Regex 字符和数字至少出现一次_Regex

Regex 字符和数字至少出现一次

regex

Regex 字符和数字至少出现一次,regex,Regex,我希望下面的正则表达式可以匹配字符串“A34CVDREREEVBF98F04389” 但是，我发现正则表达式也可以匹配以下字符串 000001111122222333334 #The string doesn't include a character. AbstractAlgebraTheory #The string doesn't include a digit. 它是否有办法确保字符和数字在字符串中至少出现一次？使用前瞻 \b(?=.*\d)(?=.*[a-zA-

我希望下面的正则表达式可以匹配字符串“A34CVDREREEVBF98F04389”

但是，我发现正则表达式也可以匹配以下字符串

  000001111122222333334 
  #The string doesn't include a character.

  AbstractAlgebraTheory 
  #The string doesn't include a digit.

它是否有办法确保字符和数字在字符串中至少出现一次？

使用前瞻

\b(?=.*\d)(?=.*[a-zA-Z])[0-9a-zA-Z]{21}\b

如有必要，添加锚固件

^(?=.*\d)(?=.*[a-zA-Z])[0-9a-zA-Z]{21}$

^(?=.*\d)(?=.*[a-zA-Z])[0-9a-zA-Z]{21}$