activeMQ 学习笔记

pom.xml：

<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>4.0.0modelVersion>

    <groupId>com.bry.jmsgroupId>
    <artifactId>jms_testartifactId>
    <version>0.0.1-SNAPSHOTversion>
    <packaging>jarpackaging>

    <name>jms_testname>
    <url>http://maven.apache.orgurl>

    <properties>
        <project.build.sourceEncoding>UTF-8project.build.sourceEncoding>
    properties>

    <dependencies>
        <dependency>
            <groupId>org.apache.activemqgroupId>
            <artifactId>activemq-allartifactId>
            <version>5.9.0version>
        dependency>
        <dependency>
            <groupId>junitgroupId>
            <artifactId>junitartifactId>
            <version>3.8.1version>
            <scope>testscope>
        dependency>
    dependencies>
project>

1:队列模式: 如果有多个消费者，生产者发送的消息会被队列式接收，比如生产者发送4个消息，一共两个消费者，那就是第一个消费者接收一个，第二个消费者接收一个，第一个消费者再接收一个，第二个消费者再接收一个，
生产者代码:

public class AppProducer {
    private static final String url = "tcp://192.168.0.113:61616";
    private static final String queueName = "queue_test";

    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 第一个参数是是否启动事物处理，第二个参数设置了自动应答
        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.发布消息
            producer.send(textMessage);
            System.out.println("发送消息" + textMessage.getText());
        }

        //9.关闭连接
        connection.close();
    }
}

消费者:

public class AppConsumer {
    private static final String url = "tcp://192.168.0.113:61616";
    private static final String queueName = "queue_test";

    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 第一个参数是是否启动事物处理，第二个参数设置了自动应答
        Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        // 5.创建一个目标
        Destination destination = session.createQueue(queueName);
        // 6.创建一个消费者
        MessageConsumer consumer = session.createConsumer(destination);
        // 7.创建一个监听器
        consumer.setMessageListener(new MessageListener() {
            public void onMessage(Message message) {
                TextMessage textMessage = (javax.jms.TextMessage) message;
                try {
                    System.out.println("接收消息" + textMessage.getText());
                } catch (JMSException e) {
                    e.printStackTrace();
                }
            }
        });

        // 8.关闭连接
        //connection.close();
    }
}

1:主题模式: 生产者发送消息，每个消费者会接收到全部消息，前提是消费者要在生产者没有发送消息之前就监听这个主题.
生产者代码:

public class AppProducer {
    private static final String url = "tcp://192.168.0.113:61616";
    private static final String topicName = "topic_test";

    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 第一个参数是是否启动事物处理，第二个参数设置了自动应答
        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.发布消息
            producer.send(textMessage);
            System.out.println("发送消息" + textMessage.getText());
        }

        //9.关闭连接
        connection.close();
    }
}

消费者:

public class AppConsumer {
    private static final String url = "tcp://192.168.0.113:61616";
    private static final String topicName = "topic_test";

    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 第一个参数是是否启动事物处理，第二个参数设置了自动应答
        Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        // 5.创建一个目标
        Destination destination = session.createTopic(topicName);
        // 6.创建一个消费者
        MessageConsumer consumer = session.createConsumer(destination);
        // 7.创建一个监听器
        consumer.setMessageListener(new MessageListener() {
            public void onMessage(Message message) {
                TextMessage textMessage = (javax.jms.TextMessage) message;
                try {
                    System.out.println("接收消息" + textMessage.getText());
                } catch (JMSException e) {
                    e.printStackTrace();
                }
            }
        });

        // 8.关闭连接
        //connection.close();
    }
}