《Open Zipkin Brave》中的逻辑是这样的：

/**Instruments an existing {@linkplain RabbitTemplate} */
  public RabbitTemplate decorateRabbitTemplate(RabbitTemplate rabbitTemplate) {
    MessagePostProcessor[] beforePublishPostProcessors =
      appendTracingMessagePostProcessor(rabbitTemplate, beforePublishPostProcessorsField);
    if (beforePublishPostProcessors != null) {
      rabbitTemplate.setBeforePublishPostProcessors(beforePublishPostProcessors);
    }
    return rabbitTemplate;
  }

由于它是无条件的，我建议您为setBeforePublishPostProcessors()方法覆盖RabbitTemplate，并使其主体为空，或者在传播到super之前删除TracingMessagePostProcessor。

我使用RabbitTemplate.addBeforePublishPostProcessors从消息属性头中删除头b3

@Autowired
public void removeTraceProcessor(RabbitTemplate noTraceRabbitTemplate) {
    noTraceRabbitTemplate.addBeforePublishPostProcessors(
        message -> {
            message.getMessageProperties().getHeaders().remove("b3");
            return message;
        }
    );
}

来自@Artem-Bilan的第二个解决方案

@Bean
public RabbitTemplate noTraceRabbitTemplate(ConnectionFactory connFactoryLocal) {
    return new RabbitTemplate(connFactoryLocal) {
        @Override
        public void setBeforePublishPostProcessors(MessagePostProcessor... beforePublishPostProcessors) {
            super.setBeforePublishPostProcessors(
                Arrays.stream(beforePublishPostProcessors)
                .filter(p -> !p.getClass().getSimpleName().equals("TracingMessagePostProcessor"))
                .toArray(MessagePostProcessor[]::new)
            );
        }
    };
}