正则表达式：匹配某些字符但不允许空格
我有这个正则表达式：
(.*^(?=.{16,25}$)(?=.*[a-z]{1,})(?=.*[A-Z]{1,})(?=.*[0-9]{1,})(?=.*\W{1,8}).*$)
匹配密码（字符串）：
- 16-25长度
- 1到多个a-z
- 1到多个A-Z
- 1 to many 0-9
- 1到多个符号
但我不想\s，我也不知道如何把它放在正则表达式中。
有什么建议吗？
我将原始限制字符{1,8}编辑为{1，}
2 个答案:
答案 0 :(得分：2)
描述
^(?=(?:[^a-z]*?[a-z]){1,8}(?!.*?[a-z]))(?=(?:[^0-9]*?[0-9]){1,8}(?!.*?[0-9]))(?=(?:[^A-Z]*?[A-Z]){1,8}(?!.*?[A-Z]))(?=(?:[^!-\/:-@[-`{-~]*?[!-\/:-@[-`{-~]){1,8}(?!.*?[!-\/:-@[-`{-~]))[a-zA-Z0-9!-\/:-@[-`{-~]{16,25}$
**要更好地查看图像，只需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16-25
- 在字符串中的任何位置需要1到8个a-z字符，不再需要
- 在字符串中的任何位置需要1到8个A-Z字符，不再需要
- 在字符串中的任何位置需要1到8 0-9个字符，不再需要
- 在字符串中的任何位置需要1到8个符号，不再需要
- 允许零空格
实施例
现场演示
https://regex101.com/r/oS4mY2/2
示例文字
注意：第一个示例来自您的提交，但它包含超过8个小写字母，因此它不匹配。
aWoeed1#fde39393aii
aWoeed1#fde39393AII
样本匹配
aWoeed1#fde39393AII
解释
NODE EXPLANATION
--------------------------------------------------------------------------------
^ the beginning of the string
--------------------------------------------------------------------------------
(?= look ahead to see if there is:
--------------------------------------------------------------------------------
(?: group, but do not capture (between 1 and
8 times (matching the most amount
possible)):
--------------------------------------------------------------------------------
[^a-z]*? any character except: 'a' to 'z' (0 or
more times (matching the least amount
possible))
--------------------------------------------------------------------------------
[a-z] any character of: 'a' to 'z'
--------------------------------------------------------------------------------
){1,8} end of grouping
--------------------------------------------------------------------------------
(?! look ahead to see if there is not:
--------------------------------------------------------------------------------
.*? 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
--------------------------------------------------------------------------------
) end of look-ahead
--------------------------------------------------------------------------------
(?= look ahead to see if there is:
--------------------------------------------------------------------------------
(?: group, but do not capture (between 1 and
8 times (matching the most amount
possible)):
--------------------------------------------------------------------------------
[^0-9]*? any character except: '0' to '9' (0 or
more times (matching the least amount
possible))
--------------------------------------------------------------------------------
[0-9] any character of: '0' to '9'
--------------------------------------------------------------------------------
){1,8} end of grouping
--------------------------------------------------------------------------------
(?! look ahead to see if there is not:
--------------------------------------------------------------------------------
.*? 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
--------------------------------------------------------------------------------
) end of look-ahead
--------------------------------------------------------------------------------
(?= look ahead to see if there is:
--------------------------------------------------------------------------------
(?: group, but do not capture (between 1 and
8 times (matching the most amount
possible)):
--------------------------------------------------------------------------------
[^A-Z]*? any character except: 'A' to 'Z' (0 or
more times (matching the least amount
possible))
--------------------------------------------------------------------------------
[A-Z] any character of: 'A' to 'Z'
--------------------------------------------------------------------------------
){1,8} end of grouping
--------------------------------------------------------------------------------
(?! look ahead to see if there is not:
--------------------------------------------------------------------------------
.*? 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
--------------------------------------------------------------------------------
) end of look-ahead
--------------------------------------------------------------------------------
(?= look ahead to see if there is:
--------------------------------------------------------------------------------
(?: group, but do not capture (between 1 and
8 times (matching the most amount
possible)):
--------------------------------------------------------------------------------
[^!-\/:-@[-`{- any character except: '!' to '\/', ':'
~]*? to '@', '[' to '`', '{' to '~' (0 or
more times (matching the least amount
possible))
--------------------------------------------------------------------------------
[!-\/:-@[-`{-~] any character of: '!' to '\/', ':' to
'@', '[' to '`', '{' to '~'
--------------------------------------------------------------------------------
){1,8} end of grouping
--------------------------------------------------------------------------------
(?! look ahead to see if there is not:
--------------------------------------------------------------------------------
.*? any character except \n (0 or more
times (matching the least amount
possible))
--------------------------------------------------------------------------------
[!-\/:-@[-`{-~] any character of: '!' to '\/', ':' to
'@', '[' to '`', '{' to '~'
--------------------------------------------------------------------------------
) end of look-ahead
--------------------------------------------------------------------------------
) end of look-ahead
--------------------------------------------------------------------------------
[a-zA-Z0-9!-\/:-@[- any character of: 'a' to 'z', 'A' to 'Z',
`{-~]{16,25} '0' to '9', '!' to '\/', ':' to '@', '['
to '`', '{' to '~' (between 16 and 25
times (matching the most amount possible))
--------------------------------------------------------------------------------
$ before an optional \n, and the end of the
string
答案 1 :(得分：0)
描述
在您的表达式中，(?=.*[A-Z]{1,})之类的前瞻性正在测试您是否有1个或更多A-Z。如果您有所需字符类的任何数字（大于零），这些将返回true。让它继续测试以查看是否有超过1个匹配只是多余的。
^(?=(?:[^a-z]*?[a-z]){1})(?=(?:[^0-9]*?[0-9]){1})(?=(?:[^A-Z]*?[A-Z]){1})(?=(?:[^!-\/:-@[- { - 〜] *？[ - /：！ - @ - {-~]){1})[a-zA-Z0-9!-\/:-@[- { - 〜] {16,25} $`
**要更好地查看图像，只需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16-25
- 在字符串 中的任何位置至少需要1
- 在字符串 中的任何位置至少需要1
- 在字符串 中的任何位置至少需要1
- 在字符串 中的任何位置至少需要1个符号
- 允许零空格
a-z个字符
A-Z个字符
0-9个字符
实施例
现场演示
https://regex101.com/r/oS4mY2/3
示例文字
请注意，最后一行不匹配，因为它没有符号
aWoeed1#fde39393aii
aWoeed1#fde39393AII
aaaaaaaaaaaaaaaaa1A
样本匹配
MATCH 1
0. [0-19] `aWoeed1#fde39393aii`
MATCH 2
0. [20-39] `aWoeed1#fde39393AII`
解释
NODE EXPLANATION
--------------------------------------------------------------------------------
^ the beginning of the string
--------------------------------------------------------------------------------
(?= look ahead to see if there is:
--------------------------------------------------------------------------------
(?: group, but do not capture (1 times):
--------------------------------------------------------------------------------
[^a-z]*? any character except: 'a' to 'z' (0 or
more times (matching the least amount
possible))
--------------------------------------------------------------------------------
[a-z] any character of: 'a' to 'z'
--------------------------------------------------------------------------------
){1} end of grouping
--------------------------------------------------------------------------------
) end of look-ahead
--------------------------------------------------------------------------------
(?= look ahead to see if there is:
--------------------------------------------------------------------------------
(?: group, but do not capture (1 times):
--------------------------------------------------------------------------------
[^0-9]*? any character except: '0' to '9' (0 or
more times (matching the least amount
possible))
--------------------------------------------------------------------------------
[0-9] any character of: '0' to '9'
--------------------------------------------------------------------------------
){1} end of grouping
--------------------------------------------------------------------------------
) end of look-ahead
--------------------------------------------------------------------------------
(?= look ahead to see if there is:
--------------------------------------------------------------------------------
(?: group, but do not capture (1 times):
--------------------------------------------------------------------------------
[^A-Z]*? any character except: 'A' to 'Z' (0 or
more times (matching the least amount
possible))
--------------------------------------------------------------------------------
[A-Z] any character of: 'A' to 'Z'
--------------------------------------------------------------------------------
){1} end of grouping
--------------------------------------------------------------------------------
) end of look-ahead
--------------------------------------------------------------------------------
(?= look ahead to see if there is:
--------------------------------------------------------------------------------
(?: group, but do not capture (1 times):
--------------------------------------------------------------------------------
[^!-\/:-@[-`{- any character except: '!' to '\/', ':'
~]*? to '@', '[' to '`', '{' to '~' (0 or
more times (matching the least amount
possible))
--------------------------------------------------------------------------------
[!-\/:-@[-`{-~] any character of: '!' to '\/', ':' to
'@', '[' to '`', '{' to '~'
--------------------------------------------------------------------------------
){1} end of grouping
--------------------------------------------------------------------------------
) end of look-ahead
--------------------------------------------------------------------------------
[a-zA-Z0-9!-\/:-@[- any character of: 'a' to 'z', 'A' to 'Z',
`{-~]{16,25} '0' to '9', '!' to '\/', ':' to '@', '['
to '`', '{' to '~' (between 16 and 25
times (matching the most amount possible))
--------------------------------------------------------------------------------
$ before an optional \n, and the end of the
string
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