Rabbit发送消息，消费者消费异常
背景：
在步骤1下创建订单，步骤2下提交消息
@Transactionalpublic void tradeHandler(Map map) {
// 1.生成统一订单
var unifyOrder = orderService.create(orderService.getUnifyOrderDTO(fee, alipayOrder));
//2.充值通知+首充赠送礼
rabbitTemplate.convertAndSend(ChargeQueueConfig.EXCHANGE_NAME, ChargeQueueConfig.QUEUE_NAME, unifyOrder.getId());
}
原因：事务导致数据未提交，消费者监听到消息，使用订单ID查询订单失败
解决：直接提交unifyOrder对象，消费者直接使用创建的order
（注意：如果在received 中还像第一版直接转自定义对象，消息进程会报错）
解决方案是使用Jackson2JsonMessageConverter 。在发送消息时，它会先将自定义的消息类序列化成json格式，再转成byte构造 Message
//发送 设置Converter@Beanpublic RabbitTemplate rabbitTemplate(ConnectionFactory connectionFactory) {RabbitTemplate template = new RabbitTemplate(connectionFactory);template.setMessageConverter(new Jackson2JsonMessageConverter());return template;}@Beanpublic SimpleRabbitListenerContainerFactory rabbitListenerContainerFactory(ConnectionFactory connectionFactory) {SimpleRabbitListenerContainerFactory factory = new SimpleRabbitListenerContainerFactory();factory.setConnectionFactory(connectionFactory);factory.setMessageConverter(new Jackson2JsonMessageConverter());return factory;}//消费时 指定Converter@RabbitListener(bindings = {@QueueBinding(value = @Queue(value = "queue-order"),exchange = @Exchange(value = "exchange-order"),key = "rkey-order")},containerFactory="rabbitListenerContainerFactory")
参考：https://www.cnblogs.com/timseng/p/11688019.html
