参考:[https://stackoverflow.com/a/24214538/1484621](https://link.segmentfault.com/?enc=sgn%2FNx2ZNDWDQEi%2F1zoEBg%3D%3D.1ZoZWQ%2Fjsa%2BqsAH6uY8AtadcSdkN4VZrK%2B7b2JSa7qGWzC2QWn7n0%2FxjxKZL%2BPMw) 大体上是: 浏览器会发送前会对 cookie 按路径长短排序,长的在前,但规范 [RFC6265](https://link.segmentfault.com/?enc=%2BTOiuEpi7p%2Be%2B51WFbVFEA%3D%3D.yYU%2BZzsVW8WFzFhaSM1hkaJg4D%2B01ONZJHRyo8XPhwx%2BU8tvz6xkDgbhyWyrwiDS) 同时说明服务端不应依赖这个顺序。