RabbitMQ未确认消息处理

需要注意的是，两个回调处理的均为当前该回调的处理范围，成功的处理成功的，失败的处理失败的。实际如何用，可参考尚硅谷P37​​尚硅谷2021新版RabbitMQ教程丨快速掌握MQ消息中间件_哔哩哔哩_bilibili​​

SortedSet<Long> confirmSet = Collections.synchronizedSortedSet(new TreeSet<Long>());
  channel.confirmSelect();
         channel.addConfirmListener(new ConfirmListener() {
             public void handleAck(long deliveryTag, boolean multiple) throws IOException {
                 if (multiple) {
                     confirmSet.headSet(deliveryTag + 1).clear();
                 } else {
                     confirmSet.remove(deliveryTag);
                 }
             }
             public void handleNack(long deliveryTag, boolean multiple) throws IOException {
                 System.out.println("Nack, SeqNo: " + deliveryTag + ", multiple: " + multiple);
                 if (multiple) {
                     confirmSet.headSet(deliveryTag + 1).clear();
                 } else {
                     confirmSet.remove(deliveryTag);
                 }
             }
         });        while (true) {
             long nextSeqNo = channel.getNextPublishSeqNo();
             channel.basicPublish(ConfirmConfig.exchangeName, ConfirmConfig.routingKey, MessageProperties.PERSISTENT_TEXT_PLAIN, ConfirmConfig.msg_10B.getBytes());
             confirmSet.add(nextSeqNo);
         }