我在执行我的WCF消息拦截器时遇到了一些问题。基本上我正在访问正文内容,并在节点集上执行xslt变换以对它进行排序。如何编辑WCF消息 - WCF消息拦截器
我测试过XSLT样式表,它的工作没有问题。我将转换结果写入MemoryStream对象,然后尝试从流内容重新创建消息。
我考察使用一个StreamReader的所产生的数据流或加载到一个XmlDocument,我可以看到的XML它包含它从XSLT我预期的结果变换。当我尝试重新消息
我的问题occures!我创建一个基于流的XmlReader并将其用作Message.CreateMessage(.....)的身体源代码;
我不明白为什么我突然失去了“正确”的内容流中时,我可以检验一下,看看一对夫妇较早的语句。
非常感谢!下面的方法
全码:
public object AfterReceiveRequest(ref System.ServiceModel.Channels.Message request, IClientChannel channel, InstanceContext instanceContext)
{
MessageBuffer msgbuf = request.CreateBufferedCopy(int.MaxValue);
Message tmpMessage = msgbuf.CreateMessage();
XmlDictionaryReader xdr = tmpMessage.GetReaderAtBodyContents();
MemoryStream ms = new MemoryStream();
_compiledTransform.Transform(xdr,null,ms);
ms.Position = 0;
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(ms);
MemoryStream newStream = new MemoryStream();
xmlDoc.Save(newStream);
newStream.Position = 0;
//To debug contents of the stream
StreamReader sr = new StreamReader(newStream);
var temp = sr.ReadToEnd();
//At this point the XSLT tranforms has resulted in the fragment we want so all good!
XmlReaderSettings settings = new XmlReaderSettings();
settings.ConformanceLevel = ConformanceLevel.Fragment;
newStream.Position = 0;
XmlReader reader = XmlReader.Create(newStream,settings);
reader.MoveToContent();
//Reader seems to have lost the correct fragment!!! At least returned message does not contain correct fragment.
Message newMessage = Message.CreateMessage(request.Version, null, reader);
newMessage.Properties.CopyProperties(request.Properties);
request = newMessage;
return request;
}
你可以发表一个原始和转换的消息的例子吗? – carlosfigueira 2011-05-27 03:20:37