ActiveMQ搭建
下载
到ActiveMQ官网,找到下载点。
目前,
官网为http://activemq.apache.org/
Linux版本下载点之一为:http://apache.fayea.com/activemq/5.11.1/apache-activemq-5.11.1-bin.tar.gz
启动
下载到本机,并解压
wget http://apache.fayea.com/activemq/5.11.1/apache-activemq-5.11.1-bin.tar.gz
tar -xf ./apache-activemq-5.11.1-bin.tar.gz
wget http://apache.fayea.com/activemq/5.11.1/apache-activemq-5.11.1-bin.tar.gz
tar -xf ./apache-activemq-5.11.1-bin.tar.gz
启动(当然,由于依赖于JAVA,如果你没有安装JAVA,它会提醒你的,哈哈)
cd ./apache-activemq-5.11.1-bin/bin
./activemq start
cd ./apache-activemq-5.11.1-bin/bin
./activemq start
测试启动成功与否
ActiveMQ默认监听61616端口,查此端口看看是否成功启动
netstat -an|grep 61616
netstat -an|grep 61616
如果一切顺利,会看到如下日志
[nicchagil@localhost bin]$ ./activemq start
INFO: Loading '/home/nicchagil/app/apache-activemq-5.11.1/bin/env'
INFO: Using java '/home/nicchagil/app/jdk1.7.0_71//bin/java'
INFO: Starting - inspect logfiles specified in logging.properties and log4j.prop erties to get details
INFO: pidfile created : '/home/nicchagil/app/apache-activemq-5.11.1/data/activem q.pid' (pid '4858')
[nicchagil@localhost bin]$
[nicchagil@localhost bin]$
[nicchagil@localhost bin]$
[nicchagil@localhost bin]$ netstat -an | grep 61616
tcp 0 0 :::61616 :::* LIST EN
[nicchagil@localhost bin]$

[nicchagil@localhost bin]$ ./activemq start
INFO: Loading '/home/nicchagil/app/apache-activemq-5.11.1/bin/env'
INFO: Using java '/home/nicchagil/app/jdk1.7.0_71//bin/java'
INFO: Starting - inspect logfiles specified in logging.properties and log4j.prop erties to get details
INFO: pidfile created : '/home/nicchagil/app/apache-activemq-5.11.1/data/activem q.pid' (pid '4858')
[nicchagil@localhost bin]$
[nicchagil@localhost bin]$
[nicchagil@localhost bin]$
[nicchagil@localhost bin]$ netstat -an | grep 61616
tcp 0 0 :::61616 :::* LIST EN
[nicchagil@localhost bin]$

顺便,登录下管理员页面,看看有木有问题:
URL : http://10.0.0.109:8161/admin/
ACC/PWD : admin/admin
尝试基本消息功能
接下来,用简单的点对点测试消息发送、消息接收。
引入包:
- activemq-client-5.11.1.jar
- geronimo-j2ee-management_1.1_spec-1.0.1.jar
- geronimo-jms_1.1_spec-1.1.1.jar
- hawtbuf-1.11.jar
- slf4j-api-1.7.10.jar
消息发送
package com.nicchagil.activemq.study.No001点对点; import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.DeliveryMode;
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.MessageProducer;
import javax.jms.ObjectMessage;
import javax.jms.Session; import org.apache.activemq.ActiveMQConnection;
import org.apache.activemq.ActiveMQConnectionFactory; public class Sender { public static void main(String[] args) throws JMSException {
ConnectionFactory factory = new ActiveMQConnectionFactory(ActiveMQConnection.DEFAULT_USER, ActiveMQConnection.DEFAULT_PASSWORD, "tcp://10.0.0.109:61616");
Connection connection = factory.createConnection();
connection.start();
Session session = connection.createSession(Boolean.TRUE, Session.AUTO_ACKNOWLEDGE);
Destination destination = session.createQueue("TestQueue");
MessageProducer producer = session.createProducer(destination);
producer.setDeliveryMode(DeliveryMode.NON_PERSISTENT);
ObjectMessage message = session.createObjectMessage("hello world...");
producer.send(message);
session.commit();
System.out.println("sent...");
} }

package com.nicchagil.activemq.study.No001点对点; import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.DeliveryMode;
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.MessageProducer;
import javax.jms.ObjectMessage;
import javax.jms.Session; import org.apache.activemq.ActiveMQConnection;
import org.apache.activemq.ActiveMQConnectionFactory; public class Sender { public static void main(String[] args) throws JMSException {
ConnectionFactory factory = new ActiveMQConnectionFactory(ActiveMQConnection.DEFAULT_USER, ActiveMQConnection.DEFAULT_PASSWORD, "tcp://10.0.0.109:61616");
Connection connection = factory.createConnection();
connection.start();
Session session = connection.createSession(Boolean.TRUE, Session.AUTO_ACKNOWLEDGE);
Destination destination = session.createQueue("TestQueue");
MessageProducer producer = session.createProducer(destination);
producer.setDeliveryMode(DeliveryMode.NON_PERSISTENT);
ObjectMessage message = session.createObjectMessage("hello world...");
producer.send(message);
session.commit();
System.out.println("sent...");
} }

消息接收
package com.nicchagil.activemq.study.No001点对点; import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.MessageConsumer;
import javax.jms.ObjectMessage;
import javax.jms.Session; import org.apache.activemq.ActiveMQConnection;
import org.apache.activemq.ActiveMQConnectionFactory; public class Receiver { public static void main(String[] args) throws JMSException {
ConnectionFactory factory = new ActiveMQConnectionFactory(ActiveMQConnection.DEFAULT_USER, ActiveMQConnection.DEFAULT_PASSWORD,
"tcp://10.0.0.109:61616");
Connection connection = factory.createConnection();
connection.start();
Session session = connection.createSession(Boolean.TRUE, Session.AUTO_ACKNOWLEDGE);
Destination destination = session.createQueue("TestQueue"); MessageConsumer consumer = session.createConsumer(destination);
ObjectMessage message = (ObjectMessage)consumer.receive();
if (message != null) {
String messageString = (String)message.getObject();
System.out.println("Receive : " + messageString);
}
} }

package com.nicchagil.activemq.study.No001点对点; import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.MessageConsumer;
import javax.jms.ObjectMessage;
import javax.jms.Session; import org.apache.activemq.ActiveMQConnection;
import org.apache.activemq.ActiveMQConnectionFactory; public class Receiver { public static void main(String[] args) throws JMSException {
ConnectionFactory factory = new ActiveMQConnectionFactory(ActiveMQConnection.DEFAULT_USER, ActiveMQConnection.DEFAULT_PASSWORD,
"tcp://10.0.0.109:61616");
Connection connection = factory.createConnection();
connection.start();
Session session = connection.createSession(Boolean.TRUE, Session.AUTO_ACKNOWLEDGE);
Destination destination = session.createQueue("TestQueue"); MessageConsumer consumer = session.createConsumer(destination);
ObjectMessage message = (ObjectMessage)consumer.receive();
if (message != null) {
String messageString = (String)message.getObject();
System.out.println("Receive : " + messageString);
}
} }

看到console打印出:Receive : hello world...,可知接收到消息了,内流满面啊啊啊啊。。。
关闭
查询进程id(pid),禁止其进程:
ps -ef | grep activemq
kill -9 pid
ps -ef | grep activemq
kill -9 pid
再运行Sender,她就无法连接了,哈哈哈哈哈
Exception in thread "main" javax.jms.JMSException: Could not connect to broker URL: tcp://10.0.0.109:61616. Reason: java.net.ConnectException: Connection refused: connect
Exception in thread "main" javax.jms.JMSException: Could not connect to broker URL: tcp://10.0.0.109:61616. Reason: java.net.ConnectException: Connection refused: connect
好了,基本的搭建告一段落。
荆棘
过程中,遇到一个小问题,就是我一开始是用JDK1.6去跑的,报出常见的Unsupported major.minor version 51.0
针对这个问题,这个帖子有很好的参考意义:
http://www.cnblogs.com/chinafine/articles/1935748.html
找出jar中的一个class,执行以下命令,可查出minor version、major version:
javap -verbose yourClassName
javap -verbose yourClassName
或直接查看jar中的META-INF\MANIFEST.MF。
然后对照帖子中的JDK版本,换成JDK1.7就OK了。
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