SMILET
您最好对/进行拆分，然后测试所有单个部分。但是，如果您真的想使用正则表达式，可以尝试以下一种：#\A(?:(?:(?:(?:0?[13578])|(1[02]))/31/(19|20)?\d\d)|(?:(?:(?:0?[13-9])|(?:1[0-2]))/(?:29|30)/(?:19|20)?\d\d)|(?:0?2/29/(?:19|20)(?:(?:[02468][048])|(?:[13579][26])))|(?:(?:(?:0?[1-9])|(?:1[0-2]))/(?:(?:0?[1-9])|(?:1\d)|(?:2[0-8]))/(?:19|20)?\d\d))\Z#说明：\A # start of string (?: # group without capture # that match 31st of month 1,3,5,7,8,10,12 (?: # group without capture (?: # group without capture (?: # group without capture 0? # number 0 optionnal [13578] # one digit either 1,3,5,7 or 8 ) # end group | # alternative (1[02]) # 1 followed by 0 or 2 ) # end group / # slash 31 # number 31 / # slash (19|20)? #numbers 19 or 20 optionnal \d\d # 2 digits from 00 to 99 ) # end group| (?:(?:(?:0?[13-9])|(?:1[0-2]))/(?:29|30)/(?:19|20)?\d\d)| (?:0?2/29/(?:19|20)(?:(?:[02468][048])|(?:[13579][26])))| (?:(?:(?:0?[1-9])|(?:1[0-2]))/(?:(?:0?[1-9])|(?:1\d)|(?:2[0-8]))/(?:19|20)?\d\d) )\Z我已经解释了第一部分，其余部分留作练习。此匹配一个无效日期：02/29/1900，但对于01/01/1900到12/31/2099之间的任何其他日期都是正确的