java怎么连接并访问activemq

<dependency>
 <groupId>org.apache.activemq</groupId>
 <artifactId>activemq-core</artifactId>
 <version>5.7.0</version>
</dependency>

package cn.duanjt;

import java.io.IOException;

import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageConsumer;
import javax.jms.MessageListener;
import javax.jms.Queue;
import javax.jms.Session;
import javax.jms.TextMessage;

import org.apache.activemq.ActiveMQConnection;
import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.ActiveMQSession;

/**
 * 消费者
 * @author 段江涛
 * @date 2018-11-23
 */
public class Consumer {
 // 全部使用缺省值
 private static String USERNAME = ActiveMQConnection.DEFAULT_USER;
 private static String PASSWORD = ActiveMQConnection.DEFAULT_PASSWORD;
 private static String BROKER = ActiveMQConnection.DEFAULT_BROKER_URL;

 public static void main(String[] args) throws IOException {
  ConnectionFactory factory;
  Connection connection = null;
  Session session;
  Queue queue;
  Message message;
  MessageConsumer consumer;

  try {
   factory = new ActiveMQConnectionFactory(USERNAME, PASSWORD, BROKER);
   connection = factory.createConnection();
   connection.start();
   
   session = connection.createSession(false, ActiveMQSession.AUTO_ACKNOWLEDGE);
   queue = session.createQueue("zd-duanjt");
   consumer = session.createConsumer(queue);
   //注释部分为同步方式
   /*while (true) {
    message = consumer.receive();
    TextMessage tmsg = (TextMessage) message;
    System.out.println("接收到数据:" + tmsg.getText());
   }*/
   //下面是异步方式，通过注册监听
   consumer.setMessageListener(new MessageListener() {
    
    @Override
    public void onMessage(Message message) {
     TextMessage tmsg = (TextMessage) message; 
     try {
      System.out.println("接收到数据:" + tmsg.getText());
     } catch (JMSException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
     }
    }
   });
   
  } catch (Exception e) {
   e.printStackTrace();
  } finally{
   // 之前在这里把连接关闭了，导致一直无法消费数据，注意，这里千万不要关闭连接
  }
 }
}

package cn.duanjt;

import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageProducer;
import javax.jms.Queue;
import javax.jms.Session;

import org.apache.activemq.ActiveMQConnection;
import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.ActiveMQSession;

/**
 * 生产者产生数据
 * @author 段江涛
 * @date 2018-11-23
 */
public class Productor {
 // 全部使用缺省值
 private static String USERNAME = ActiveMQConnection.DEFAULT_USER;
 private static String PASSWORD = ActiveMQConnection.DEFAULT_PASSWORD;
 private static String BROKER = ActiveMQConnection.DEFAULT_BROKER_URL;

 public static void main(String[] args) throws JMSException {
  ConnectionFactory factory = new ActiveMQConnectionFactory(USERNAME, PASSWORD, BROKER);
  Connection connection = factory.createConnection();
  connection.start();
  Session session = connection.createSession(false, ActiveMQSession.AUTO_ACKNOWLEDGE);

  Queue queue = session.createQueue("zd-duanjt");
  MessageProducer productor = session.createProducer(queue);
  for (int i = 0; i < 3; i++) {
   String msg = "Hello world：" + i;
   Message message = session.createTextMessage(msg);
   productor.send(message);
   System.out.println("发送数据:" + msg);
  }
  
  connection.close();
  
 }
}