location 的匹配规则

空格：默认匹配，普通匹配

location / {
   root /home;
}

=：精确匹配

location = /imooc/img/face1.png {
  root /home;
}

~*：匹配正则表达式，不区分大小写

#符合图片的显示
location ~* .(GIF|jpg|png|jpeg) {
  root /home;
}

~：匹配正则表达式，区分大小写

#GIF必须大写才能匹配到
location ~ .(GIF|jpg|png|jpeg) {
  root /home;
}

^~：以某个字符路径开头

location ^~ /imooc/img {
  root /home;
}