RabbitMQ的事务机制

最新推荐文章于 2025-10-28 17:29:48 发布

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本文详细介绍了RabbitMQ中基于AMQP协议的事务机制，包括txSelect用于开启事务，txCommit用于提交，txRollback用于回滚事务。同时，提供了生产者和消费者端的代码示例来阐述如何在实际应用中操作事务。

RabbitMQ基于AMQP协议。该协议实现了事务机制。其事务主要由三部分组成

txSelect:用户将当前的channel设置为transaction模式

txCommit：用于提交事务

txRollback：用于回滚事务

生产者代码演示

public class TxSend {
    private static final String QUEUE_NAME = "test_queue_tx";
    public static void main(String[] args) throws IOException, TimeoutException {
        Connection connection = ConnectionUtils.getConnection();
        Channel channel = connection.createChannel();
        channel.queueDeclare(QUEUE_NAME, false, false, false, null);

        String msg = "hello tx message!";

        try {
            channel.txSelect();
            channel.basicPublish("", QUEUE_NAME, null, msg.getBytes());
            // 出错测试
            int xx = 1 / 0;
            System.out.println("send: " + msg);
            channel.txCommit();
        } catch (Exception e) {
            channel.txRollback();
            System.out.println("send message rollback.");
        }

        channel.close();
        connection.close();
    }
}

消费者代码演示

public class TxRecv {
    private static final String QUEUE_NAME = "test_queue_tx";
    public static void main(String[] args) throws IOException, TimeoutException {
        Connection connection = ConnectionUtils.getConnection();
        Channel channel = connection.createChannel();
        channel.queueDeclare(QUEUE_NAME, false, false, false, null);

        channel.basicConsume(QUEUE_NAME, true, new DefaultConsumer(channel){
            @Override
            public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties, byte[] body) throws IOException {
                System.out.println("recv[tx] msg: " + new String(body, "utf-8"));
            }
        });
    }
}