RabbitMQ 几种工作模式---（二）work

 

 

一个生产者对应多个消费者，但一条消息只能有一个消费者获得（可轮循获取）！！！

 

生产者：

package com..workqueue;

import com..utils.RabbitConstant;
import com..utils.RabbitUtils;
import com.google.gson.Gson;
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;

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

public class OrderSystem {
    public static void main(String[] args) throws IOException, TimeoutException {
        Connection connection = RabbitUtils.getConnection();
        Channel channel = connection.createChannel();
        channel.queueDeclare(RabbitConstant.QUEUE_SMS, false, false, false, null);
        for(int i = 1 ; i <= 10 ; i++) {
            SMS sms = new SMS("乘客" + i, "13900000" + i, "您的车票已预订成功");
            String jsonSMS = new Gson().toJson(sms);
            channel.basicPublish("" , RabbitConstant.QUEUE_SMS , null , jsonSMS.getBytes());
        }
        System.out.println("发送数据成功");
        channel.close();
        connection.close();
    }
}

 

 

 

3个消费者接收10条消息：

（1）：

package com..workqueue;


import com..utils.RabbitConstant;
import com..utils.RabbitUtils;
import com.rabbitmq.client.*;

import java.io.IOException;

public class SMSSender1 {
    public static void main(String[] args) throws IOException {
        Connection connection = RabbitUtils.getConnection();
        final Channel channel = connection.createChannel();

        channel.queueDeclare(RabbitConstant.QUEUE_SMS, false, false, false, null);
        //如果不写basicQos（1），则自动MQ会将所有请求平均发送给所有消费者
        //basicQos,MQ不再对消费者一次发送多个请求，而是消费者处理完一个消息后（确认后），在从队列中获取一个新的
        channel.basicQos(1);//处理完一个取一个
        channel.basicConsume(RabbitConstant.QUEUE_SMS , false , new DefaultConsumer(channel){
            @Override
            public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties, byte[] body) throws IOException {
                String jsonSMS = new String(body);
                System.out.println("SMSSender1-短信发送成功:" + jsonSMS);
                try {
                    Thread.sleep(10);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                channel.basicAck(envelope.getDeliveryTag() , false);
            }
        });
    }
}

后台打印信息：

 

 

 （2）：

package com..workqueue;


import com..utils.RabbitConstant;
import com..utils.RabbitUtils;
import com.rabbitmq.client.*;

import java.io.IOException;

public class SMSSender2 {
    public static void main(String[] args) throws IOException {
        Connection connection = RabbitUtils.getConnection();
        final Channel channel = connection.createChannel();
        channel.queueDeclare(RabbitConstant.QUEUE_SMS, false, false, false, null);
        channel.basicQos(1);
        channel.basicConsume(RabbitConstant.QUEUE_SMS , false , new DefaultConsumer(channel){
            @Override
            public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties, byte[] body) throws IOException {
                String jsonSMS = new String(body);
                System.out.println("SMSSender2-短信发送成功:" + jsonSMS);
                try {
                    Thread.sleep(100);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                channel.basicAck(envelope.getDeliveryTag() , false);
            }
        });
    }
}

 

后台打印信息：

 

 

（3）：

package com..workqueue;


import com..utils.RabbitConstant;
import com..utils.RabbitUtils;
import com.rabbitmq.client.*;

import java.io.IOException;

public class SMSSender3 {
    public static void main(String[] args) throws IOException {
        Connection connection = RabbitUtils.getConnection();
        final Channel channel = connection.createChannel();
        channel.queueDeclare(RabbitConstant.QUEUE_SMS, false, false, false, null);
        channel.basicQos(1);
        channel.basicConsume(RabbitConstant.QUEUE_SMS , false , new DefaultConsumer(channel){
            @Override
            public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties, byte[] body) throws IOException {
                String jsonSMS = new String(body);
                System.out.println("SMSSender3-短信发送成功:" + jsonSMS);
                try {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                channel.basicAck(envelope.getDeliveryTag() , false);
            }
        });
    }
}

 

后台打印信息：