Java编程rabbitMQ实现消息的收发

以下是Java编程RabbitMQ实现消息的收发的完整攻略，包含两个示例说明。

示例1：发送消息

步骤1：添加依赖

在使用Java编程实现RabbitMQ时，您需要添加以下依赖：

<dependency>
    <groupId>com.rabbitmq</groupId>
    <artifactId>amqp-client</artifactId>
    <version>5.12.0</version>
</dependency>

步骤2：创建连接

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

public class Sender {
    private final static String QUEUE_NAME = "hello";

    public static void main(String[] argv) throws Exception {
        ConnectionFactory factory = new ConnectionFactory();
        factory.setHost("localhost");
        try (Connection connection = factory.newConnection();
             Channel channel = connection.createChannel()) {
            channel.queueDeclare(QUEUE_NAME, false, false, false, null);
            String message = "Hello World!";
            channel.basicPublish("", QUEUE_NAME, null, message.getBytes());
            System.out.println("Sent message: " + message);
        }
    }
}

步骤3：运行程序

运行程序后，您将看到以下输出：

Sent message: Hello World!

示例2：接收消息

步骤1：添加依赖

同示例1。

步骤2：创建连接

import com.rabbitmq.client.*;

import java.io.IOException;

public class Receiver {
    private final static String QUEUE_NAME = "hello";

    public static void main(String[] argv) throws Exception {
        ConnectionFactory factory = new ConnectionFactory();
        factory.setHost("localhost");
        Connection connection = factory.newConnection();
        Channel channel = connection.createChannel();
        channel.queueDeclare(QUEUE_NAME, false, false, false, null);
        System.out.println("Waiting for messages...");

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

步骤3：运行程序

运行程序后，您将看到以下输出：

Waiting for messages...
Received message: Hello World!

以上就是Java编程RabbitMQ实现消息的收发的完整攻略，包含两个示例说明。