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Java > Open Source Codes > Receiver


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.
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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.
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25  * 5. Due credit should be given to the Exolab Project
26  * (http://www.exolab.org/).
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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
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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)
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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 (C) Exoffice Technologies Inc. All Rights Reserved.
42  *
43  * $Id: Receiver.java,v 1.1 2005/04/08 13:42:48 tanderson Exp $
44  */

45
46 import javax.naming.Context JavaDoc;
47 import javax.naming.InitialContext JavaDoc;
48 import javax.naming.NamingException JavaDoc;
49
50 import javax.jms.JMSException JavaDoc;
51 import javax.jms.Message JavaDoc;
52 import javax.jms.Destination JavaDoc;
53 import javax.jms.Connection JavaDoc;
54 import javax.jms.ConnectionFactory JavaDoc;
55 import javax.jms.Session JavaDoc;
56 import javax.jms.MessageConsumer JavaDoc;
57 import javax.jms.Session JavaDoc;
58 import javax.jms.TextMessage JavaDoc;
59
60
61 /**
62  * Synchronous <code>MessageConsumer</code> example.
63  *
64  * @author <a HREF="mailto:tma@netspace.net.au">Tim Anderson</a>
65  * @version $Revision: 1.1 $ $Date: 2005/04/08 13:42:48 $
66  */

67 public class Receiver {
68
69     /**
70      * Main line.
71      *
72      * @param args command line arguments
73      */

74     public static void main(String JavaDoc[] args) {
75         Context JavaDoc context = null;
76         ConnectionFactory JavaDoc factory = null;
77         Connection JavaDoc connection = null;
78         String JavaDoc factoryName = "ConnectionFactory";
79         String JavaDoc destName = null;
80         Destination JavaDoc dest = null;
81         int count = 1;
82         Session JavaDoc session = null;
83         MessageConsumer JavaDoc receiver = null;
84
85         if (args.length < 1 || args.length > 2) {
86             System.out.println("usage: Receiver <destination> [count]");
87             System.exit(1);
88         }
89
90         destName = args[0];
91         if (args.length == 2) {
92             count = Integer.parseInt(args[1]);
93         }
94
95         // Create the JNDI initial context.
96
try {
97             context = new InitialContext JavaDoc();
98         } catch (NamingException JavaDoc exception) {
99             System.err.println("Failed to create initial JNDI context: "
100                                + exception);
101             System.exit(1);
102         }
103
104         // Look up the ConnectionFactory
105
try {
106             factory = (ConnectionFactory JavaDoc) context.lookup(factoryName);
107         } catch (NamingException JavaDoc exception) {
108             System.err.println("Failed to look up connection factory: "
109                                + exception);
110             System.exit(1);
111         }
112
113         // Look up the Destination
114
try {
115             dest = (Destination JavaDoc) context.lookup(destName);
116         } catch (NamingException JavaDoc exception) {
117             System.err.println("Failed to look up destination: " + exception);
118             System.exit(1);
119         }
120
121         try {
122             // create the connection
123
connection = factory.createConnection();
124
125             // create the session
126
session = connection.createSession(
127                 false, Session.AUTO_ACKNOWLEDGE);
128
129             // create the receiver
130
receiver = session.createConsumer(dest);
131
132             // start the connection, to enable message receipt
133
connection.start();
134
135             for (int i = 0; i < count; ++i) {
136                 Message JavaDoc message = receiver.receive();
137                 if (message instanceof TextMessage JavaDoc) {
138                     TextMessage JavaDoc text = (TextMessage JavaDoc) message;
139                     System.out.println("Received: " + text.getText());
140                 } else if (message != null) {
141                     System.out.println("Received non text message");
142                 }
143             }
144
145         } catch (JMSException JavaDoc exception) {
146             System.err.println("JMS exception: " + exception);
147             System.exit(1);
148         } finally {
149             if (connection != null) {
150                 try {
151                     connection.close();
152                 } catch (JMSException JavaDoc exception) {
153                     System.err.println("Failed to close connection: "
154                                        + exception);
155                 }
156             }
157         }
158         System.exit(0);
159     }
160 }
161
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