package com.example.demo;
import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.DeliveryMode;
import javax.jms.Destination;
import javax.jms.MessageProducer;
import javax.jms.Session;
import javax.jms.TextMessage;
import org.apache.activemq.ActiveMQConnection;
import org.apache.activemq.ActiveMQConnectionFactory;
/**
* <table border='1'>
* <tr>
* <td>JMS 公共</td>
* <td>点对点域</td>
* <td>发布/订阅域</td>
* </tr>
* <tr>
* <td>ConnectionFactory</td>
* <td>QueueConnectionFactory</td>
* <td>TopicConnectionFactory</td>
* </tr>
* <tr>
* <td>Connection</td>
* <td>QueueConnection</td>
* <td>TopicConnection</td>
* </tr>
* <tr>
* <td>Destination</td>
* <td>Queue</td>
* <td>Topic</td>
* </tr>
* <tr>
* <td>Session</td>
* <td>QueueSession</td>
* <td>TopicSession</td>
* </tr>
* <tr>
* <td>MessageProducer</td>
* <td>QueueSender</td>
* <td>TopicPublisher</td>
* </tr>
* <tr>
* <td>MessageConsumer</td>
* <td>QueueReceiver</td>
* <td>TopicSubscriber</td>
* </tr>
*
* </table>
*
* (1)、点对点方式(point-to-point) 点对点的消息发送方式主要建立在 Message
* Queue,Sender,reciever上,Message Queue 存贮消息, Sneder
* 发送消息,receive接收消息.具体点就是Sender Client发送Message Queue , 而 receiver
* Cliernt从Queue中接收消息和"发送消息已接受"到Quere,确认消息接收。
* 消息发送客户端与接收客户端没有时间上的依赖,发送客户端可以在任何时刻发送信息到Queue,而不需要知道接收客户端是不是在运行 (2)、发布/订阅
* 方式(publish/subscriber Messaging) 发布/订阅方式用于多接收客户端的方式.作为发布订阅的方式,可能存在多个接收客户端,
* 并且接收端客户端与发送客户端存在时间上的依赖。一个接收端只能接收他创建以后发送客户端发送的信息。作为subscriber
* ,在接收消息时有两种方法,destination的receive方法,和实现message listener 接口的onMessage 方法。
*
*
*/
public class Sender {
private static final int SEND_NUMBER = 5;
public static void main(String[] args) {
// ConnectionFactory :连接工厂,JMS 用它创建连接
ConnectionFactory connectionFactory;
// Connection :JMS 客户端到JMS Provider 的连接
Connection connection = null;
// Session: 一个发送或接收消息的线程
Session session;
// Destination :消息的目的地;消息发送给谁.
Destination destination;
// MessageProducer:消息发送者
MessageProducer producer;
// TextMessage message;
// 构造ConnectionFactory实例对象,此处采用ActiveMq的实现jar
connectionFactory = new ActiveMQConnectionFactory(ActiveMQConnection.DEFAULT_USER,
ActiveMQConnection.DEFAULT_PASSWORD, ActiveMQConnection.DEFAULT_BROKER_URL);
try {
// 构造从工厂得到连接对象
connection = connectionFactory.createConnection();
// 启动
connection.start();
// 获取操作连接
session = connection.createSession(Boolean.TRUE, Session.AUTO_ACKNOWLEDGE);
// 获取session注意参数值xingbo.xu-queue是一个服务器的queue,须在在ActiveMq的console配置
destination = session.createQueue("FirstQueue");
// 得到消息生成者【发送者】
producer = session.createProducer(destination);
// 设置不持久化,此处学习,实际根据项目决定
producer.setDeliveryMode(DeliveryMode.NON_PERSISTENT);
// 构造消息,此处写死,项目就是参数,或者方法获取
sendMessage(session, producer);
session.commit();
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (null != connection)
connection.close();
} catch (Throwable ignore) {
}
}
}
public static void sendMessage(Session session, MessageProducer producer) throws Exception {
for (int i = 1; i <= SEND_NUMBER; i++) {
String msg = "ActiveMq 发送的消息" + i;
TextMessage message = session.createTextMessage(msg);
// 发送消息到目的地方
System.out.println(msg);
producer.send(message);
}
}
}
package com.example.demo;
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.ActiveMQConnection;
import org.apache.activemq.ActiveMQConnectionFactory;
public class Receiver {
public static void main(String[] args) {
// ConnectionFactory :连接工厂,JMS 用它创建连接
ConnectionFactory connectionFactory;
// Connection :JMS 客户端到JMS Provider 的连接
Connection connection = null;
// Session: 一个发送或接收消息的线程
Session session;
// Destination :消息的目的地;消息发送给谁.
Destination destination;
// 消费者,消息接收者
MessageConsumer consumer;
connectionFactory = new ActiveMQConnectionFactory(ActiveMQConnection.DEFAULT_USER, ActiveMQConnection.DEFAULT_PASSWORD, ActiveMQConnection.DEFAULT_BROKER_URL);
try {
// 构造从工厂得到连接对象
connection = connectionFactory.createConnection();
// 启动
connection.start();
// 获取操作连接
session = connection.createSession(Boolean.FALSE, Session.AUTO_ACKNOWLEDGE);
// 获取session注意参数值xingbo.xu-queue是一个服务器的queue,须在在ActiveMq的console配置
destination = session.createQueue("FirstQueue");
consumer = session.createConsumer(destination);
while (true) {
// 设置接收者接收消息的时间,为了便于测试,这里谁定为100s
TextMessage message = (TextMessage) consumer.receive(100000);
if (null != message) {
System.out.println("收到消息----> " + message.getText());
} else {
break;
}
}
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (null != connection)
connection.close();
} catch (Throwable ignore) {
}
}
}
}