimeZone(this Message message)
{
try
{
using (XmlDictionaryReader messageBodyReader = message.GetReaderAtBodyContents())
{
XmlDocument xmlDocument = new XmlDocument();
Message returnMessage = null;
xmlDocument.Load(messageBodyReader);
RemoveTimeZone(xmlDocument);
StringBuilder stringBuilder = new StringBuilder();
using(XmlWriter xmlWriter = XmlWriter.Create(stringBuilder))
{
xmlDocument.Save(xmlWriter);
}
// do not dispose to early
XmlReader resultMessageBodyReader = XmlReader.Create(new StringReader(stringBuilder.ToString()));
returnMessage = Message.CreateMessage(message.Version, null, resultMessageBodyReader);
returnMessage.Headers.CopyHeadersFrom(message);
returnMessage.Properties.CopyProperties(message.Properties);
return returnMessage;
}
}
}
private static void RemoveTimeZone(XmlNode xmlNode)
{
if (xmlNode.ChildNodes.Count == 0)
{
RemoveTimeZoneCore(xmlNode);
}
else
{
foreach(XmlNode node in xmlNode.ChildNodes)
RemoveTimeZone(node);
}
}
public static void RemoveTimeZoneCore(XmlNode xmlNode)
{
if (xmlNode != null)
{
if (Regex.IsMatch(xmlNode.InnerText, @"^\d\d\d\d-\d\d-\d\dT\d\d:\d\d:\d\d(\.\d\d)?(\+|-)\d\d:\d\d$", RegexOptions.Compiled))
{
xmlNode.InnerText = xmlNode.InnerText.Substring(0, xmlNode.InnerText.Length - 6);
}
}
}
}
public class RemoveTimeZoneClientMessageFormatter : IClientMessageFormatter
{
private readonly IClientMessageFormatter original;
public RemoveTimeZoneClientMessageFormatter(IClientMessageFormatter original)
{
this.original = original;
}
#region Implementation of IClientMessageFormatter
public Message SerializeRequest(MessageVersion messageVersion, object[] parameters)
{
return original.SerializeRequest(messageVersion, parameters).RemoveTimeZone();
}
public object DeserializeReply(Message message, object[] parameters)
{
return original.DeserializeReply(message.RemoveTimeZone() ?? message, parameters);
}
#endregion
}
public class RemoveTimeZoneDispatchMessageFormatter : IDispatchMessageFormatter
{
private readonly IDispatchMessageFormatter original;
public RemoveTimeZoneDispatchMessageFormatter(IDispatchMessageFormatter original)
{
this.original = original;
}
#region Implementation of IDispatchMessageFormatter
public void DeserializeRequest(Message message, object[] parameters)
{
original.DeserializeRequest(message.RemoveTimeZone() ?? message, parameters);
}
public Message SerializeReply(MessageVersion messageVersion, object[] parameters, object result)
{
return original.SerializeReply(messageVersion, parameters, result).RemoveTimeZone();
}
#endregion
}
public class RemoveTimeZoneEndpointBehavior : IEndpointBehavior
{
#region IEndpointBehavior Members
public void AddBindingParameters(ServiceEndpoint endpoint, BindingParameterCollection bindingParameters)
{
}
public void ApplyClientBehavior(ServiceEndpoint endpoint, ClientRuntime clientRuntime)
{
foreach (OperationDescription operation in endpoint.Contract.Operations)
{
operation.Behaviors.Add(new RemoveTimeZoneOperationBehavior());
}
}
public void ApplyDispatchBehavior(ServiceEndpoint endpoint, EndpointDispatcher endpointDispatcher)
{
foreach(OperationDescription operation in endpoint.Contract.Operations)
{
operation.Behaviors.Add(new RemoveTimeZoneOperationBehavior());
}
}
public void Validate(ServiceEndpoint endpoint)
{
}
#endregion
}
public class RemoveTimeZoneOperationBehavior : IOperationBehavior
{
public void AddBindingParameters(OperationDescription description, BindingParameterCollection bindingParameters)
{
}
public void ApplyClientBehavior(OperationDescription description, ClientOperation proxy)
{
proxy.Formatter = new RemoveTimeZoneClientMessageFormatter(proxy.Formatter);
}
public void ApplyDispatchBehavior(OperationDescription description, DispatchOperation operation)
{
operation.Formatter = new RemoveTimeZoneDispatchMessageFormatter(operation.Formatter);
}
public void Validate(OperationDescription description)
{
}
}
public class RemoveTimeZoneExtensionElement : BehaviorExtensionElement
{
public override Type BehaviorType
{
get
{
return typeof(RemoveTimeZoneEndpointBehavior);
}
}
protected override object CreateBehavior()
{
return new RemoveTimeZoneEndpointBehavior();
}
}\
答案 1 :(得分：2)
试试这个
DateTime newDate = DateTime.SpecifyKind(oldDate, DateTimeKind.Unspecified);
Coding Best Practices Using DateTime in the .NET Framework
相关链接
http://daveonsoftware.blogspot.com/2008/07/wcf-datetime-field-adjusted.html
http://social.msdn.microsoft.com/forums/en-US/wcf/thread/36ae825a-ffc6-4ac3-9981-c82692039d58