消息队列系列之ActiveMQ(JMS、集群配置)

来源:互联网 发布:网络公关公司排行 编辑:程序博客网 时间:2024/06/05 06:05

1、ActiveMQ的下载与启动

到http://activemq.apache.org/activemq-5152-release.html下载ActiveMQ

windows版本的启动:

运行bin文件夹中的win32(32位系统)/win64(64位系统)下的:

activemq.bat(直接启动,不能关闭命令行窗口,否则会关闭)

InstallService.bat(以服务方式启动,可以在windows的服务中找到并设置开机自启动)

启动成功后,在浏览器中访问localhost:8161可以进入如下界面,点击进入管理界面,输入默认用户名admin密码admin进入



今后常用的Queue(消息队列)和Topics(话题)将在此处查看。


linux版本的启动

进入安装目录的bin目录下,使用./activemq start 启动,启动成功后可以远程访问activemq管理页面。例如,此linux机器的IP为192.169.1.102,则访问http://192.168.1.102:8161即可





2、消息中间件的相关概念

ActiveMQ两种基本模式

消息队列模式中,消息生产者生产的消息存在消息队列中,消息消费者从消息队列中消费消息,一条消息被一个消费者消费后,其余消费者将消费不到该消息;

发布订阅模式中,消息生产者生产的消息存在话题中,消息消费者从话题中订阅消息,一条消息可以被多个消费者消费。


使用消息中间件的好处:通过消息中间件解耦服务调用


3、JMS规范




4、普通Java程序使用JMS集成ActiveMQ

记得添加jar包:


如果使用maven记得在pom.xml中添加相应依赖:

 <dependency>            <groupId>org.apache.activemq</groupId>            <artifactId>activemq-core</artifactId>            <version>5.15.2</version>   </dependency>

4.1 消息队列模式

生产者

package cn.edu.shu.ces.chenjie.jms.queue;import org.apache.activemq.ActiveMQConnectionFactory;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import javax.jms.*;public class AppProducer {    private static final String url = "tcp://192.168.1.102:61616";    private static final String queueName = "queue-test";    private static Logger Log = LoggerFactory.getLogger(AppProducer.class);    public static void main(String[] args) throws JMSException {        //1、创建ConnectionFactory        ConnectionFactory connectionFactory = new ActiveMQConnectionFactory(url);        //2、创建Connection        Connection connection = connectionFactory.createConnection();        //3、启动连接        connection.start();        //4、创建会话        //b:使用事物    应答模式        Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);        //5、创建一个目标        Destination destination = session.createQueue(queueName);       //6、创建一个生产者        MessageProducer producer = session.createProducer(destination);        for(int i = 0; i < 100; i++){            //7、创建消息            TextMessage textMessage = session.createTextMessage("test :" + i);            //8、发送消息            producer.send(textMessage);            Log.info("发送消息" + textMessage + "");        }        //9、关闭连接        connection.close();    }}

消费者

package cn.edu.shu.ces.chenjie.jms.queue;import org.apache.activemq.ActiveMQConnectionFactory;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import javax.jms.*;public class AppConsumer {    private static final String url = "tcp://192.168.1.102:61616";    private static final String queueName = "queue-test";    private static Logger Log = LoggerFactory.getLogger(AppProducer.class);    public static void main(String[] args) throws JMSException {        //1、创建ConnectionFactory        ConnectionFactory connectionFactory = new ActiveMQConnectionFactory(url);        //2、创建Connection        Connection connection = connectionFactory.createConnection();        //3、启动连接        connection.start();        //4、创建会话        //b:使用事物    应答模式        Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);        //5、创建一个目标        Destination destination = session.createQueue(queueName);        //6、创建一个生产者        MessageConsumer consumer = session.createConsumer(destination);        //7、创建一个监听器        consumer.setMessageListener(new MessageListener() {            public void onMessage(Message message) {                TextMessage textMessage = (TextMessage) message;                Log.info("接收到消息:" + textMessage);            }        });        //8、关闭连接        //connection.close();    }}

启动生产者



启动消费者



4.2 话题-订阅模式

生产者

package cn.edu.shu.ces.chenjie.jms.topic;import org.apache.activemq.ActiveMQConnectionFactory;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import javax.jms.*;public class AppProducer {    private static final String url = "tcp://192.168.1.102:61616";    private static final String topicName = "topic-test";    private static Logger Log = LoggerFactory.getLogger(AppProducer.class);    public static void main(String[] args) throws JMSException {        //1、创建ConnectionFactory        ConnectionFactory connectionFactory = new ActiveMQConnectionFactory(url);        //2、创建Connection        Connection connection = connectionFactory.createConnection();        //3、启动连接        connection.start();        //4、创建会话        //b:使用事物    应答模式        Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);        //5、创建一个目标        Destination destination = session.createTopic(topicName);       //6、创建一个生产者        MessageProducer producer = session.createProducer(destination);        for(int i = 0; i < 100; i++){            //7、创建消息            TextMessage textMessage = session.createTextMessage("test :" + i);            //8、发送消息            producer.send(textMessage);            Log.info("发送消息" + textMessage + "");        }        //9、关闭连接        connection.close();    }}

消费者

package cn.edu.shu.ces.chenjie.jms.topic;import org.apache.activemq.ActiveMQConnectionFactory;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import javax.jms.*;public class AppConsumer {    private static final String url = "tcp://192.168.1.102:61616";    private static final String topicName = "topic-test";    private static Logger Log = LoggerFactory.getLogger(AppProducer.class);    public static void main(String[] args) throws JMSException {        //1、创建ConnectionFactory        ConnectionFactory connectionFactory = new ActiveMQConnectionFactory(url);        //2、创建Connection        Connection connection = connectionFactory.createConnection();        //3、启动连接        connection.start();        //4、创建会话        //b:使用事物    应答模式        Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);        //5、创建一个目标        Destination destination = session.createTopic(topicName);        //6、创建一个生产者        MessageConsumer consumer = session.createConsumer(destination);        //7、创建一个监听器        consumer.setMessageListener(new MessageListener() {            public void onMessage(Message message) {                TextMessage textMessage = (TextMessage) message;                Log.info("接收到消息:" + textMessage);            }        });        //8、关闭连接        //connection.close();    }}

【先】启动消费者订阅话题,【再】启动生产者产生消息



5、JavaEE(SpringJMS)中集成ActiveMQ

依赖:

<?xml version="1.0" encoding="UTF-8"?><project xmlns="http://maven.apache.org/POM/4.0.0"         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">    <modelVersion>4.0.0</modelVersion>    <groupId>cn.edu.shu.ces.chenjie</groupId>    <artifactId>ActiveMQ-Test</artifactId>    <version>1.0-SNAPSHOT</version>    <properties>        <spring.version>4.2.5.RELEASE</spring.version>    </properties>    <dependencies>        <!-- https://mvnrepository.com/artifact/org.apache.activemq/activemq-all -->        <dependency>            <groupId>org.apache.activemq</groupId>            <artifactId>activemq-core</artifactId>            <version>5.15.2</version>            <exclusions>                <exclusion>                    <artifactId>spring-context</artifactId>                    <groupId>org.springframework</groupId>                </exclusion>            </exclusions>        </dependency>        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-context</artifactId>            <version>${spring.version}</version>        </dependency>        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-jms</artifactId>            <version>${spring.version}</version>        </dependency>    </dependencies></project>

项目结构:


在resources中添加三个配置文件:

common.xml

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">    <!-- ActiveMQ 提供的ConnectionFactory-->    <bean id="targetConnectionFactory" class="org.apache.activemq.ActiveMQConnectionFactory">        <property name="brokerURL" value="tcp://192.168.1.102:61616" />        <!--最新版的ActiveMQ想要传递对象消息,需要指定可以序列话的类所在的包-->        <property name="trustedPackages">            <list>                <value>java.lang</value>                <value>javax.security</value>                <value>java.util</value>                <value>org.apache.activemq</value>                <value>cn.edu.shu.ces.chenjie</value>            </list>        </property>    </bean>    <!--Spring JMS 提供的ConnectionFactory-->    <bean id="connectionFactory" class="org.springframework.jms.connection.SingleConnectionFactory">        <property name="targetConnectionFactory" ref="targetConnectionFactory">        </property>    </bean>    <!--一个队列目的地,点对点的-->    <bean id="queueDestination" class="org.apache.activemq.command.ActiveMQQueue">        <constructor-arg value="spring-queue"/>    </bean>    <!--一个主题目的地,发布订阅模式-->    <bean id="topicDestination" class="org.apache.activemq.command.ActiveMQTopic">        <constructor-arg value="spring-topic"/>    </bean></beans>

producer.xml

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"       xmlns:context="http://www.springframework.org/schema/context"       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">    <context:annotation-config/>    <import resource="common.xml"/>    <bean id="jmsTemplate" class="org.springframework.jms.core.JmsTemplate">        <property name="connectionFactory" ref="connectionFactory"/>    </bean>    <bean id="producerService" class="cn.edu.shu.ces.chenjie.jms.spring.ProducerServiceImpl"/></beans>

consumer.xml

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">    <!--导入公共配置-->    <import resource="common.xml"/>    <!--配置消息监听器-->    <bean id="consumerMessageListener" class="cn.edu.shu.ces.chenjie.jms.spring.ConsumerMessageListener"/>    <!--配置消息容器-->    <bean id="jmsContainer" class="org.springframework.jms.listener.DefaultMessageListenerContainer">        <property name="connectionFactory" ref="connectionFactory"/>        <!--<property name="destination" ref="queueDestination"/>-->        <property name="destination" ref="topicDestination"/>        <property name="messageListener" ref="consumerMessageListener"/>    </bean></beans>

ProducerService

package cn.edu.shu.ces.chenjie.jms.spring;public interface ProducerService {    void sendMessage(String message);    void sendLoginMessage(User user);}


ProducerServiceImpl
package cn.edu.shu.ces.chenjie.jms.spring;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.jms.core.JmsTemplate;import org.springframework.jms.core.MessageCreator;import javax.annotation.Resource;import javax.jms.*;public class ProducerServiceImpl implements ProducerService{    @Autowired    JmsTemplate jmsTemplate;    @Resource(name="topicDestination")//queueDestination    Destination destination;    public void sendMessage(final String message) {        jmsTemplate.send(destination, new MessageCreator() {            public Message createMessage(Session session) throws JMSException {                TextMessage textMessage = session.createTextMessage(message);                return textMessage;            }        });        System.out.println("发送消息:" + message);    }    public void sendLoginMessage(final User user) {        jmsTemplate.send(destination, new MessageCreator() {            public Message createMessage(Session session) throws JMSException {                Message loginMessage = session.createObjectMessage(user);                return loginMessage;            }        });        System.out.println("发送用户登录消息:" + user);    }}

ConsumerMessageListener

package cn.edu.shu.ces.chenjie.jms.spring;import javax.jms.JMSException;import javax.jms.Message;import javax.jms.MessageListener;import javax.jms.ObjectMessage;public class ConsumerMessageListener implements MessageListener{    public void onMessage(Message message) {        System.out.println("received:" + message);        if(message instanceof ObjectMessage){            try {                User user = (User) ((ObjectMessage) message).getObject();                System.out.println("received:" + user);            } catch (JMSException e) {                e.printStackTrace();            }        }    }}
User

package cn.edu.shu.ces.chenjie.jms.spring;import java.io.Serializable;public class User implements Serializable {    private String username;    private String password;    public String getUsername() {        return username;    }    public void setUsername(String username) {        this.username = username;    }    public String getPassword() {        return password;    }    public void setPassword(String password) {        this.password = password;    }    @Override    public String toString() {        return "User{" +                "username='" + username + '\'' +                ", password='" + password + '\'' +                '}';    }}

AppProducer
package cn.edu.shu.ces.chenjie.jms.spring;import org.apache.xbean.spring.context.ClassPathXmlApplicationContext;public class AppProducer {    public static void main(String[] args) {        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("producer.xml");        ProducerService service = context.getBean(ProducerService.class);        for(int i = 0; i < 100; i ++){            service.sendMessage("test " + i);        }        User user = new User();        user.setUsername("chenjie");        user.setPassword("chenjie123");        service.sendLoginMessage(user);        context.close();    }}


AppConsumer
package cn.edu.shu.ces.chenjie.jms.spring;import org.apache.xbean.spring.context.ClassPathXmlApplicationContext;public class AppConsumer {    public static void main(String[] args) {        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("consumer.xml");    }}

启动生产者、消费者




JMS规范规定的和ActiveMQ支持的消息类型有很多,例子中使用到了文本消息和对象消息。

两种消息模式需要更改相应的配置文件(配置文件中的注释)


6、ActiveMQ集群的搭建与测试

集群结构:



NodeA不存储消息,NodeB和NodeC互斥共享消息存储,当一方占有消息存储时成为master,另一方成为slave。成为master的一方跟A同步消息,做到了负载均衡。当B/C中的master宕机时,释放消息存储,此时的slave得到消息存储成为master,做到了安全。

配置安排:

由于是示例,因此在用一台机器上的不同端口部署3个结点充当3台机器,并使用本地磁盘文件夹充当共享文件夹。

实际应该是3台机器,使用分布式文件系统当共享文件夹。



将activemq的文件夹拷贝3份,

分别取名为a b c,同时新建一个share文件夹用于消息存储共享文件夹



依次编辑各个文件夹中conf下的actvmq.xml 和jetty.xml



chenjie@pc2:~/activemq/activemq-a/conf$ vim activemq.xml

注释掉了transportConnectors标签下的后面几个配置,新增了一个networkConnectors配置,使A连接到B和C

 
 <transportConnector name="openwire" uri="tcp://0.0.0.0:61616?maximumConnections=1000&wireFormat.maxFrameSize=104857600"/><!--            <transportConnector name="amqp" uri="amqp://0.0.0.0:5672?maximumConnections=1000&wireFormat.maxFrameSize=104857600"/>            <transportConnector name="stomp" uri="stomp://0.0.0.0:61613?maximumConnections=1000&wireFormat.maxFrameSize=104857600"/>            <transportConnector name="mqtt" uri="mqtt://0.0.0.0:1883?maximumConnections=1000&wireFormat.maxFrameSize=104857600"/>            <transportConnector name="ws" uri="ws://0.0.0.0:61614?maximumConnections=1000&wireFormat.maxFrameSize=104857600"/>-->    </transportConnectors><networkConnectors>        <networkConnector name="local_network" uri="static:(tcp://127.0.0.1:61617,tcp://127.0.0.1:61618)" /></networkConnectors>



chenjie@pc2:~/activemq/activemq-b/conf$ vim activemq.xml

修改持久化目录

<persistenceAdapter>            <kahaDB directory="/home/chenjie/activemq/share"/>        </persistenceAdapter>

 <transportConnector name="openwire" uri="tcp://0.0.0.0:61617?maximumConnections=1000&wireFormat.maxFrameSize=104857600"/>       <!--     <transportConnector name="amqp" uri="amqp://0.0.0.0:5672?maximumConnections=1000&wireFormat.maxFrameSize=104857600"/>            <transportConnector name="stomp" uri="stomp://0.0.0.0:61613?maximumConnections=1000&wireFormat.maxFrameSize=104857600"/>            <transportConnector name="mqtt" uri="mqtt://0.0.0.0:1883?maximumConnections=1000&wireFormat.maxFrameSize=104857600"/>            <transportConnector name="ws" uri="ws://0.0.0.0:61614?maximumConnections=1000&wireFormat.maxFrameSize=104857600"/>       -->         </transportConnectors>        <networkConnectors>                <networkConnector name="network_a" uri="static:(tcp://127.0.0.1:61616)" />        </networkConnectors>



注释掉transportConnector 的后面几个配置,并增加一个networkConnectors,建立跟a的静态连接

c的activemq.xml配置与b一样

chenjie@pc2:~/activemq/activemq-a/conf$ vim jetty.xml,在此修改端口号,将a b c的端口修改为8061 8062 8062

 <bean id="jettyPort" class="org.apache.activemq.web.WebConsolePort" init-method="start">             <!-- the default port number for the web console -->        <property name="host" value="0.0.0.0"/>        <property name="port" value="8161"/>    </bean>


依次启动a b c

依次访问:http://192.168.1.102:8161/admin http://192.168.1.102:8162/admin http://192.168.1.102:8163/admin





可以看到6183对应的c无法访问,这是因为6182对应的b抢占了共享消息存储,所以c没有提供服务。

将b杀掉:



再次访问c对应的http://192.168.1.102:8163/admin


因为b已经杀掉了所以b对应的8062显然不能显示了。这也证实了b和c能够起到保障可用性的作用。


使用集群模式时代码中需修改的地方:

生产者:

private static final String url = "failover:(tcp://192.168.1.102:61617,tcp://192.168.1.102:61618)?randomize=true";

消费者:

private static final String url = "failover:(tcp://192.168.1.61616,tcp://192.168.1.102:61617,tcp://192.168.1.102:61618)?randomize=true";

原创粉丝点击