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 ;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: guest 一定要写。
3.修改启动配置文件,使用standalone-full.xml启动jboss服务器
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:
客户端项目用eclipse集成jboss的 j2ee项目。runtime是jboss 7.
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: guest 一定要写。
3.修改启动配置文件,使用standalone-full.xml启动jboss服务器
- $JBOSS_HOME$in>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>
客户端项目用eclipse集成jboss的 j2ee项目。runtime是jboss 7.
另外一定别忘了加入 external lib :jboss-client-7.1.0.Final.jar (JBOSS_HOME/bin/client)
否则会报错:
javax.naming.NamingException: JBAS011843: Failed instantiate InitialContextFactory
User: acs doesn't have permission='SEND' on address jms.queue.testQueue 权限错误,需要看看:
“jboss-homestabdaloneconfigurationapplication-roles.properties”
加一句 testjms=guest
其他错误参见:
http://www.techartifact.com/blogs/2012/10/jboss-as-7-setting-up-hornetq-jms.html#sthash.OLzvKFO6.dpbs
在测试中遇到收不到消息。可以在控制台查看对应的queue有多少个comsumer。我的代码由于开始没有写consumer.close(). 导致接收完后虽然函数结束没有再调用receve阻塞方法了,但consumer一直存在。从jboss7的管理页面可以看到有好几个consumer。导致再次发送的消息还会被它吃掉。整了一天不断测试才搞明白。
public Object Receive(String filter, long timeoutReceive) throws JMSException { System.out.println ("======enter Receive===" ); System.out.println("Creating cosumer with filter: " + filter ); MessageConsumer consumer = queuesession.createConsumer(queue, filter); Message mrcv = null; System.out.println("receive message with timeout="+timeoutReceive); mrcv = consumer.receive(timeoutReceive); if (mrcv != null) { try { System.out.println("RCV1: " + mrcv.getJMSCorrelationID()); System.out.println("====== consumer.close();.====="); consumer.close(); return ((ObjectMessage) mrcv).getObject();; } catch (MessageFormatException e) { System.out.println("MessageFormatException: " + e.getMessage()); mrcv.acknowledge(); } } else { System.out.println("======receive message time out.====="); } consumer.close(); return null; }
P2P demo
- 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();
- }
- }
- }
- }
- 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();
- }
- }
- }
- }
Pub/Sub demo
- 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);
- }
- }
- 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);
- }
- }