View Javadoc

1   /***
2    * Redistribution and use of this software and associated documentation
3    * ("Software"), with or without modification, are permitted provided
4    * that the following conditions are met:
5    *
6    * 1. Redistributions of source code must retain copyright
7    *    statements and notices.  Redistributions must also contain a
8    *    copy of this document.
9    *
10   * 2. Redistributions in binary form must reproduce the
11   *    above copyright notice, this list of conditions and the
12   *    following disclaimer in the documentation and/or other
13   *    materials provided with the distribution.
14   *
15   * 3. The name "Exolab" must not be used to endorse or promote
16   *    products derived from this Software without prior written
17   *    permission of Exoffice Technologies.  For written permission,
18   *    please contact jima@intalio.com.
19   *
20   * 4. Products derived from this Software may not be called "Exolab"
21   *    nor may "Exolab" appear in their names without prior written
22   *    permission of Exoffice Technologies. Exolab is a registered
23   *    trademark of Exoffice Technologies.
24   *
25   * 5. Due credit should be given to the Exolab Project
26   *    (http://www.exolab.org/).
27   *
28   * THIS SOFTWARE IS PROVIDED BY EXOFFICE TECHNOLOGIES AND CONTRIBUTORS
29   * ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
30   * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
31   * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
32   * EXOFFICE TECHNOLOGIES OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
33   * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
34   * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
35   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
36   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
37   * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
38   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
39   * OF THE POSSIBILITY OF SUCH DAMAGE.
40   *
41   * Copyright 2004-2005 (C) Exoffice Technologies Inc. All Rights Reserved.
42   *
43   * $Id: Receiver.java,v 1.2 2005/11/18 03:28:01 tanderson Exp $
44   */
45  import javax.naming.Context;
46  import javax.naming.InitialContext;
47  import javax.naming.NamingException;
48  
49  import javax.jms.JMSException;
50  import javax.jms.Message;
51  import javax.jms.Destination;
52  import javax.jms.Connection;
53  import javax.jms.ConnectionFactory;
54  import javax.jms.Session;
55  import javax.jms.MessageConsumer;
56  import javax.jms.TextMessage;
57  
58  
59  /***
60   * Synchronous <code>MessageConsumer</code> example.
61   *
62   * @author <a href="mailto:tma@netspace.net.au">Tim Anderson</a>
63   * @version $Revision: 1.2 $ $Date: 2005/11/18 03:28:01 $
64   */
65  public class Receiver {
66  
67      /***
68       * Main line.
69       *
70       * @param args command line arguments
71       */
72      public static void main(String[] args) {
73          Context context = null;
74          ConnectionFactory factory = null;
75          Connection connection = null;
76          String factoryName = "ConnectionFactory";
77          String destName = null;
78          Destination dest = null;
79          int count = 1;
80          Session session = null;
81          MessageConsumer receiver = null;
82  
83          if (args.length < 1 || args.length > 2) {
84              System.out.println("usage: Receiver <destination> [count]");
85              System.exit(1);
86          }
87  
88          destName = args[0];
89          if (args.length == 2) {
90              count = Integer.parseInt(args[1]);
91          }
92  
93          try {
94              // create the JNDI initial context
95              context = new InitialContext();
96  
97              // look up the ConnectionFactory
98              factory = (ConnectionFactory) context.lookup(factoryName);
99  
100             // look up the Destination
101             dest = (Destination) context.lookup(destName);
102 
103             // create the connection
104             connection = factory.createConnection();
105 
106             // create the session
107             session = connection.createSession(
108                 false, Session.AUTO_ACKNOWLEDGE);
109 
110             // create the receiver
111             receiver = session.createConsumer(dest);
112 
113             // start the connection, to enable message receipt
114             connection.start();
115 
116             for (int i = 0; i < count; ++i) {
117                 Message message = receiver.receive();
118                 if (message instanceof TextMessage) {
119                     TextMessage text = (TextMessage) message;
120                     System.out.println("Received: " + text.getText());
121                 } else if (message != null) {
122                     System.out.println("Received non text message");
123                 }
124             }
125         } catch (JMSException exception) {
126             exception.printStackTrace();
127         } catch (NamingException exception) {
128             exception.printStackTrace();
129         } finally {
130             // close the context
131             if (context != null) {
132                 try {
133                     context.close();
134                 } catch (NamingException exception) {
135                     exception.printStackTrace();
136                 }
137             }
138 
139             // close the connection
140             if (connection != null) {
141                 try {
142                     connection.close();
143                 } catch (JMSException exception) {
144                     exception.printStackTrace();
145                 }
146             }
147         }
148     }
149 }