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();

        }

}