Java RabbitMQ -如何在主题交换中切换关键字？

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

public class TopicExchangeExample {
    private static final String EXCHANGE_NAME = "topic_exchange";
    private static final String ROUTING_KEY = "topic.key";

    public static void main(String[] args) throws Exception {
        // 创建连接工厂
        ConnectionFactory factory = new ConnectionFactory();
        factory.setHost("localhost");

        // 创建连接
        Connection connection = factory.newConnection();

        // 创建通道
        Channel channel = connection.createChannel();

        // 声明交换机
        channel.exchangeDeclare(EXCHANGE_NAME, "topic");

        // 发布消息
        String message = "Hello, RabbitMQ!";
        channel.basicPublish(EXCHANGE_NAME, ROUTING_KEY, null, message.getBytes("UTF-8"));
        System.out.println("Sent message: " + message);

        // 关闭通道和连接
        channel.close();
        connection.close();
    }
}