RabbitMQ可靠性消息投遞

RabbitMQ可靠性消息投遞是通過confirm确認消息機制來實作的

Confirm消息确認機制：

消息确認,是指生産者投遞消息以後，如果MQ服務收到消息，則會給生産者一個應答。生産者接收到應答，用來确認這條消息是否正常發送到MQ服務。

Confirm消息确認實作：

（1）在Channel上開啟确認模式：channel.confirmSelect(）;

  (2)在channel上添加監聽:addConfirmListener(), 監聽傳回結果（成功/失敗）根據具體的傳回結果，來判斷對消息是否重新推送/記錄日志等後續處理。

package com.lfv.rabbitmq.api.confirm;

import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;
import com.rabbitmq.client.QueueingConsumer;
import com.rabbitmq.client.QueueingConsumer.Delivery;

public class Consumer {
	public static void main(String[] args) throws Exception{
		//1建立ConnectionFactory
				ConnectionFactory connectionFactory = new ConnectionFactory();
				connectionFactory.setHost("192.168.0.10");
				connectionFactory.setPort(5672);
				connectionFactory.setUsername("admin");
				connectionFactory.setPassword("admin");
				connectionFactory.setVirtualHost("/");
				
				//2擷取Connection
				Connection connection = connectionFactory.newConnection();
				
				//3通過connection建立一個新的Channel
				Channel channel = connection.createChannel();
				
				String exchangeName = "test_confirm_exchange";
				String routingKey = "confirm.save";
				String queueName="test_confirm_queue";
				//4 聲明交換機和隊列 然後進行綁定設定，最後指定路由key
				channel.exchangeDeclare(exchangeName, "topic",true);
				channel.queueDeclare(queueName, true, false, false, null);
				channel.queueBind(queueName, exchangeName, routingKey);
				
				QueueingConsumer queueingConsumer = new QueueingConsumer(channel);
				channel.basicConsume(queueName, true,queueingConsumer);
				
				for(;;) {
					Delivery deliver = queueingConsumer.nextDelivery();
					String msg = new String(deliver.getBody());
					System.out.println("----消費端----："+msg);
				}
				
	}
}
           

package com.lfv.rabbitmq.api.confirm;

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

import com.rabbitmq.client.Channel;
import com.rabbitmq.client.ConfirmListener;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;

public class Producer {

	public static void main(String[] args) throws IOException, TimeoutException {
		
		//1建立ConnectionFactory
		ConnectionFactory connectionFactory = new ConnectionFactory();
		connectionFactory.setHost("192.168.0.10");
		connectionFactory.setPort(5672);
		connectionFactory.setUsername("admin");
		connectionFactory.setPassword("admin");
		connectionFactory.setVirtualHost("/");
		
		//2擷取Connection
		Connection connection = connectionFactory.newConnection();
		
		//3通過connection建立一個新的Channel
		Channel channel = connection.createChannel();
		//4制定消息投遞模式：消息确認模式
		channel.confirmSelect();
		
		String exchangeName = "test_confirm_exchange";
		String routingKey = "confirm.save";
		
		//5發送消息
		String msg ="Hello RabbitMQ send confirm message!";
		channel.basicPublish(exchangeName, routingKey, null, msg.getBytes());
		
		//6添加确認監聽
		channel.addConfirmListener(new ConfirmListener() {

			@Override
			public void handleAck(long deliveryTag, boolean multiple) throws IOException {
				System.out.println("----ack !------");
			}

			@Override
			public void handleNack(long deliveryTag, boolean multiple) throws IOException {
				
				System.out.println("----no ack !------");
			}
			
		});
		
	}
}
           

啟動程式後檢視MQ管控台：