正则表达式以验证密码 [英] Regex to validate password

问题描述

我在这里一直在寻找一些想法，但我似乎仍在努力提出正则表达式来满足我的要求.

I've looked on here for some ideas but I still seem to be struggling with coming up with a regular expression to meet my requirements.

我需要一个正则表达式来检查密码格式，条件是:

I need a regular expression to check a password format, the criteria are:

• 至少1个大写字母
• 至少1个数字
• 仅字母数字字符(无特殊字符)
• 至少8个字符长

我使用的正则表达式是:

The regular expression I'm using is:

^(?=.*[a-z])(?=.*[A-Z])(?=.*\d).{8,}$

但是，这也允许使用!$&这样的字符.

However this is also allowing characters like !$&.

我需要对此进行修改以使其停止接受这些特殊字符吗?

Is there a modification I need to make to this to get it to stop these special characters being accepted?

推荐答案

将最后一个部分.{8,}更改为[a-zA-Z\d]{8,}

Change the last part .{8,} to [a-zA-Z\d]{8,}

 ^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)[a-zA-Z\d]{8,}$

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