channel error; protocol method:

根据引用和引用的信息，报错信息"channel error; protocol method: #method(channel.close)(reply-code=406, reply-text=PRECONDITION_FAILED - unknown delivery tag 1, class-id=60, method-id=80)"表示在使用RabbitTemplate操作消息队列时发生了通道错误。这个错误可能是由于未知的投递标签或者无法满足预设条件导致的。根据引用的信息，当使用@RabbitListener注解时，会自动进行ACK确认，如果在方法中再次手动ACK确认，会导致重复ACK而出错。为了解决这个问题，可以在@RabbitListener注解中添加ackMode = "MANUAL"参数，来手动配置ACK模式。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
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