nginx try_files用法 及Nginx location的一些配置

location / {
try_files $uri $uri/ /?$args;
}

try_files 指令的官方介绍比较让人摸不着头脑，经网上一番总结查看，try_files最核心的功能是可以替代rewrite。

try_files

语法: try_files file ... uri 或 try_files file ... = code

默认值: 无

作用域: server location

Checks for the existence of files in order, and returns the first file that is found. A trailing slash indicates a directory - $uri /. In the event that no file is found, an internal redirect to the last parameter is invoked. Do note that only the last parameter causes an internal redirect,

former ones just sets the internal URI pointer. The last parameter is the fallback URI and *must* exist, or else an internal error will be raised. Named locations can be used. Unlike with rewrite, $args are not automatically preserved if the fallback is not a named location. If you need args preserved, you must do so explicitly:

location  = / {
  # 只匹配"/".
  [ configuration A ] 
}
location  / {
  # 匹配任何请求，因为所有请求都是以"/"开始
  # 但是更长字符匹配或者正则表达式匹配会优先匹配
  [ configuration B ] 
}
location ^~ /images/ {
  # 匹配任何以 /images/ 开始的请求，并停止匹配 其它location
  [ configuration C ] 
}
location ~* \.(gif|jpg|jpeg)$ {
  # 匹配以 gif, jpg, or jpeg结尾的请求. 
  # 但是所有 /images/ 目录的请求将由 [Configuration C]处理.   
  [ configuration D ] 
}

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