BlobMessage doesn't work...

[Viali.Lee]

I download the ActiveMQ 5.0-SNAPSHOT and unzip it, then run
/bin/activemq.bat. 
After that, I wrote a Producer and Consumer to test the BlobMessage feature
of ActiveMQ 5.0-SNAPSHOT, but failed!!!

Producer.java:

import java.io.File;
import javax.jms.*;
import org.apache.activemq.*;
public class Producer 
{
        public static void main(String[] args) throws Exception 
        {
                ActiveMQConnectionFactory connectionFactory = new
ActiveMQConnectionFactory("tcp://localhost:61616");                     
                Connection connection = connectionFactory.createConnection();
                connection.start();
                ActiveMQSession session = (ActiveMQSession)
connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
                Destination destination = 
session.createQueue("message.larger.input");
                MessageProducer producer = session.createProducer(destination);
                BlobMessage message =  session.createBlobMessage(new
File("D://1.1K.Test.xml"));
                producer.send(message);         
                session.close();
                connection.close();
        }
}


Consumer.java:

import java.io.*;
import javax.jms.*;
import javax.jms.Message;
import org.apache.activemq.*;
public class Consumer 
{
        public static void main(String[] args) throws Exception 
        {
                ActiveMQConnectionFactory connectionFactory = new
ActiveMQConnectionFactory("tcp://localhost:61616");
                Connection connection = connectionFactory.createConnection();
                connection.start();
                ActiveMQSession session = (ActiveMQSession)
connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
                Destination destination = 
session.createQueue("message.larger.input");
                MessageConsumer consumer = session.createConsumer(destination);
                Message message = consumer.receive(10000);

                BlobMessage blobMessage = (BlobMessage) message;
                InputStream in = blobMessage.getInputStream();
                byte[] b = new byte[2048];
                File file = new File("D://result.xml");
                FileOutputStream out = new FileOutputStream(file);
                while (in.read(b) > 0) {
                        out.write(b);
                }
                out.close();
                session.close();
                connection.close();
        }
}

error:
Exception in thread "main" java.lang.NullPointerException
the inputstream received by Consumer is null.

who knows what happened??
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