java之消息隊列ActiveMQ實踐
阿新 • • 發佈:2019-02-26
web .tar.gz 消息隊列 world 默認端口 一個 bre -a 文本消息
原創論文:https://www.cnblogs.com/goujh/p/8510239.html
1、在安裝ActiveMQ
http://activemq.apache.org/activemq-5158-release.html
2、解壓啟動服務
tar -zxvf apache-activemq-5.15.8-bin.tar.gz 進入目錄,運行./bin/activemq start
3、網頁查看
網址:http://139.199.64.189:8161/
點擊:Manage ActiveMQ broker
輸入默認用戶和密碼都為:admin
4、創建maven工程,在pom.xml文件中添加
<!-- https://mvnrepository.com/artifact/org.apache.activemq/activemq-core --> <dependency> <groupId>org.apache.activemq</groupId> <artifactId>activemq-core</artifactId> <version>5.7.0</version> </dependency>
5、創建JMSConsumer.java文件,這是一個消費者
package com.activemq.demo.method1; import javax.jms.Connection; import javax.jms.ConnectionFactory; import javax.jms.Destination; import javax.jms.MessageConsumer; import javax.jms.Session; import javax.jms.TextMessage; import org.apache.activemq.ActiveMQConnectionFactory;public class JMSConsumer { //默認連接用戶名 private static final String USERNAME = "admin";//ActiveMQConnection.DEFAULT_USER; //默認連接密碼 private static final String PASSWORD = "admin";//ActiveMQConnection.DEFAULT_PASSWORD; //默認連接地址,默認端口為61616 private static final String BROKERURL = "tcp://ip:61616";//ActiveMQConnection.DEFAULT_BROKER_URL; public static void main(String[] args) { //連接工廠 ConnectionFactory connectionFactory; //連接 Connection connection = null; //會話,接收或者發送消息的線程 Session session; //消息目的地 Destination destination; //消息的消費者 MessageConsumer messageConsumer; //實例化連接工廠 connectionFactory = new ActiveMQConnectionFactory(JMSConsumer.USERNAME, JMSConsumer.PASSWORD, JMSConsumer.BROKERURL); try { //通過工廠獲取連接 connection = connectionFactory.createConnection(); //啟動連接 connection.start(); //創建會話 session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE); //創建一個連接Hello World!的消息隊列 destination = session.createQueue("Hello World"); //創建消息的消費者 messageConsumer = session.createConsumer(destination); while(true){ TextMessage textMessage = (TextMessage) messageConsumer.receive(100000); if (textMessage != null) { System.err.println("收到的消息:" + textMessage.getText()); } else { break; } } } catch (Exception e) { e.printStackTrace(); } } }
6、創建JMSProducer.java,這是一個生產者
package com.activemq.demo.method1; import javax.jms.Connection; import javax.jms.ConnectionFactory; import javax.jms.Destination; import javax.jms.JMSException; import javax.jms.MessageProducer; import javax.jms.Session; import javax.jms.TextMessage; import org.apache.activemq.ActiveMQConnectionFactory; public class JMSProducer { //默認連接用戶名 private static final String USERNAME = "admin";//ActiveMQConnection.DEFAULT_USER; //默認連接密碼 private static final String PASSWORD = "admin";//ActiveMQConnection.DEFAULT_PASSWORD; //默認連接地址,默認端口為61616 private static final String BROKERURL = "tcp://ip:61616";//ActiveMQConnection.DEFAULT_BROKER_URL; //發送的消息數量 private static final int SENDNUM = 10; public static void main(String[] args) { //連接工廠 ConnectionFactory connectionFactory; //連接 Connection connection = null; //會話,接收或者發送消息的線程 Session session; //消息的目的地 Destination destination; //消息生產者 MessageProducer messageProducer; //實例化連接工廠 connectionFactory = new ActiveMQConnectionFactory(JMSProducer.USERNAME, JMSProducer.PASSWORD, JMSProducer.BROKERURL); try { //通過連接工廠獲取連接 connection = connectionFactory.createConnection(); //啟動連接 connection.start(); //創建session session = connection.createSession(true, Session.AUTO_ACKNOWLEDGE); //創建一個名稱為Hello World!的消息隊列 destination = session.createQueue("Hello World"); //創建消息生產者 messageProducer = session.createProducer(destination); //發送消息 sendMessage(session,messageProducer); session.commit(); } catch (Exception e) { e.printStackTrace(); } finally{ if(connection != null){ try { connection.close(); } catch (JMSException e) { e.printStackTrace(); } } } } /** * 發送消息 * @param session * @param messageProducer 消息生產者 * @throws Exception */ public static void sendMessage(Session session,MessageProducer messageProducer) throws Exception{ for (int i = 0; i < JMSProducer.SENDNUM; i++) { //創建一條文本消息 TextMessage message = session.createTextMessage("activemq 發送消息:" + i); System.err.println("發送消息:activemq 發送消息:" + i); //通過消息生產者發出消息 messageProducer.send(message); } } }
7、運行兩個實例,可在web端查看
java之消息隊列ActiveMQ實踐