• rabbitMQ学习(二)


    一端发送,多端消费

    发送端:

    import java.io.IOException;
    import com.rabbitmq.client.ConnectionFactory;
    import com.rabbitmq.client.Connection;
    import com.rabbitmq.client.Channel;
    import com.rabbitmq.client.MessageProperties;
    
    public class NewTask {
    
      private static final String TASK_QUEUE_NAME = "task_queue";
    
      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.queueDeclare(TASK_QUEUE_NAME, true, false, false, null);
    
        String message = getMessage(argv);
    
        channel.basicPublish( "", TASK_QUEUE_NAME,
                MessageProperties.PERSISTENT_TEXT_PLAIN,
                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 Worker {
      private static final String TASK_QUEUE_NAME = "task_queue";
    
      public static void main(String[] argv) throws Exception {
        ConnectionFactory factory = new ConnectionFactory();
        factory.setHost("localhost");
        final Connection connection = factory.newConnection();
        final Channel channel = connection.createChannel();
    
        channel.queueDeclare(TASK_QUEUE_NAME, true, false, false, null);
        System.out.println(" [*] Waiting for messages. To exit press CTRL+C");
    
        channel.basicQos(1);
    
        final 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 + "'");
            try {
              doWork(message);
            } finally {
              System.out.println(" [x] Done");
              channel.basicAck(envelope.getDeliveryTag(), false);
            }
          }
        };
        channel.basicConsume(TASK_QUEUE_NAME, false, consumer);
      }
    
      private static void doWork(String task) {
        for (char ch : task.toCharArray()) {
          if (ch == '.') {
            try {
              Thread.sleep(1000);
            } catch (InterruptedException _ignored) {
              Thread.currentThread().interrupt();
            }
          }
        }
      }
    }
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  • 原文地址:https://www.cnblogs.com/tietazhan/p/5692023.html
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