Java使用RabbitMQ之公平分发

发送消息：

 package org.study.workfair;

 import com.rabbitmq.client.Channel;
 import com.rabbitmq.client.Connection;
 import org.junit.Test;
 import org.study.utils.ConnectionUtils;

 import java.io.IOException;
 import java.util.concurrent.TimeoutException;

 public class Sender {
     public static final String QUEUE_NAME = "test_simple_queue";

     @Test
     public void send() throws IOException, TimeoutException, InterruptedException {
         // 获取连接
         Connection conn = ConnectionUtils.getConnection();
         // 获取通道
         Channel channel = conn.createChannel();
         //创建队列
         channel.queueDeclare(QUEUE_NAME, false, false, false, null);
         //每个消费者发送确认消息前，只发送一条消息
         channel.basicQos(1);
         String msg = "hello rabbitmq!";

         for (int i = 0; i < 50; i++) {
             String tempStr = i + " " + msg;
             //发送消息
             channel.basicPublish("", QUEUE_NAME, null, tempStr.getBytes());
             System.out.println("[send] msg " + i + ": " + msg);
             Thread.sleep(100);
         }

         channel.close();
         conn.close();
     }
 }

接受消息：

 package org.study.workfair;

 import com.rabbitmq.client.*;
 import org.junit.Test;
 import org.study.utils.ConnectionUtils;

 import java.io.IOException;
 import java.util.concurrent.TimeoutException;

 public class Recv {
     public static final String QUEUE_NAME = "test_simple_queue";

     @Test
     public void recv() throws IOException, TimeoutException, InterruptedException {
         Connection conn = ConnectionUtils.getConnection();
         Channel channel = conn.createChannel();
         channel.queueDeclare(QUEUE_NAME, false, false, false, null);
         channel.basicQos(1);

         //定义消费者
         DefaultConsumer consumer = new DefaultConsumer(channel) {
             //重写获取到达消息
             @Override
             public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties, byte[] body) throws IOException {
 //                super.handleDelivery(consumerTag, envelope, properties, body);
                 String msg = new String(body, "utf-8");
                 System.out.println("[1] recv: " + msg);

                 try {
                     Thread.sleep(1000);
                 } catch (InterruptedException e) {
                     e.printStackTrace();
                 }finally {
                     System.out.println("[1] done!");
                     channel.basicAck(envelope.getDeliveryTag(),false);
                 }
             }
         };

         while (true) {
             //监听队列
             channel.basicConsume(QUEUE_NAME, false, consumer);
             Thread.sleep(100);
         }

     }
 }