《RabbitMQ》如何保证消息不被重复消费

@Component
@Slf4J
public class SendMessage {
    @Autowired
    private MessageService messageService;
    @Autowired
    private RabbitTemplate rabbitTemplate;
    // 最大投递次数
    private static final int MAX_TRY_COUNT = 3;
    /**
     * 每30s拉取投递失败的消息, 重新投递
     */
    @Scheduled(cron = "0/30 * * * * ?")
    public void resend() {
        log.info("开始执行定时任务(重新投递消息)");
        List<MsgLog> msgLogs = messageService.selectTimeoutMsg();
        msgLogs.forEach(msgLog -> {
            String msgId = msgLog.getMsgId();
            if (msgLog.getTryCount() >= MAX_TRY_COUNT) {
                messageService.updateStatus(msgId, Constant.MsgLogStatus.DELIVER_FAIL);
                log.info("超过最大重试次数, 消息投递失败, msgId: {}", msgId);
            } else {
                messageService.updateTryCount(msgId, msgLog.getNextTryTime());// 投递次数+1
                CorrelationData correlationData = new CorrelationData(msgId);
                rabbitTemplate.convertAndSend(msgLog.getExchange(), msgLog.getRoutingKey(), MessageHelper.objToMsg(msgLog.getMsg()), correlationData);// 重新投递
                log.info("第 " + (msgLog.getTryCount() + 1) + " 次重新投递消息");
            }
        });
        log.info("定时任务执行结束(重新投递消息)");
    }
}

@RabbitListener(queuesToDeclare = @Queue(value = "javatrip", durable = "true"))
public void receive(String message, @Headers Map<String,Object> headers, Channel channel) throws Exception{
    System.out.println("重试"+System.currentTimeMillis());
    System.out.println(message);
    int i = 1 / 0;
}

spring:
  rabbitmq:
    listener:
      simple:
        retry:
          enabled: true # 开启消费者进行重试
          max-attempts: 5 # 最大重试次数
          initial-interval: 3000 # 重试时间间隔

@PostMapping("/send")
public void sendMessage(){
    JSONObject jsonObject = new JSONObject();
    jsonObject.put("message","Java旅途");
    String json = jsonObject.toJSONString();
    Message message = MessageBuilder.withBody(json.getBytes()).setContentType(MessageProperties.CONTENT_TYPE_JSON).setContentEncoding("UTF-8").setMessageId(UUID.randomUUID()+"").build();
    amqpTemplate.convertAndSend("javatrip",message);
}

@Component
@RabbitListener(queuesToDeclare = @Queue(value = "javatrip", durable = "true"))
public class Consumer {
    @RabbitHandler
    public void receiveMessage(Message message) throws Exception {
        Jedis jedis = new Jedis("localhost", 6379);
        String messageId = message.getMessageProperties().getMessageId();
        String msg = new String(message.getBody(),"UTF-8");
        System.out.println("接收到的消息为："+msg+"==消息id为："+messageId);
        String messageIdRedis = jedis.get("messageId");
        if(messageId == messageIdRedis){
            return;
        }
        JSONObject jsonObject = JSONObject.parseObject(msg);
        String email = jsonObject.getString("message");
        jedis.set("messageId",messageId);
    }
}