两个配置项都属于 ngx_http_core_module

 

alias 例子

location /baidu {
      alias /opt/static/baidu;
}

访问 /baidu/xxx.html 实际访问的是 /opt/static/baidu/xxx.html

 

root 例子

location /baidu {
      root /opt/static;
}

访问 /baidu/xxx.html 实际访问的是 /opt/static/baidu/xxx.html

 

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https://nginx.org/en/docs/http/ngx_http_core_module.html#root

https://nginx.org/en/docs/http/ngx_http_core_module.html#alias