@StreamListener("logisticsInput") public void consumeLogisticsMessage(@Payload Object payload){ log.info("receive and consume logistics message:[]",payload.toString()); LogisticsMessage logisticsMessage = JSON.parseObject(payload.toString(), LogisticsMessage.class); EcommerceLogistics ecommerceLogistics = ecommerceLogisticsDao.save( new EcommerceLogistics( logisticsMessage.getUserId(), logisticsMessage.getOrderId(), logisticsMessage.getAddressId(), logisticsMessage.getExtraInfo() ) ); log.info("consume logistics message success:[{}]",ecommerceLogistics.getId()); }这段代码什么意思
时间: 2024-02-15 12:29:01 浏览: 60
这段代码是一个Spring Cloud Stream框架的消息消费者方法,使用@StreamListener注解来监听名为"logisticsInput"的消息通道。当有消息进入该通道时,会自动调用该方法进行消费。具体解释如下:
1. `@StreamListener("logisticsInput")`:将该方法标记为"logisticsInput"通道的消息监听器。
2. `public void consumeLogisticsMessage(@Payload Object payload)`:方法名为consumeLogisticsMessage,接收一个@Payload注解标记的Object类型参数payload,表示消息的负载(即消息体)。
3. `log.info("receive and consume logistics message:[]",payload.toString())`:使用log.info方法打印日志信息,表示接收并消费了一条物流消息,中括号里面是消息体。
4. `LogisticsMessage logisticsMessage = JSON.parseObject(payload.toString(), LogisticsMessage.class)`:将消息体payload转换为LogisticsMessage对象。
5. `EcommerceLogistics ecommerceLogistics = ecommerceLogisticsDao.save(...)`:将LogisticsMessage对象的属性存储到数据库中,返回一个EcommerceLogistics对象。
6. `log.info("consume logistics message success:[{}]",ecommerceLogistics.getId())`:使用log.info方法打印日志信息,表示消费物流消息成功,并输出EcommerceLogistics对象的ID。
总的来说,这段代码是一个消息消费者,用于接收并消费物流消息,将消息体转换为LogisticsMessage对象,并将对象的属性存储到数据库中。
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