Question

我正在尝试从日志文件中获取其行格式不同的数据，但保证将重要信息放在[]中，例如：

[User] has [do something] on [system] at [time]

或

[system] encounters [exception] at [time]

如果可能的话，我想写一个正则表达式来获取每个日志行中的所有信息，即正则表达式必须匹配同一行中的许多resutl。例如：

[Admin] has [logged out] on [admin page] at [Monday 20 May, 11:00] 将返回Admin, logged out, admin page, Monday 20 May, 11:00
[Order page] encounters [NullPointerException] at [Monday 20 May, 11:00]将返回OrderPage, NullPointerException, Monday 20 May, 11:00

我正在研究python，但其他语言或纯正则表达式的答案都很好。感谢

Answer 1

>>> import re
>>> text = "[Admin] has [logged out] on [admin page] at [Monday 20 May, 11:00]"
>>> re.findall(r'\[([^\]]*)\]', text)
['Admin', 'logged out', 'admin page', 'Monday 20 May, 11:00']

详细：

>>> text = "[Order page] encounters [NullPointerException] at [Monday 20 May, 11:00]"
>>> re.findall(r'''\[            # a literal [ character (needs backslash escape)
                     (           # save following group
                       [^\]]     # match any character except literal ]
                       *         # match as many as possible of these
                     )           # end group
                    \]           # a literal ] character
''', text, flags=re.VERBOSE)
['Order page', 'NullPointerException', 'Monday 20 May, 11:00']

Answer 2

或者作为紧凑的perl单线。与 jamylak 使用相同的正则表达式：

perl -pne '$_=join(", ",/\[([^\]]*)\]/g)."\n"'

在同一个String中匹配许多结果

2 个答案: