import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;
public class RabbitMQProducer {
    private final static String EXCHANGE_NAME = "direct_message_exchange";
    private final static String EXCHANGE_TYPE = "direct";
    public static void main(String[] args) {
        // 1. 創(chuàng)建連接工廠，設(shè)置連接參數(shù)
        ConnectionFactory connectionFactory = new ConnectionFactory();
        connectionFactory.setHost("localhost");
        connectionFactory.setPort(5672); // RabbitMQ默認(rèn)端口
        connectionFactory.setUsername("guest");
        connectionFactory.setPassword("guest");
        try (Connection connection = connectionFactory.newConnection();
             Channel channel = connection.createChannel()) {
            // 2. 聲明交換機(jī) (direct類型，持久化)
            channel.exchangeDeclare(EXCHANGE_NAME, EXCHANGE_TYPE, true);
            // 3. 聲明隊(duì)列 (持久化，非獨(dú)占，連接斷開時(shí)不自動(dòng)刪除)
            channel.queueDeclare("queue5", true, false, false, null);
            channel.queueDeclare("queue6", true, false, false, null);
            channel.queueDeclare("queue7", true, false, false, null);
            // 4. 綁定隊(duì)列到交換機(jī)，設(shè)置路由鍵
            channel.queueBind("queue5", EXCHANGE_NAME, "order");
            channel.queueBind("queue6", EXCHANGE_NAME, "order");
            channel.queueBind("queue7", EXCHANGE_NAME, "course");
            // 5. 準(zhǔn)備要發(fā)送的消息
            String message = "你好，學(xué)相伴：www.kuangstudy.com";
            // 6. 向交換機(jī)發(fā)送消息，使用路由鍵 "course"
            channel.basicPublish(EXCHANGE_NAME, "course", null, message.getBytes("UTF-8"));
            System.out.println("消息發(fā)送成功！");
        } catch (Exception ex) {
            // 捕獲異常并打印堆棧信息
            ex.printStackTrace();
            System.out.println("消息發(fā)送出現(xiàn)異常...");
        } finally {
            // 在try-with-resources中，不再需要顯式關(guān)閉連接和通道
            // 會(huì)自動(dòng)關(guān)閉連接和通道
        }
    }
}

import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;
import com.rabbitmq.client.DeliverCallback;
public class RabbitMQConsumer {
    private final static String QUEUE_NAME = "queue7"; // 與生產(chǎn)者的綁定一致
    private final static String EXCHANGE_NAME = "direct_message_exchange";
    private final static String EXCHANGE_TYPE = "direct";
    public static void main(String[] args) {
        // 1. 創(chuàng)建連接工廠，設(shè)置連接參數(shù)
        ConnectionFactory connectionFactory = new ConnectionFactory();
        connectionFactory.setHost("localhost");
        connectionFactory.setPort(5672); // RabbitMQ默認(rèn)端口
        connectionFactory.setUsername("guest");
        connectionFactory.setPassword("guest");
        try (Connection connection = connectionFactory.newConnection();
             Channel channel = connection.createChannel()) {
            // 2. 聲明交換機(jī)和隊(duì)列，與生產(chǎn)者保持一致
            channel.exchangeDeclare(EXCHANGE_NAME, EXCHANGE_TYPE, true);
            channel.queueDeclare(QUEUE_NAME, true, false, false, null);
            // 3. 綁定隊(duì)列到交換機(jī)，路由鍵為"course"
            channel.queueBind(QUEUE_NAME, EXCHANGE_NAME, "course");
            System.out.println(" [*] 等待接收消息...");
            // 4. 定義接收消息的回調(diào)函數(shù)
            DeliverCallback deliverCallback = (consumerTag, delivery) -> {
                String message = new String(delivery.getBody(), "UTF-8");
                System.out.println(" [x] 接收到的消息: '" + message + "'");
                // 這里可以添加進(jìn)一步的消息處理邏輯
            };
            // 5. 開始消費(fèi)消息 (自動(dòng)應(yīng)答)
            channel.basicConsume(QUEUE_NAME, true, deliverCallback, consumerTag -> { });
        } catch (Exception ex) {
            // 捕獲異常并打印堆棧信息
            ex.printStackTrace();
            System.out.println("消費(fèi)者運(yùn)行中出現(xiàn)異常...");
        }
    }
}