Feature
Java & .NET: SOAP Over JMS Interoperability
Exposing a Java Web Service via JMS using Apache Axis 1.4 and consuming it from both Java and .NET clients
Mar. 3, 2008 06:00 AM
Next, we attach the SOAP as a byte array to a message and send it to the queue/topic.
IBytesMessage message = session.CreateBytesMessage();
message.Content = bytBody;
//Give the address of our temporary queue
// so the service knows where to send the response
message.NMSReplyTo = queue;
using (IMessageProducer producer = session.CreateProducer())
{ NmsDestinationAccessor destinationResolver = new NmsDestinationAccessor();
IDestination destination = destinationResolver.ResolveDestinationName(session, _queueName);
producer.Send(destination, message);
}
Now we wait for a response. We set a timeout (as a
TimeSpan). Here it's a fixed value of 10 seconds for illustration, but
it could easily come from a config file or passed as a property in the
ActiveMqWebRequestCreate.
IBytesMessage response = (IBytesMessage)
consumer.Receive(
TimeSpan.FromSeconds(10))
as IBytesMessage;
stream = new MemoryStream();
stream.Write(response.Content, 0, response.Content.Length);
} } }
catch (NMSException e)
{ throw (e); }
finally
{ m_RequestStream.InternalClose(); }
ActiveMqQueueWebResponse resp = new ActiveMqQueueWebResponse();
Here we set the stream to our own.
resp.SetDownloadStream(stream);
return resp;
}
Our ActiveMqWebResponse class inherits
System.Net.WebResponse and does little more than provide a setter and
override the getter on the response stream, since the stream in the
built-in WebResponse is read-only.
public class ActiveMqQueueWebResponse : WebResponse
{
private Stream m_ResponseStream;
private long m_lngContentLength;
...
internal void SetDownloadStream(Stream vobjResponseStream)
{ m_ResponseStream = vobjResponseStream;
m_ResponseStream.Position = 0; // Rewind the stream
m_lngContentLength = m_ResponseStream.Length;
}
public override Stream GetResponseStream()
{ return m_ResponseStream;
} }
ActiveMqWebRequestCreate
ActiveMqWebRequestCreate
is a class that is used to create instances of our objects instead of
the built-in ones for a particular URI prefix. We'll see how this is
used in the client application.
public class ActiveMqQueueWebRequestCreate : IWebRequestCreate
{
This has the same properties that are on the ActiveMqWebRequest so it can set them when it instantiates the requests.
...
public WebRequest Create(System.Uri uri)
{ ActiveMqQueueWebRequest request = new ActiveMqQueueWebRequest(
uri, _queueAddress, _queueName, _username, _password);
return request;
} }
About Stanimir StanevStanimir Stanev is a senior consultant at MomentumSI's Enterprise Architecture Solutions practice. He has many years of experience focusing on providing enterprise architecture and strategy expertise to companies looking to migrate to or maximize the advantages of SOA principles.
About Rob BartlettRob Bartlett is a senior consultant at MomentumSI's Software Development Solutions practice. He has over a decade of experience in technical roles, guiding major corporations in the design, implementation, and integration of business solutions.