Jboss7 JMS demo

JMS P2P Pub/Sub 实现

最新推荐文章于 2022-09-01 16:27:50 发布

原创最新推荐文章于 2022-09-01 16:27:50 发布 · 241 阅读

0 ·

CC 4.0 BY-SA版权

文章标签：

#JBOSS7 #JMS #HornetQ

JMS 专栏收录该内容

1 篇文章

订阅专栏

本文介绍如何在JBoss7上实现Java消息服务（JMS）的点对点(P2P)和发布订阅(Pub/Sub)模式。通过配置HornetQ中间件，演示了创建连接工厂、目的地、生产者和消费者的步骤，并提供了完整的代码示例。

最近温习了下EJB和JMS，整理了下思路，和大家分享下P2P和Pub/Sub的demo :arrow: ；JBoss 7 集成了HornetQ，JMS可以在HornetQ中间件运行，有时间在和大家分享关于HornetQ的文章。

1.下载Jboss 7并配置运行环境 http://www.jboss.org/jbossas/downloads
2.增加testjms用户（用以jms链接时使用），在jboss的bin目录下运行add-user.bat，如下：
[img]http://dl.iteye.com/upload/attachment/0071/0012/60e1796e-f05a-3b28-8431-2d85074536d8.jpg[/img]
3.修改启动配置文件，使用standalone-full.xml启动jboss服务器


$JBOSS_HOME$\bin>standalone.bat --server-config=standalone-full.xml

4.例子：修改Jboss配置文件standalone-full.xml，找到hornetq-server节点，在该节点下的jms-destinations确定含有以下配置：


<jms-destinations>
                    <jms-queue name="testQueue">
                        <entry name="queue/test"/>
                        <entry name="java:jboss/exported/jms/queue/test"/>
                    </jms-queue>
                    <jms-topic name="ServerNotificationTopic">
                        <entry name="topic/ServerNotification"/>
                        <entry name="java:jboss/exported/jms/topic/ServerNotification"/>
                    </jms-topic>
                </jms-destinations>

[b]P2P demo[/b]


package org.jboss.as.quickstarts.jms;

import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import java.util.logging.Logger;
import java.util.Properties;

import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.Destination;
import javax.jms.MessageConsumer;
import javax.jms.MessageProducer;
import javax.jms.Session;
import javax.jms.TextMessage;
import javax.naming.Context;
import javax.naming.InitialContext;

public class JMSProducer {
    private static final Logger log = Logger.getLogger(JMSProducer.class.getName());

    // Set up all the default values
    private static final String DEFAULT_MESSAGE = "Hello, World!";
    private static final String DEFAULT_CONNECTION_FACTORY = "jms/RemoteConnectionFactory";
    private static final String DEFAULT_DESTINATION = "jms/queue/test";
    private static final String DEFAULT_MESSAGE_COUNT = "1";
    private static final String DEFAULT_USERNAME = "testjms";
    private static final String DEFAULT_PASSWORD = "123456";
    private static final String INITIAL_CONTEXT_FACTORY = "org.jboss.naming.remote.client.InitialContextFactory";
    private static final String PROVIDER_URL = "remote://localhost:4447";

    public static void main(String[] args) throws Exception {

        ConnectionFactory connectionFactory = null;
        Connection connection = null;
        Session session = null;
        MessageProducer producer = null;
        Destination destination = null;
        TextMessage message = null;
        Context context = null;

        try {
            // Set up the context for the JNDI lookup
            final Properties env = new Properties();
            env.put(Context.INITIAL_CONTEXT_FACTORY, INITIAL_CONTEXT_FACTORY);
            env.put(Context.PROVIDER_URL, System.getProperty(Context.PROVIDER_URL, PROVIDER_URL));
            env.put(Context.SECURITY_PRINCIPAL, System.getProperty("username", DEFAULT_USERNAME));
            env.put(Context.SECURITY_CREDENTIALS, System.getProperty("password", DEFAULT_PASSWORD));
            context = new InitialContext(env);

            // Perform the JNDI lookups
            String connectionFactoryString = System.getProperty("connection.factory", DEFAULT_CONNECTION_FACTORY);
            log.info("Attempting to acquire connection factory \"" + connectionFactoryString + "\"");
            connectionFactory = (ConnectionFactory) context.lookup(connectionFactoryString);
            log.info("Found connection factory \"" + connectionFactoryString + "\" in JNDI");

            String destinationString = System.getProperty("destination", DEFAULT_DESTINATION);
            log.info("Attempting to acquire destination \"" + destinationString + "\"");
            destination = (Destination) context.lookup(destinationString);
            log.info("Found destination \"" + destinationString + "\" in JNDI");

            // Create the JMS connection, session, producer, and consumer
            connection = connectionFactory.createConnection(System.getProperty("username", DEFAULT_USERNAME), System.getProperty("password", DEFAULT_PASSWORD));
            session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
            producer = session.createProducer(destination);
            connection.start();

            int count = Integer.parseInt(System.getProperty("message.count", DEFAULT_MESSAGE_COUNT));
            String content = System.getProperty("message.content", DEFAULT_MESSAGE);

            log.info("Sending " + count + " messages with content: " + content);


            // Send the specified number of messages
            for (int i = 0; i < count; i++) {
                message = session.createTextMessage(content);
                producer.send(message);
            }

            //等待30秒退出
    		CountDownLatch latch = new CountDownLatch(1);		
    		latch.await(30, TimeUnit.SECONDS);

        } catch (Exception e) {
            log.severe(e.getMessage());
            throw e;
        } finally {
            if (context != null) {
                context.close();
            }

            // closing the connection takes care of the session, producer, and consumer
            if (connection != null) {
                connection.close();
            }
        }
    }
}

[img]http://dl.iteye.com/upload/attachment/0071/0087/79ce1b6a-c0c9-33f0-b4b6-723541c3d100.jpg[/img]


package org.jboss.as.quickstarts.jms;

import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import java.util.logging.Logger;
import java.util.Properties;

import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.Destination;
import javax.jms.MessageConsumer;
import javax.jms.MessageProducer;
import javax.jms.Session;
import javax.jms.TextMessage;
import javax.naming.Context;
import javax.naming.InitialContext;

public class JMSConsumer {
    private static final Logger log = Logger.getLogger(JMSConsumer.class.getName());

    // Set up all the default values

    private static final String DEFAULT_CONNECTION_FACTORY = "jms/RemoteConnectionFactory";
    private static final String DEFAULT_DESTINATION = "jms/queue/test";
    private static final String DEFAULT_USERNAME = "testjms";
    private static final String DEFAULT_PASSWORD = "123456";
    private static final String INITIAL_CONTEXT_FACTORY = "org.jboss.naming.remote.client.InitialContextFactory";
    private static final String PROVIDER_URL = "remote://localhost:4447";

    public static void main(String[] args) throws Exception {

        ConnectionFactory connectionFactory = null;
        Connection connection = null;
        Session session = null;
        MessageConsumer consumer = null;
        Destination destination = null;
        TextMessage message = null;
        Context context = null;

        try {
            // Set up the context for the JNDI lookup
            final Properties env = new Properties();
            env.put(Context.INITIAL_CONTEXT_FACTORY, INITIAL_CONTEXT_FACTORY);
            env.put(Context.PROVIDER_URL, System.getProperty(Context.PROVIDER_URL, PROVIDER_URL));
            env.put(Context.SECURITY_PRINCIPAL, System.getProperty("username", DEFAULT_USERNAME));
            env.put(Context.SECURITY_CREDENTIALS, System.getProperty("password", DEFAULT_PASSWORD));
            context = new InitialContext(env);

            // Perform the JNDI lookups
            String connectionFactoryString = System.getProperty("connection.factory", DEFAULT_CONNECTION_FACTORY);
            log.info("Attempting to acquire connection factory \"" + connectionFactoryString + "\"");
            connectionFactory = (ConnectionFactory) context.lookup(connectionFactoryString);
            log.info("Found connection factory \"" + connectionFactoryString + "\" in JNDI");

            String destinationString = System.getProperty("destination", DEFAULT_DESTINATION);
            log.info("Attempting to acquire destination \"" + destinationString + "\"");
            destination = (Destination) context.lookup(destinationString);
            log.info("Found destination \"" + destinationString + "\" in JNDI");

            // Create the JMS connection, session, producer, and consumer
            connection = connectionFactory.createConnection(System.getProperty("username", DEFAULT_USERNAME), System.getProperty("password", DEFAULT_PASSWORD));
            session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
            consumer = session.createConsumer(destination);
            connection.start();

            //等待30秒退出
    		CountDownLatch latch = new CountDownLatch(1);		

            // Then receive the same number of messaes that were sent
           while(message == null) {
        	    log.info("----receive message");
                message = (TextMessage) consumer.receive(5000);    
                latch.await(1, TimeUnit.SECONDS);
           }
           log.info("====Received message with content " + message.getText());

        } catch (Exception e) {
            log.severe(e.getMessage());
            throw e;
        } finally {
            if (context != null) {
                context.close();
            }

            // closing the connection takes care of the session, producer, and consumer
            if (connection != null) {
                connection.close();
            }
        }
    }
}

[img]http://dl.iteye.com/upload/attachment/0071/0085/6fdc6ccc-2aa8-3fb7-b45d-77c45e7d7d1c.jpg[/img]

[b]Pub/Sub demo[/b]


package com.lym.jms;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Properties;

import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.Session;
import javax.jms.TextMessage;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;

public class JMSPub {
    private static final String DEFAULT_USERNAME = "testjms";
    private static final String DEFAULT_PASSWORD = "123456";
    private static final String INITIAL_CONTEXT_FACTORY = "org.jboss.naming.remote.client.InitialContextFactory";
    private static final String PROVIDER_URL = "remote://localhost:4447";

	/**
	 * @param args
	 * @throws NamingException 
	 * @throws JMSException 
	 * @throws IOException 
	 */
	public static void main(String[] args) throws NamingException, JMSException, IOException {
		final Properties env = new Properties();
        env.put(Context.INITIAL_CONTEXT_FACTORY, INITIAL_CONTEXT_FACTORY);
        env.put(Context.PROVIDER_URL, System.getProperty(Context.PROVIDER_URL, PROVIDER_URL));
        env.put(Context.SECURITY_PRINCIPAL, System.getProperty("username", DEFAULT_USERNAME));
        env.put(Context.SECURITY_CREDENTIALS, System.getProperty("password", DEFAULT_PASSWORD));
		InitialContext context = new InitialContext(env);


		// 1) lookup connection factory (local JNDI lookup, no credentials required)
		javax.jms.ConnectionFactory cf = (javax.jms.ConnectionFactory)context.lookup("jms/RemoteConnectionFactory");

		// 2) create a connection to the remote provider
		javax.jms.Connection connection = cf.createConnection(DEFAULT_USERNAME, DEFAULT_PASSWORD);

		// 3) create session session
		boolean transacted = false;
		javax.jms.Session session = connection.createSession(transacted, Session.AUTO_ACKNOWLEDGE);

		/**
		 * 在standalone-full.xml中找到
		 * <subsystem xmlns="urn:jboss:domain:messaging:1.1">
		 * 节点下找到<jms-destinations>节点，增加
		 *  <jms-topic name="ServerNotificationTopic">
                <entry name="topic/ServerNotification"/>
                <entry name="java:jboss/exported/jms/topic/ServerNotification"/>
            </jms-topic>
		 */
		// 4) "create" the queue/topic (using the topic name - not JNDI)
		//javax.jms.Topic topic = session.createTopic("ServerNotificationTopic");
		javax.jms.Topic topic = (javax.jms.Topic)context.lookup("jms/topic/ServerNotification");		
		// 5) create producer
		//javax.jms.MessageProducer producer = session.createProducer(topic);

		Destination destination = (Destination) context.lookup("jms/topic/ServerNotification");
		javax.jms.MessageProducer producer = session.createProducer(destination);

		BufferedReader msgStream = new BufferedReader(new InputStreamReader(  
                System.in));  
        String line = null;  
		boolean quitNow = false;  
        do {  
            System.out.print("Enter message (\"quit\" to quit): ");  
            line = msgStream.readLine();  
            if (line != null && line.trim().length() != 0) {  

            	// 6) create message
				TextMessage textMessage = session.createTextMessage();
				textMessage.setText(line);

				// 7) send message
				producer.send(textMessage);

                quitNow = line.equalsIgnoreCase("quit");  
            }  
        } while (!quitNow);  


	}

}

[img]http://dl.iteye.com/upload/attachment/0071/0091/03040566-ed87-316e-af68-30fde7c25597.jpg[/img]


package com.lym.jms;

import java.util.Properties;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;

import javax.jms.JMSException;
import javax.jms.Session;
import javax.jms.TextMessage;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;

public class JMSSub {

	private static final String DEFAULT_USERNAME = "testjms";
    private static final String DEFAULT_PASSWORD = "123456";
    private static final String INITIAL_CONTEXT_FACTORY = "org.jboss.naming.remote.client.InitialContextFactory";
    private static final String PROVIDER_URL = "remote://localhost:4447";

	/**
	 * @param args
	 * @throws NamingException 
	 * @throws JMSException 
	 * @throws InterruptedException 
	 */
	public static void main(String[] args) throws NamingException, JMSException, InterruptedException {
		final Properties env = new Properties();
        env.put(Context.INITIAL_CONTEXT_FACTORY, INITIAL_CONTEXT_FACTORY);
        env.put(Context.PROVIDER_URL, System.getProperty(Context.PROVIDER_URL, PROVIDER_URL));
        env.put(Context.SECURITY_PRINCIPAL, System.getProperty("username", DEFAULT_USERNAME));
        env.put(Context.SECURITY_CREDENTIALS, System.getProperty("password", DEFAULT_PASSWORD));
		InitialContext context = new InitialContext(env);

//		javax.jms.Topic topic = (javax.jms.Topic)context.lookup("jms/topic/ServerNotification");		 

		// 1) lookup connection factory (local JNDI lookup, no credentials required)
		javax.jms.ConnectionFactory cf = (javax.jms.ConnectionFactory)context.lookup("jms/RemoteConnectionFactory");

		// 2) create a connection to the remote provider
		javax.jms.Connection connection = cf.createConnection(DEFAULT_USERNAME, DEFAULT_PASSWORD);

		// 3) create session session
		boolean transacted = false;
		javax.jms.Session session = connection.createSession(transacted, Session.AUTO_ACKNOWLEDGE);

		// 4) "create" the queue/topic (using the topic name - not JNDI)
		javax.jms.Topic topic = session.createTopic("ServerNotificationTopic");

		// 5) create consumer
		javax.jms.MessageConsumer consumer = session.createConsumer(topic); // messageSelector is optional

		// 6) set listener
		consumer.setMessageListener(new javax.jms.MessageListener() {
		  public void onMessage(javax.jms.Message message)
		  {
		    try {
		    	TextMessage tm = (TextMessage)message;

				System.out.println("received message content: "+tm.getText().toString());
				System.out.println("getJMSDestination: "+tm.getJMSDestination());
				System.out.println("getJMSReplyTo: "+tm.getJMSReplyTo());
				System.out.println("getJMSMessageID: "+tm.getJMSMessageID());
				System.out.println("getJMSRedelivered: "+tm.getJMSRedelivered());

			} catch (JMSException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}  
		  }
		});

		// 7) listen for messages (start the connection)
		connection.start();

		//等待30秒退出
		CountDownLatch latch = new CountDownLatch(1);		
		latch.await(30, TimeUnit.SECONDS);


	}


}