For more detail, see Routing and action Selection, which describes exactly how the framework matches a URI to a route, selects a controller, and then selects the action to invoke.
更多细节参见“路由与动作选择”(本教程系列的下一小节—译者注)，它精确地描述了框架如何把URI匹配到路由、如何选择控制器、以及随后选择动作进行调用。
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