RabbitMQ整合Spring Booot【消费者应答模式】

生产者代码不变，消费者：

package com.toov5.Consumer;

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

import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.DefaultConsumer;
import com.rabbitmq.client.Envelope;
import com.rabbitmq.client.AMQP.BasicProperties;
import com.toov5.utils.MQConnectionUtils;

public class Consumer {
  
     //队列名称
        private static final String QUEUE_NAME = "test_queue";
        
        public static void main(String[] args) throws IOException, TimeoutException {
            System.out.println("消费者启动..........");
            //创建新的连接
        Connection connection = MQConnectionUtils.newConnection();
           //创建Channel
            Channel channel = connection.createChannel();
            // 消费者关联队列
            channel.queueDeclare(QUEUE_NAME, false, false, false, null);
            
              DefaultConsumer defaultConsumerr = new DefaultConsumer(channel) {
                  //监听获取消息
                    @Override
                    public void handleDelivery(String consumerTag, Envelope envelope, BasicProperties properties,
                            byte[] body) throws IOException {
                        String msg =new String(body,"UTF-8");
                        System.out.println("消费者获取生产者消息："+msg);
                    }
              };
            //牵手模式设置  默认自动应答模式  true:自动应答模式  
              channel.basicConsume(QUEUE_NAME, false, defaultConsumerr);//    fanse手动应答          
              
//            //关闭通道和连接
//             channel.close();
//             connection.close();
        }
}

手动应答。此时 消息队列的消息 一直没有被清除掉

生产者做如下修改就OK了：

package com.toov5.Consumer;

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

import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.DefaultConsumer;
import com.rabbitmq.client.Envelope;
import com.rabbitmq.client.AMQP.BasicProperties;
import com.toov5.utils.MQConnectionUtils;

public class Consumer {
  
     //队列名称
        private static final String QUEUE_NAME = "test_queue";
        
        public static void main(String[] args) throws IOException, TimeoutException {
            System.out.println("消费者启动..........");
            //创建新的连接
        Connection connection = MQConnectionUtils.newConnection();
           //创建Channel
            final Channel channel = connection.createChannel();
            // 消费者关联队列
            channel.queueDeclare(QUEUE_NAME, false, false, false, null);
            
              DefaultConsumer defaultConsumerr = new DefaultConsumer(channel) {
                  //监听获取消息
                    @Override
                    public void handleDelivery(String consumerTag, Envelope envelope, BasicProperties properties,
                            byte[] body) throws IOException {
                        String msg =new String(body,"UTF-8");
                        System.out.println("消费者获取生产者消息："+msg);
                        channel.basicAck(envelope.getDeliveryTag(), false);  //手动应答 告诉消息队列服务器 消费成功
                    }
              };
            //牵手模式设置  默认自动应答模式  true:自动应答模式  
              channel.basicConsume(QUEUE_NAME, false, defaultConsumerr);//    fanse手动应答          
              
//            //关闭通道和连接
//             channel.close();
//             connection.close();
        }
}