ActiveMQ消息中间件Producer和Consumer
生产者代码：java
package com.java1234.activemq;
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.ActiveMQConnection;
import org.apache.activemq.ActiveMQConnectionFactory;
/**
* 消息生产者
* @author Administrator
*
*/
public class JMSProducer {
private static final String USERNAME=ActiveMQConnection.DEFAULT_USER; // 默认的链接用户名
private static final String PASSWORD=ActiveMQConnection.DEFAULT_PASSWORD; // 默认的链接密码
private static final String BROKEURL=ActiveMQConnection.DEFAULT_BROKER_URL; // 默认的链接地址
private static final int SENDNUM=10; // 发送的消息数量
public static void main(String[] args) {
ConnectionFactory connectionFactory; // 链接工厂
Connection connection = null; // 链接
Session session; // 会话 接受或者发送消息的线程
Destination destination; // 消息的目的地
MessageProducer messageProducer; // 消息生产者
// 实例化链接工厂
connectionFactory=new ActiveMQConnectionFactory(JMSProducer.USERNAME, JMSProducer.PASSWORD, JMSProducer.BROKEURL);
try {
connection=connectionFactory.createConnection(); // 经过链接工厂获取链接
connection.start(); // 启动链接
session=connection.createSession(Boolean.TRUE, Session.AUTO_ACKNOWLEDGE); // 建立Session
destination=session.createQueue("FirstQueue1"); // 建立消息队列
messageProducer=session.createProducer(destination); // 建立消息生产者
sendMessage(session, messageProducer); // 发送消息
session.commit();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally{
if(connection!=null){
try {
connection.close();
} catch (JMSException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
/**
* 发送消息
* @param session
* @param messageProducer
* @throws Exception
*/
public static void sendMessage(Session session,MessageProducer messageProducer)throws Exception{
for(int i=0;i<JMSProducer.SENDNUM;i++){
TextMessage message=session.createTextMessage("ActiveMQ 发送的消息"+i);
System.out.println("发送消息："+"ActiveMQ 发送的消息"+i);
messageProducer.send(message);
}
}
}
消费者分两种：apache
1.主动接受消息receive()session
package com.java1234.activemq;
import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.MessageConsumer;
import javax.jms.Session;
import javax.jms.TextMessage;
import org.apache.activemq.ActiveMQConnection;
import org.apache.activemq.ActiveMQConnectionFactory;
/**
* 消息消费者
* @author Administrator
*
*/
public class JMSConsumer {
private static final String USERNAME=ActiveMQConnection.DEFAULT_USER; // 默认的链接用户名
private static final String PASSWORD=ActiveMQConnection.DEFAULT_PASSWORD; // 默认的链接密码
private static final String BROKEURL=ActiveMQConnection.DEFAULT_BROKER_URL; // 默认的链接地址
public static void main(String[] args) {
ConnectionFactory connectionFactory; // 链接工厂
Connection connection = null; // 链接
Session session; // 会话 接受或者发送消息的线程
Destination destination; // 消息的目的地
MessageConsumer messageConsumer; // 消息的消费者
// 实例化链接工厂
connectionFactory=new ActiveMQConnectionFactory(JMSConsumer.USERNAME, JMSConsumer.PASSWORD, JMSConsumer.BROKEURL);
try {
connection=connectionFactory.createConnection(); // 经过链接工厂获取链接
connection.start(); // 启动链接
session=connection.createSession(Boolean.FALSE, Session.AUTO_ACKNOWLEDGE); // 建立Session
destination=session.createQueue("FirstQueue1"); // 建立链接的消息队列
messageConsumer=session.createConsumer(destination); // 建立消息消费者
while(true){
TextMessage textMessage=(TextMessage)messageConsumer.receive(100000);
if(textMessage!=null){
System.out.println("收到的消息："+textMessage.getText());
}else{
break;
}
}
} catch (JMSException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
2.使用listener被动监听消息（非阻塞的）（观察者模式）异步
Listener代码ide
package com.java1234.activemq;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageListener;
import javax.jms.TextMessage;
/**
* 消息监听
* @author Administrator
*
*/
public class Listener implements MessageListener{
@Override
public void onMessage(Message message) {
// TODO Auto-generated method stub
try {
System.out.println("收到的消息："+((TextMessage)message).getText());
} catch (JMSException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
package com.java1234.activemq;
import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.MessageConsumer;
import javax.jms.Session;
import javax.jms.TextMessage;
import org.apache.activemq.ActiveMQConnection;
import org.apache.activemq.ActiveMQConnectionFactory;
/**
* 消息消费者
* @author Administrator
*
*/
public class JMSConsumer2 {
private static final String USERNAME=ActiveMQConnection.DEFAULT_USER; // 默认的链接用户名
private static final String PASSWORD=ActiveMQConnection.DEFAULT_PASSWORD; // 默认的链接密码
private static final String BROKEURL=ActiveMQConnection.DEFAULT_BROKER_URL; // 默认的链接地址
public static void main(String[] args) {
ConnectionFactory connectionFactory; // 链接工厂
Connection connection = null; // 链接
Session session; // 会话 接受或者发送消息的线程
Destination destination; // 消息的目的地
MessageConsumer messageConsumer; // 消息的消费者
// 实例化链接工厂
connectionFactory=new ActiveMQConnectionFactory(JMSConsumer2.USERNAME, JMSConsumer2.PASSWORD, JMSConsumer2.BROKEURL);
try {
connection=connectionFactory.createConnection(); // 经过链接工厂获取链接
connection.start(); // 启动链接
session=connection.createSession(Boolean.FALSE, Session.AUTO_ACKNOWLEDGE); // 建立Session
destination=session.createQueue("FirstQueue1"); // 建立链接的消息队列
messageConsumer=session.createConsumer(destination); // 建立消息消费者
messageConsumer.setMessageListener(new Listener()); // 注册消息监听
} catch (JMSException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
若是想主动的去接受消息，而不用异步消息监听的话，把consumer.setMessageListener(this)改成Message message = consumer.receive()，手动去调用MessageConsumer的receive方法便可。this
参考文章：spa