标签:它的 inter stat trace com pre java ati 说明文档
mq(message queue),即消息队列,目前比较流行消息队列是active mq 和kafka。本文介绍如何简单的使用active mq。
ActiveMQ官网下载地址:http://activemq.apache.org/download.html
ActiveMQ 提供了Windows 和Linux、Unix 等几个版本,可简单使用windows版本。下载解压启动即可,进入apache-activemq-5.15.8\bin\win64目录,双击activemq.bat即可启动。
从它的目录来说,还是很简单的:
ActiveMQ默认启动时,启动了内置的jetty服务器,提供一个用于监控ActiveMQ的admin应用。
admin:http://127.0.0.1:8161/admin/
我们在浏览器打开链接之后输入账号密码(这里和tomcat 服务器类似)
默认账号:admin
密码:admin
到这里为止,ActiveMQ 服务端就启动完毕了。
接下来是代码:
pom.xml添加如下:
<!-- https://mvnrepository.com/artifact/org.apache.activemq/activemq-all --> <dependency> <groupId>org.apache.activemq</groupId> <artifactId>activemq-all</artifactId> <version>5.15.8</version> </dependency>
创建4个类,分别是两个工具类和两个测试类;
消息队列分为生成者(producter)和消费者(consumer)
1、创建生产者工具类
package com.wzl.demo.utils; import java.util.concurrent.atomic.AtomicInteger; import javax.jms.Connection; import javax.jms.ConnectionFactory; import javax.jms.JMSException; import javax.jms.MessageProducer; import javax.jms.Queue; import javax.jms.Session; import javax.jms.TextMessage; import org.apache.activemq.ActiveMQConnection; import org.apache.activemq.ActiveMQConnectionFactory; public class ActiveMQProducter { //ActiveMq 的默认用户名 private static final String USERNAME = ActiveMQConnection.DEFAULT_USER; //ActiveMq 的默认登录密码 private static final String PASSWORD = ActiveMQConnection.DEFAULT_PASSWORD; //ActiveMQ 的链接地址 private static final String BROKEN_URL = ActiveMQConnection.DEFAULT_BROKER_URL; AtomicInteger count = new AtomicInteger(0); //链接工厂 ConnectionFactory connectionFactory; //链接对象 Connection connection; //事务管理 Session session; ThreadLocal<MessageProducer> threadLocal = new ThreadLocal<>(); public void init(){ try { //创建一个链接工厂 connectionFactory = new ActiveMQConnectionFactory(USERNAME,PASSWORD,BROKEN_URL); //从工厂中创建一个链接 connection = connectionFactory.createConnection(); //开启链接 connection.start(); //创建一个事务(这里通过参数可以设置事务的级别) session = connection.createSession(true,Session.SESSION_TRANSACTED); } catch (JMSException e) { e.printStackTrace(); } } public void sendMessage(String disname){ try { //创建一个消息队列 Queue queue = session.createQueue(disname); //消息生产者 MessageProducer messageProducer = null; if(threadLocal.get()!=null){ messageProducer = threadLocal.get(); }else{ messageProducer = session.createProducer(queue); threadLocal.set(messageProducer); } while(true){ Thread.sleep(1000); int num = count.getAndIncrement(); //创建一条消息 TextMessage msg = session.createTextMessage(Thread.currentThread().getName()+ "producter:生产了一条消息!,count:"+num); System.out.println(Thread.currentThread().getName()+ "producter:生产了一条消息!,count:"+num); //发送消息 messageProducer.send(msg); //提交事务 session.commit(); } } catch (JMSException e) { e.printStackTrace(); } catch (InterruptedException e) { e.printStackTrace(); } } }
2、创建消费者工具类
package com.wzl.demo.utils; import java.util.concurrent.atomic.AtomicInteger; import javax.jms.Connection; import javax.jms.ConnectionFactory; import javax.jms.JMSException; import javax.jms.MessageConsumer; import javax.jms.Queue; import javax.jms.Session; import javax.jms.TextMessage; import org.apache.activemq.ActiveMQConnection; import org.apache.activemq.ActiveMQConnectionFactory; public class ActiveMQConsumer { private static final String USERNAME = ActiveMQConnection.DEFAULT_USER; private static final String PASSWORD = ActiveMQConnection.DEFAULT_PASSWORD; private static final String BROKEN_URL = ActiveMQConnection.DEFAULT_BROKER_URL; ConnectionFactory connectionFactory; Connection connection; Session session; ThreadLocal<MessageConsumer> threadLocal = new ThreadLocal<>(); AtomicInteger count = new AtomicInteger(); public void init(){ try { connectionFactory = new ActiveMQConnectionFactory(USERNAME,PASSWORD,BROKEN_URL); connection = connectionFactory.createConnection(); connection.start(); session = connection.createSession(false,Session.AUTO_ACKNOWLEDGE); } catch (JMSException e) { e.printStackTrace(); } } public void getMessage(String disname){ try { Queue queue = session.createQueue(disname); MessageConsumer consumer = null; if(threadLocal.get()!=null){ consumer = threadLocal.get(); }else{ consumer = session.createConsumer(queue); threadLocal.set(consumer); } while(true){ Thread.sleep(1000); TextMessage msg = (TextMessage) consumer.receive(); if(msg!=null) { msg.acknowledge(); System.out.println(Thread.currentThread().getName()+": Consumer:消费了一条消息:"+msg.getText()+"-->"+count.getAndIncrement()); }else { break; } } } catch (JMSException e) { e.printStackTrace(); } catch (InterruptedException e) { e.printStackTrace(); } } }
3、创建生产者测试类
package com.wzl.demo.action; import com.wzl.demo.utils.ActiveMQProducter; public class TestMQProducter { public static void main(String[] args){ ActiveMQProducter producter = new ActiveMQProducter(); producter.init(); TestMQProducter testMq = new TestMQProducter(); try { Thread.sleep(1000); } catch (InterruptedException e) { e.printStackTrace(); } //Thread 1 new Thread(testMq.new ProductorMq(producter)).start(); //Thread 2 new Thread(testMq.new ProductorMq(producter)).start(); //Thread 3 new Thread(testMq.new ProductorMq(producter)).start(); //Thread 4 new Thread(testMq.new ProductorMq(producter)).start(); //Thread 5 new Thread(testMq.new ProductorMq(producter)).start(); } private class ProductorMq implements Runnable{ ActiveMQProducter producter; public ProductorMq(ActiveMQProducter producter){ this.producter = producter; } @Override public void run() { while(true){ try { producter.sendMessage("Jaycekon-MQ"); Thread.sleep(10000); } catch (InterruptedException e) { e.printStackTrace(); } } } } }
4、创建消费者测试类
package com.wzl.demo.action; import com.wzl.demo.utils.ActiveMQConsumer; public class TestMQConsumer { public static void main(String[] args){ ActiveMQConsumer comsumer = new ActiveMQConsumer(); comsumer.init(); TestMQConsumer testConsumer = new TestMQConsumer(); new Thread(testConsumer.new ConsumerMq(comsumer)).start(); new Thread(testConsumer.new ConsumerMq(comsumer)).start(); new Thread(testConsumer.new ConsumerMq(comsumer)).start(); new Thread(testConsumer.new ConsumerMq(comsumer)).start(); } private class ConsumerMq implements Runnable{ ActiveMQConsumer comsumer; public ConsumerMq(ActiveMQConsumer comsumer){ this.comsumer = comsumer; } @Override public void run() { while(true){ try { comsumer.getMessage("Jaycekon-MQ"); Thread.sleep(10000); } catch (InterruptedException e) { e.printStackTrace(); } } } } }
运行生成者测试类和消费测试类,可以观看服务端可视化界面的数量变化。
标签:它的 inter stat trace com pre java ati 说明文档
原文地址:https://www.cnblogs.com/wzlblog/p/10231172.html