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我尝试构建持续消息队列,每个消息都有一些延迟。在Java代码它看起来像这样:RabbitMQ中的消息丢失
ConnectionFactory factory = new ConnectionFactory();
factory.setHost("localhost");
Connection connection = factory.newConnection();
Channel channel = connection.createChannel();
channel.exchangeDeclare("WorkExchange", "direct");
channel.queueDeclare("WorkQueue", true, false, false, null);
channel.queueBind("WorkQueue", "WorkExchange", "");
Map<String, Object> args = new HashMap<>();
args.put("x-dead-letter-exchange", "WorkExchange");
channel.exchangeDeclare("RetryExchange", "direct");
channel.queueDeclare("RetryQueue", true, false, false, args);
channel.queueBind("RetryQueue", "RetryExchange", "");
channel.confirmSelect();
BasicProperties properties = new BasicProperties();
properties.setDeliveryMode(2);
properties.setExpiration("120000");
channel.basicPublish("RetryExchange", "", properties, "Hello world!".getBytes());
channel.waitForConfirmsOrDie();
connection.close();
但是,我有一些持久性的问题。当我停止服务器时,等待一段时间并重新启动它,必须移动到WorkQueue的消息才会消失。我做错了什么?或者它是由设计?