java-rabbitmq-官网实例03

我不是女神ヾ 2024-02-18 15:23 52阅读 0赞

java-rabbitmq-官网实例03  
  
  
描述：  
发布订阅模式，Publish/Subscribe，FANOUT"扇出"交换器的使用  
  
  
运行：  
D3\_EmitLog.main();  
D3\_ReceiveLogs.main();

package com.example.tutorials;
    
    
    import com.rabbitmq.client.BuiltinExchangeType;
    import com.rabbitmq.client.Channel;
    import com.rabbitmq.client.Connection;
    import com.rabbitmq.client.ConnectionFactory;
    
    
    import java.util.Scanner;
    
    
    /**
     * 发布订阅模式，Publish/Subscribe（FANOUT"扇出"交换器）
     * @create 2017-08-29
     * amqp-client 4.2.0
     **/
    public class D3_EmitLog {
        private static final String EXCHANGE_NAME = "logs";
    
    
        public static void main(String[] argv) throws Exception {
            ConnectionFactory factory = new ConnectionFactory();
            //设置登录账号
            factory.setHost(ServerInfo.host);
            factory.setPort(ServerInfo.port);
            factory.setUsername(ServerInfo.uName);
            factory.setPassword(ServerInfo.uPwd);
            //链接服务器
            Connection connection = factory.newConnection();
            Channel channel = connection.createChannel();
    
    
            //定义交换器（使用消息广播模式，如果没有任何队列绑定到交换器，发送的消息将丢失）
            channel.exchangeDeclare(EXCHANGE_NAME, BuiltinExchangeType.FANOUT);
    
    
    
    
            //发送消息
            System.out.println("输入要发送的消息，退出输入 x ");
            String message = "";
            do{
                Scanner scanner = new Scanner(System.in);
                message = scanner.next();
                channel.basicPublish(EXCHANGE_NAME, "", null, message.getBytes("UTF-8"));
                System.out.println(" [x] Sent '" + message + "'");
            }while(!"x".equals(message));
            channel.close();
            connection.close();
        }
    
    
    }

package com.example.tutorials;
    
    
    import com.rabbitmq.client.*;
    
    
    import java.io.IOException;
    import java.util.concurrent.TimeoutException;
    
    
    /**
     * 发布订阅模式，Publish/Subscribe（FANOUT"扇出"交换器）
     * @create 2017-08-29
     * amqp-client 4.2.0
     **/
    public class D3_ReceiveLogs {
        private static final String EXCHANGE_NAME = "logs";
    
    
        public static void main(String[] argv) throws Exception {
            //多个订阅者同时绑定到一个交换器时，向一个交换器发送消息，所有订阅者将同时收到消息
            //启动订阅者1
            new Thread(new Runnable() {
                @Override
                public void run() {
                    try {
                        startSubscribe("Subscribe_01");
                    } catch (IOException e) {
                        e.printStackTrace();
                    } catch (TimeoutException e) {
                        e.printStackTrace();
                    }
                }
            }).start();
            //启动订阅者2
            new Thread(new Runnable() {
                @Override
                public void run() {
                    try {
                        startSubscribe("Subscribe_02");
                    } catch (IOException e) {
                        e.printStackTrace();
                    } catch (TimeoutException e) {
                        e.printStackTrace();
                    }
                }
            }).start();
        }
    
    
        public static void startSubscribe(final String consumerName) throws IOException, TimeoutException {
    
    
            ConnectionFactory factory = new ConnectionFactory();
            //设置登录账号
            factory.setHost(ServerInfo.host);
            factory.setPort(ServerInfo.port);
            factory.setUsername(ServerInfo.uName);
            factory.setPassword(ServerInfo.uPwd);
            //链接服务器
            Connection connection = factory.newConnection();
            Channel channel = connection.createChannel();
            //定义一个"扇出"交换器
            channel.exchangeDeclare(EXCHANGE_NAME, BuiltinExchangeType.FANOUT);
            String queueName = channel.queueDeclare().getQueue();//获取队列名称
            System.out.println(" ["+consumerName+"] 队列名："+queueName);
            channel.queueBind(queueName, EXCHANGE_NAME, "");//绑定队列到交换器
    
    
            System.out.println(" ["+consumerName+"] Waiting for messages. To exit press CTRL+C");
    
    
            Consumer consumer = new DefaultConsumer(channel) {
                @Override
                public void handleConsumeOk(String consumerTag) {
                    super.handleConsumeOk(consumerTag);
                    System.out.println(" ["+consumerName+"] 已经注册成功！ ");
                }
                @Override
                public void handleDelivery(String consumerTag, Envelope envelope,
                                           AMQP.BasicProperties properties, byte[] body) throws IOException {
                    String message = new String(body, "UTF-8");
                    System.out.println(" ["+consumerName+"] Received '" + message + "'");
                }
            };
            channel.basicConsume(queueName, true, consumer);
        }
    }