RabbitMQ接收端配置及实现方法

RabbitMQ接收端
1，application.yml的配置

  #MQ消息队列
  rabbitmq:
 #   消息确认（ACK）
#    publisher-/confirm/i-type: correlated #确认消息已发送到交换机(Exchange)，会返回一个ack确认码
#    publisher-returns: true #确认消息已发送到队列(Queue)
    listener: #加了2下面2个属性,消费消息的时候,就必须发送ack确认,不然消息永远还在队列中
      direct:
        acknowledge-mode: manual
        retry: # 是否启用发布重试
          enabled: true
      simple:
        acknowledge-mode: manual
        concurrency: 5
        max-concurrency: 10
        retry:
          enabled: true

2，实现类

@Slf4j
@Component()
public class BctDataReceiver {
  // 存放接收处理失败的消息次数
    private static ConcurrentMap concurrentMap = new ConcurrentHashMap<>();
    @RabbitListener(bindings = {
            @QueueBinding(
                    value = @Queue(value = "SWAP_REGULATION_QUEUE", durable = "true"),
                    exchange = @Exchange(value = "SWAP_REGULATION"),
                    key = "swap.regulation")
    })
public void handleSwap(Message message, Channel channel) throws IOException, InterruptedException {
       // 接受JSON形式的mq
       String json = JsonUtils.mapper.readValue(message.getBody(), String.class);
        User user= JsonUtils.mapper.readValue(json, User.class);
         log.info("bctDataDTO:{}", user.toString());

       //mq重复失败问题处理
        if (concurrentMap.containsKey(user.getName())) {
            Integer value = concurrentMap.get(user.getName());
            if (value <= 5) {
                //log.error("消息已重复处理失败,拒绝再次接收...");
           //channel.basicReject(message.getMessageProperties().getDeliveryTag(), false);
                concurrentMap.put(user.getName(), ++value);
                log.error("消息已重复处理失败{}次,睡眠60s再次返回队列...", value);
                TimeUnit.SECONDS.sleep(60);
                log.info("60s睡眠结束");
                // 重新放入队列
                channel.basicNack(message.getMessageProperties().getDeliveryTag(), false, true);
                return;
            } else {
                concurrentMap.remove(user.getName());
            }
        }

try{
  // mq接收数据的处理逻辑
  .............
}catch (Exception e) {
            e.printStackTrace();
            log.error(e.getMessage());
            // 拒绝确认接收
            concurrentMap.putIfAbsent(user.getName(), 1);
            channel.basicNack(message.getMessageProperties().getDeliveryTag(), false, true);
            log.error("消息失败即将再次返回队列处理...");
      }
      
    }
}