ActiveMQ学习：搭建activeMQ及hello world

一、下载ActiveMQ：http://activemq.apache.org/download-archives.html，此处以window系统为例。

二、解压，得到文件如图：

bin：二进制文件目录，在里边寻找对应的activemq.bat启动activeMQ；

conf：配置文件项；

data：存放日志、临时数据等；

三、启动ActiveMQ：

使用bin目录下activemq.bat启动，启动成功后效果如图：

在浏览器输入：localhost：8161/admin 或者127.0.0.1：:8161/admin，查看admin页面效果（不同的MQ版本，界面有细微差别）：

四、入门小demo

首先引入对应的依赖包：

  	<!-- 配置JMS依赖 -->
  	<!-- https://mvnrepository.com/artifact/org.glassfish.main.javaee-api/javax.jms -->
	<dependency>
	    <groupId>org.glassfish.main.javaee-api</groupId>
	    <artifactId>javax.jms</artifactId>
	    <version>3.1.2.2</version>
	</dependency>
  	
  
  	<!-- 配置MQ依赖 -->
	<!-- https://mvnrepository.com/artifact/org.apache.activemq/activemq-client -->
	<dependency>
	    <groupId>org.apache.activemq</groupId>
	    <artifactId>activemq-client</artifactId>
	    <version>5.15.2</version>
	</dependency>

消息生产者Sender：

public class Sender implements Runnable{
	public boolean flag = true;
	public void setFlag(boolean flag) {
		this.flag = flag;
	}
	
	//环境准备
	private Connection getConnection(String name,String password,String address) throws Exception{
		//建立ConnectionFactory工厂对象
		ConnectionFactory connectionFactory = new ActiveMQConnectionFactory(
				ActiveMQConnectionFactory.DEFAULT_USER,
				ActiveMQConnectionFactory.DEFAULT_PASSWORD,
				"tcp://"+address); 
		//通过工厂建立连接
		Connection connection = connectionFactory.createConnection();
		
		return connection;
	}
	
	public void run() {
		Sender sender = null;
		Connection connection = null;
		MessageProducer producer = null;
		try {
			sender = new Sender();
			connection = sender.getConnection("admin", "admin", "127.0.0.1:61616");
			connection.start();
			//获取session
			Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
			//创建队列
			Destination destination = session.createQueue("firstQueue");
			//创建生产者
			producer = session.createProducer(null);
			//创建消息
			TextMessage msg = null;
			int index = 0;
			while(flag) {
				msg = session.createTextMessage("我是第"+index+++"条信息内容");
				//此处可以设定参数：目标地址、具体的参数信息、传达数据的模式、优先级、消息过期时间
				//在发送数据时指定队列(Destination)
				producer.send(destination, msg);
				//休眠一秒
				TimeUnit.SECONDS.sleep(1);
			}
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			//关闭连接
			try {
				if(connection != null) {
					connection.close();
				}else {
					throw new RuntimeException("哈哈哈");
				}
			}catch (JMSException e) {
				e.printStackTrace();
			}
		}
		
	}
}

消息消费者Receiver：

public class Receiver implements Runnable {
	//环境准备
	private Connection getConnection(String name,String password,String address) throws Exception{
		ConnectionFactory connectionFactory = new ActiveMQConnectionFactory(
				ActiveMQConnectionFactory.DEFAULT_USER,
				ActiveMQConnectionFactory.DEFAULT_PASSWORD,
				"tcp://"+address);
		//通过工厂建立连接
		Connection connection = connectionFactory.createConnection();
		return connection;
	}


	public void run() {
		TextMessage msg = null;
		Connection connection = null;
		try {
			connection = getConnection("admin","admin","127.0.0.1:61616");
			connection.start();
			//获取session
			Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
			//创建队列
			Destination destination = session.createQueue("firstQueue");
			//创建MessageConsumer
			MessageConsumer consumer = session.createConsumer(destination);
			while(true) {
				//可以设置receive参数： 等/不等/等具体时间后不等
				msg = (TextMessage) consumer.receive();
				System.out.println("获取的数据为："+msg);
			}
		} catch (Exception e) {
			e.printStackTrace();
		}

	}

}

启动：

/**
 * Hello world!
 * created by txd 20190115
 */
public class App {
	public static void main(String[] args) {
		Sender s1 = new Sender();
		Thread sender = new Thread(s1);
		sender.setName("sender");
		
		Thread receiver = new Thread(new Receiver());
		receiver.setName("receiver");
		
		//启动producer
		sender.start();
		
		try {
			TimeUnit.SECONDS.sleep(30);
		} catch (InterruptedException e) {
			e.printStackTrace();
		}
		
		//启动消费者
		receiver.start();
		
		Random random = new Random(System.currentTimeMillis());
		while(true) {
			if(random.nextInt(100) > 50) {
				s1.setFlag(false);
			}
		}
		
	}
}

前往浏览器查看效果：

可见，小程序正在健康的运行着...