订阅/广播模式

 

 

发送端：

import java.io.IOException;import com.rabbitmq.client.ConnectionFactory;import com.rabbitmq.client.Connection;import com.rabbitmq.client.Channel;public class EmitLog {    private static final String EXCHANGE_NAME = "logs";    public static void main(String[] argv)                  throws java.io.IOException {        ConnectionFactory factory = new ConnectionFactory();        factory.setHost("localhost");        Connection connection = factory.newConnection();        Channel channel = connection.createChannel();        channel.exchangeDeclare(EXCHANGE_NAME, "fanout");        String message = getMessage(argv);        channel.basicPublish(EXCHANGE_NAME, "", null, message.getBytes());        System.out.println(" [x] Sent '" + message + "'");        channel.close();        connection.close();    }    //...}

　　接收端：

import com.rabbitmq.client.*;import java.io.IOException;public class ReceiveLogs {  private static final String EXCHANGE_NAME = "logs";  public static void main(String[] argv) throws Exception {    ConnectionFactory factory = new ConnectionFactory();    factory.setHost("localhost");    Connection connection = factory.newConnection();    Channel channel = connection.createChannel();    channel.exchangeDeclare(EXCHANGE_NAME, "fanout");    String queueName = channel.queueDeclare().getQueue();    channel.queueBind(queueName, EXCHANGE_NAME, "");    System.out.println(" [*] Waiting for messages. To exit press CTRL+C");    Consumer consumer = new DefaultConsumer(channel) {      @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(" [x] Received '" + message + "'");      }    };    channel.basicConsume(queueName, true, consumer);  }}