用于密码验证的正则表达式

Question

我正在寻找一个正则表达式来验证以下密码：

• 密码必须至少包含7个字符，最多50个字符

• 密码必须包含以下四个类别中至少三个的字符：

  1. 英文大写字母字符（A-Z）
  2. 英文小写字母字符（a-z）
  3. 基数为10位（0-9）
  4. 非字母数字字符（例如，！$＃，％）

我的尝试如下：

position:absolute bottom:0;

这不会检查特殊字符，我也不知道如何使密码必须包含以下四个类别中至少三个的字符。

任何人都可以帮助建议正则表达式来验证此密码策略吗？

Answer 1

描述

^(?:(?=.*?[A-Z])(?:(?=.*?[0-9])(?=.*?[-!@#$%^&*()_[\]{},.<>+=])|(?=.*?[a-z])(?:(?=.*?[0-9])|(?=.*?[-!@#$%^&*()_[\]{},.<>+=])))|(?=.*?[a-z])(?=.*?[0-9])(?=.*?[-!@#$%^&*()_[\]{},.<>+=]))[A-Za-z0-9!@#$%^&*()_[\]{},.<>+=-]{7,50}$

要更好地查看图像，您可以右键单击图像并在新窗口中选择视图。

此正则表达式将执行以下操作

• 要求字符串长度为7 - 50个字符
• 允许字符串包含A-Z，a-z，0-9和!@#$%^&*()_[\]{},.<>+=-字符
• 在以下任何三种情况下至少需要一个字符
  1. 英文大写字母字符A–Z
  2. 英文小写字母字符a–z
  3. 基数10位0–9
  4. 非字母数字字符!@#$%^&*()_[]{},.<>+=-

实施例

现场演示

https://regex101.com/r/jR9cC7/1

示例文字

         1         2         3         4         5        6
12345678901234567890123456789012345678901234567890124567890
aaaaAAAA1111
aaaaBBBBBBB
AAAAaaaa__
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa!A
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa!
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa!A
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa!AA

允许使用字符串

aaaaAAAA1111
AAAAaaaa__
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa!A

解释

NODE                     EXPLANATION
----------------------------------------------------------------------
  ^                        the beginning of a "line"
----------------------------------------------------------------------
  (?:                      group, but do not capture:
----------------------------------------------------------------------
    (?=                      look ahead to see if there is:
----------------------------------------------------------------------
      .*?                      any character except \n (0 or more
                               times (matching the least amount
                               possible))
----------------------------------------------------------------------
      [A-Z]                    any character of: 'A' to 'Z'
----------------------------------------------------------------------
    )                        end of look-ahead
----------------------------------------------------------------------
    (?:                      group, but do not capture:
----------------------------------------------------------------------
      (?=                      look ahead to see if there is:
----------------------------------------------------------------------
        .*?                      any character except \n (0 or more
                                 times (matching the least amount
                                 possible))
----------------------------------------------------------------------
        [0-9]                    any character of: '0' to '9'
----------------------------------------------------------------------
      )                        end of look-ahead
----------------------------------------------------------------------
      (?=                      look ahead to see if there is:
----------------------------------------------------------------------
        .*?                      any character except \n (0 or more
                                 times (matching the least amount
                                 possible))
----------------------------------------------------------------------
        [-                       any character of: '-', '!', '@',
        !@#$%^&*()_[\]           '#', '$', '%', '^', '&', '*', '(',
        {},.<>+=]                ')', '_', '[', '\]', '{', '}', ',',
                                 '.', '<', '>', '+', '='
----------------------------------------------------------------------
      )                        end of look-ahead
----------------------------------------------------------------------
     |                        OR
----------------------------------------------------------------------
      (?=                      look ahead to see if there is:
----------------------------------------------------------------------
        .*?                      any character except \n (0 or more
                                 times (matching the least amount
                                 possible))
----------------------------------------------------------------------
        [a-z]                    any character of: 'a' to 'z'
----------------------------------------------------------------------
      )                        end of look-ahead
----------------------------------------------------------------------
      (?:                      group, but do not capture:
----------------------------------------------------------------------
        (?=                      look ahead to see if there is:
----------------------------------------------------------------------
          .*?                      any character except \n (0 or more
                                   times (matching the least amount
                                   possible))
----------------------------------------------------------------------
          [0-9]                    any character of: '0' to '9'
----------------------------------------------------------------------
        )                        end of look-ahead
----------------------------------------------------------------------
       |                        OR
----------------------------------------------------------------------
        (?=                      look ahead to see if there is:
----------------------------------------------------------------------
          .*?                      any character except \n (0 or more
                                   times (matching the least amount
                                   possible))
----------------------------------------------------------------------
          [-                       any character of: '-', '!', '@',
          !@#$%^&*()_[             '#', '$', '%', '^', '&', '*', '(',
          \]{},.<>+=]              ')', '_', '[', '\]', '{', '}',
                                   ',', '.', '<', '>', '+', '='
----------------------------------------------------------------------
        )                        end of look-ahead
----------------------------------------------------------------------
      )                        end of grouping
----------------------------------------------------------------------
    )                        end of grouping
----------------------------------------------------------------------
   |                        OR
----------------------------------------------------------------------
    (?=                      look ahead to see if there is:
----------------------------------------------------------------------
      .*?                      any character except \n (0 or more
                               times (matching the least amount
                               possible))
----------------------------------------------------------------------
      [a-z]                    any character of: 'a' to 'z'
----------------------------------------------------------------------
    )                        end of look-ahead
----------------------------------------------------------------------
    (?=                      look ahead to see if there is:
----------------------------------------------------------------------
      .*?                      any character except \n (0 or more
                               times (matching the least amount
                               possible))
----------------------------------------------------------------------
      [0-9]                    any character of: '0' to '9'
----------------------------------------------------------------------
    )                        end of look-ahead
----------------------------------------------------------------------
    (?=                      look ahead to see if there is:
----------------------------------------------------------------------
      .*?                      any character except \n (0 or more
                               times (matching the least amount
                               possible))
----------------------------------------------------------------------
      [-                       any character of: '-', '!', '@', '#',
      !@#$%^&*()_[\]{}         '$', '%', '^', '&', '*', '(', ')',
      ,.<>+=]                  '_', '[', '\]', '{', '}', ',', '.',
                               '<', '>', '+', '='
----------------------------------------------------------------------
    )                        end of look-ahead
----------------------------------------------------------------------
  )                        end of grouping
----------------------------------------------------------------------
  [A-Za-z0-                any character of: 'A' to 'Z', 'a' to 'z',
  9!@#$%^&*()_[\]{},.<     '0' to '9', '!', '@', '#', '$', '%', '^',
  >+=-]{7,50}              '&', '*', '(', ')', '_', '[', '\]', '{',
                           '}', ',', '.', '<', '>', '+', '=', '-'
                           (between 7 and 50 times (matching the most
                           amount possible))
----------------------------------------------------------------------
  $                        before an optional \n, and the end of a
                           "line"
----------------------------------------------------------------------

Answer 2

为了在一个正则表达式中添加多个条件，我们使用管道或括号 /（regex1）|（regex2）|（regex2）/或（regex1）（regex2）

每个正则表达式条件都非常基本，并且您提出的每个条件都有很多示例。

你可以看看这里：

Regex for Password Must be contain at least 8 characters, least 1 number and both lower and uppercase letters and special characters