Symfony 中的子请求有什么用途？ - V2EX

Symfony 中的子请求有什么用途？ - V2EX

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这是一个创建于 3386 天前的主题，其中的信息可能已经有所发展或是发生改变。

看 Symfony 框架，发现 HttpKernel 分了 MASTER_REQUEST 和 SUB_REQUEST ，而且 kernel 做 handle() 时还有个请求栈 requestStack ，一个 url 不是对应一个 Request 请求嘛，为什么还有子请求这个概念？是程序内发出的请求？这个子请求的应用场景是怎样的？主要是为了解决什么问题啊？

求解！

2 条回复 2016-08-25 10:06:17 +08:00

1

ZYWJ

2016-08-24 16:23:26 +08:00

1

看了这边，你就懂了。 http://symfony.com/doc/current/components/http_kernel.html

2

likezun

2016-08-25 10:06:17 +08:00

1

我觉得核心就是：
The only difference internally is that some listeners (e.g. security) may only act upon the master request. Each listener is passed some sub-class of KernelEvent, whose isMasterRequest() can be used to check if the current request is a "master" or "sub" request.

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