[英]Read WCF MSMQ Message from C#
我使用WCF客户端向WCF服务发送msmq消息,在WCF服务处理msmq消息之前,我想检查消息的正文。
在检查了msmq消息体的内容后,我得到了以下结果。
但是,我没能得到确切的字符串。
以下是WCF服务的定义
[ServiceContract]
public interface IMSMQService
{
[OperationContract(IsOneWay = true)]
void ShowMessage(string msg);
}
我使用下面的方法来检索邮件正文,并输出为空,如果我在ms上添加监视,我可以得到
“\\ 0 \\ U0001 \\ 0 \\ U0001 \\ U0004 \\ U0002(net.msmq:// VDI-V-tazho /私人/ TestQueue \\ U0003 \\ AV \\ U0002符\\ v \\ u0001s \\ U0004符\\ v \\ u0001a \\ u0006V \\ BD \\ n \\ u001e \\0 + http://tempuri.org/IMSMQService/ShowMessage@ \\ u0017VsDebuggerCausalityData \\ bAhttp://schemas.microsoft.com/vstudio/diagnostics/servicemodelsink < ϣ-lN FoJ 0 U \\ u0006 \\“\\ 0 \\ 0 \\ 0 \\ 0 \\ u0017 \\ 0i8CI \\ 7 ^ QA \\ u0012w} \\为fA \\ u000f \\ rޮPE \\ 0 \\吨\\ 0 \\ 0D \\˚F\\ u001e \\ 0(net.msmq:// VDI-v-tazho /私人/ TestQueue \\ u0001V \\ u000e @ \\ vShowMessage \\ b \\ u0013http://tempuri.org/@ \\ u0003msg \\ u0004test \\ U0001 \\ U0001 \\ U0001"
//message.Formatter = new XmlMessageFormatter(new String[] { });
//StreamReader sr = new StreamReader(message.BodyStream);
string ms = "";
//while (sr.Peek() >= 0)
//{
// ms += sr.ReadLine();
//}
message.Formatter = new ActiveXMessageFormatter();
string result = System.Text.Encoding.UTF8.GetString(message.Body as byte[]);
StreamReader reader = new StreamReader(message.BodyStream);
ms = reader.ReadToEnd();
MessageBox.Show(ms);
我得到了以下代码来实现我的要求。
private void MSMQStringBody_Click(object sender, EventArgs e)
{
System.Messaging.MessageQueue[] queueList = System.Messaging.MessageQueue.GetPrivateQueuesByMachine(Environment.MachineName);
MessageQueue myQueue = queueList[1];
List<System.Messaging.Message> messages = myQueue.GetAllMessages().ToList();
foreach (System.Messaging.Message message in messages)
{
System.Xml.XmlDocument result = ConvertToXMLDoc(message);
MessageBox.Show(result.InnerText);
}
}
public System.Xml.XmlDocument ConvertToXMLDoc(System.Messaging.Message msg)
{
byte[] buffer = new byte[msg.BodyStream.Length];
msg.BodyStream.Read(buffer, 0, (int)msg.BodyStream.Length);
int envelopeStart = FindEnvolopeStart(buffer);
System.IO.MemoryStream stream = new System.IO.MemoryStream(buffer, envelopeStart, buffer.Length - envelopeStart);
System.ServiceModel.Channels.BinaryMessageEncodingBindingElement elm = new System.ServiceModel.Channels.BinaryMessageEncodingBindingElement();
System.ServiceModel.Channels.Message msg1 = elm.CreateMessageEncoderFactory().Encoder.ReadMessage(stream, Int32.MaxValue);
System.Xml.XmlDocument doc = new System.Xml.XmlDocument();
doc.Load(msg1.GetReaderAtBodyContents());
msg.BodyStream.Position = 0;
return doc;
}
private int FindEnvolopeStart(byte[] stream)
{
int i = 0;
byte prevByte = stream[i];
byte curByte = (byte)0;
for (i = 0; i < stream.Length; i++)
{
curByte = stream[i];
if (curByte == (byte)0x02 &&
prevByte == (byte)0x56)
break;
prevByte = curByte;
}
return i - 1;
}
当您向/从MSMQ发送/检索消息正文时,您应该使用相同的“类型”。 请参阅下面的通用类型“T”。 T可以是您的任何自定义类。
public T GetQueueMessage()
{
Message message = queue.Receive(new TimeSpan(0, 0, 0, 1, 0));
return (T)message.Body;
}
public void InsertQueueMessage(T message)
{
using (Message msg = new Message((object)message))
{
queue.Send(msg, MessageQueueTransactionType.Single);
}
}
我知道问题是C#代码,但我在这里包括Powershell脚本,对于那些喜欢使用shell快速检查MSMQ内容的人。 使用Edward的代码我也使用Powershell进行了这项工作,如果有人正在寻找一个脚本,可以使用协议绑定NetMsmqbinding或NetMsmqIntegrationBinding来提取这些作为有效负载发送的WCF消息到端点的WCF服务。
而不是使用Int32.MaxValue,我使用了另一个大整数值,我知道在大多数情况下就足够了。 很高兴知道顺便找到Soap Envelope背后的逻辑。
这是Powershell脚本:
[System.Reflection.Assembly]::LoadWithPartialName("System.Messaging") | Out-Null
[System.Reflection.Assembly]::LoadWithPartialName("System.Xml") | Out-Null
[System.Reflection.Assembly]::LoadWithPartialName("System.ServiceModel") | Out-Null
[System.Reflection.Assembly]::LoadWithPartialName("System.IO") | Out-Null
$queuePath = ".\private$\demoqueue4"
Write-Host "Powershell MSMQ queue WCF inspector v0.1. Inspecting queue contents of the queue: $queuePath"
Write-Host ""
Run-MainDemoIterateMsmq $queuePath
Function Get-XmlFromWcfMessage([System.Messaging.Message] $msg) {
$doc = New-Object System.Xml.XmlDocument;
$messageLength = [int] $msg.BodyStream.Length
$buffer = New-Object byte[] $messageLength
$msg.BodyStream.Read($buffer, 0, $messageLength)
$envelopeStart = Find-SoapEnvelopeStart($buffer)
$envelopeStart = $envelopeStart - 0
$envelopeLength = $($buffer.Length - $envelopeStart)
#Write-Host $envelopeStart
$stream = New-Object System.IO.MemoryStream($buffer, $envelopeStart, $envelopeLength)
$elm = New-Object System.ServiceModel.Channels.BinaryMessageEncodingBindingElement
$elm.ReaderQuotas.MaxStringContentLength = 10000000
$elm.ReaderQuotas.MaxBytesPerRead = 10000000
$msg1 = $elm.CreateMessageEncoderFactory().Encoder.ReadMessage($stream, 10000000);
$doc.Load($msg1.GetReaderAtBodyContents());
$msg.BodyStream.Position = 0;
return $doc;
}
Function Find-SoapEnvelopeStart([byte[]] $stream)
{
$i = 0;
$j = 0;
$prevByte = $stream[$i];
$curByte = [byte]$j;
for ($i = 0; $i -lt $stream.Length; $i++)
{
$curByte = $stream[$i];
if ($curByte -eq [byte] 0x02 -and $prevByte -eq [byte] 0x56) {
break;
}
$prevByte = $curByte;
}
return $i - 1;
}
Function Run-MainDemoIterateMsmq([string] $queuePath) {
$queue = New-Object System.Messaging.MessageQueue $queuePath
foreach ($message in $queue.GetAllMessages()){
$xmlDoc = Get-XmlFromWcfMessage $message
Write-Host $xmlDoc.OuterXml
}
}
然后输出可能如下所示:
<SendMessage xmlns="http://tempuri.org/"><message>this is another test!</message></SendMessage>
<SendMessage xmlns="http://tempuri.org/"><message>why hello srmp</message></SendMessage>
<SendMessage xmlns="http://tempuri.org/"><message>test</message></SendMessage>
<SendMessage xmlns="http://tempuri.org/"><message>my message to msmq</message></SendMessage>
<SendMessage xmlns="http://tempuri.org/"><message>This is a new message!</message></SendMessage>
<SendMessage xmlns="http://tempuri.org/"><message>Another message to MSMQ! </message></SendMessage>
<SendMessage xmlns="http://tempuri.org/"><message>another test here</message></SendMessage>
<SendMessage xmlns="http://tempuri.org/"><message>This is a test message that will be sent using NetMsmqBinding. </message></SendMessage>
<SendMessageDataContract xmlns="http://tempuri.org/"><message xmlns:b="http://schemas.datacontract.org/2004/07/WcfDemoNetMsmqBinding.Host" xmlns:i="http://www.w3.org/2001
/XMLSchema-instance"><b:BoolValue>true</b:BoolValue><b:StringValue>This is a test of a stringvalue for a CompositeType</b:StringValue></message></SendMessageDataContract>
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