Rabbitmq 消息模式Simple 模式

Simple 模式是最简单的一个模式，由一个生产者，一个队列，一个消费者组成，生产者将消息通过交换机（如不定义交换机，会使用默认的交换机）把消息存储到队列，消费者从队列中取出消息进行处理。

用 Java demo 实现此模式

package com.tszr.rabbitmq;

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

import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.util.concurrent.TimeoutException;

public class Send {
    private final static String QUEUE_NAME = "queue1";

    public static void main(String[] args){
        // 1、创建连接工程
        ConnectionFactory factory = new ConnectionFactory();
        factory.setHost("127.0.0.1");
        factory.setVirtualHost("/");

        Connection connection = null;
        Channel channel = null;

        try {
            // 2、创建连接、通道
            connection = factory.newConnection();
            channel = connection.createChannel();
            // 3、声明队列
            channel.queueDeclare(QUEUE_NAME, false, false, false, null);
            // 消息内容
            String message = "Hello world";
            // 4、发送消息到指定队列
            channel.basicPublish("", QUEUE_NAME, null, message.getBytes(StandardCharsets.UTF_8));
            System.out.println(" [x] Sent '" + message + "'");
        } catch (TimeoutException | IOException e) {
            e.printStackTrace();
        } finally {
            // 关闭通道
            if (channel != null && channel.isOpen()) {
                try {
                    channel.close();
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
            // 关闭连接
            if (connection != null && connection.isOpen()) {
                try {
                    connection.close();
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        }
    }
}

package com.tszr.rabbitmq;

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

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

public class Recv {
    private final static String QUEUE_NAME = "queue1";

    public static void main(String[] args) throws IOException, TimeoutException {
        // 1、创建连接工程
        ConnectionFactory factory = new ConnectionFactory();
        factory.setHost("127.0.0.1");
        factory.setVirtualHost("/");

        // 2、获取 Connection和 Channel
        Connection connection = factory.newConnection();
        Channel channel = connection.createChannel();

        // 3、声明队列
        channel.queueDeclare(QUEUE_NAME, false, false, false, null);
        System.out.println(" [*] Waiting for messages. To exit press CTRL+C");

        DeliverCallback deliverCallback = (consumerTag, delivery) -> {
            String message = new String(delivery.getBody(), "UTF-8");
            System.out.println(" [x] Received '" + message + "'");
        };
        channel.basicConsume(QUEUE_NAME, true, deliverCallback, consumerTag -> {
        });
    }
}

<dependencies>
        <dependency>
            <groupId>org.springframework.amqp</groupId>
            <artifactId>spring-rabbit</artifactId>
            <version>2.3.1</version>
        </dependency>
    </dependencies>