nginx位置正则表达式-字符类和匹配范围

Question

我正在尝试为路径/s/<4-6 character string here>设置一个正则表达式，其中我将4-6字符串捕获为$1。

我尝试使用以下两个条目，但都失败了

location ~ ^/s/([0-9a-zA-Z]){4,6}+$ { ...

location ~ ^/s/([0-9a-zA-Z]{4,6})+$ { ...

第一种是“未知指令”，第二种是“pcre_compile() failed:缺失”。

编辑

该地点将提供下列路线：

/s/1234 (and I would capture '1234' in $1)
/s/12345 (and I would capture '12345' in $1)
/s/123456 (and I would capture '123456' in $1)
/s/abcd (and I would capture 'abcd' in $1)
/s/abcde (and I would capture 'abcde' in $1)
/s/abcdef (and I would capture 'abcdef' in $1)
/s/a1b2c (and I would capture 'a1b2c' in $1)

该地点将不提供下列路线：

/s/1
/s/12
/s/123
/s/a
/s/ab
/s/abc
/s/abc1234
/s/12345678

等等。

Answer 1

如果您想捕获4到6个字符，为什么没有在捕获括号中添加量词呢？

也许是这样的：

location ~ "^/s/([0-9a-zA-Z]{4,6})$" {...

大括号用于regex和块控制，必须用引号(单引号或双引号)括起来(<- wiki nginx)。