我希望只允许输入来自英文字母表和德文字母表的数据。
例如像 öäü
或法语像 áê
或中文像 ...
我该如何配置正则表达式,以便接受来自国际字母表的所有字母字符?
由于您具体要求Unicode,\p{L}
是 Unicode 字母的快捷方式。不过,并非所有正则表达式支持此语法。例如,.NET、Perl、Java和JGSoft 正则表达式引擎支持,而Python不支持。
因此,例如 \b\p{L}+\b
将匹配包含 Unicode 字符的整个单词。
\p{L}
那样提供抽象,所以这很困难。您可以始终从所有Unicode字母代码点创建自己的字符类(可怕!),或者使用Steve Levithan的XRegExp库和Unicode插件:http://blog.stevenlevithan.com/archives/xregexp-unicode-plugin - Tim Pietzckeru
修改器的 \p{L}。 - mcfedru
修饰符在这里起作用吗?目前似乎不是这样... - Don McCurdy这取决于不同的编程语言。有些语言支持“Unicode”标志,可以扩展\d
、\w
等元字符。有些语言则支持范围内的等价类,例如[[=e=]]
可以匹配e
、é
、ê
等字符。你所使用的编程语言或库的正则表达式文档会详细解释可用的选项。
使用PCRE,可以使用\w
来表示“单词”字符。当正确配置后,它也支持Unicode。
\w
不是边界,而是单词字符类。 - Gumbo\b
则表示单词边界。 - 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DD3A\uDD3C-\uDD45\uDD47-\uDD71\uDD73-\uDD76\uDD7A-\uDDA2\uDDA5-\uDDAA\uDDAE-\uDDCA\uDDCD-\uDDFF\uDE70-\uDE73\uDE78-\uDE7A\uDE80-\uDE82\uDE90-\uDE95]|\uD869[\uDC00-\uDED6\uDF00-\uDFFF]|\uD86D[\uDC00-\uDF34\uDF40-\uDFFF]|\uD86E[\uDC00-\uDC1D\uDC20-\uDFFF]|\uD873[\uDC00-\uDEA1\uDEB0-\uDFFF]|\uD87A[\uDC00-\uDFE0]|\uD87E[\uDC00-\uDE1D]|\uDB40[\uDC20-\uDC7F\uDD00-\uDDEF])+/g
我不太了解正则表达式,但我找到了这个,它帮助了我在React-Native
中使用。
以下是使用Unicode属性转义匹配跨国际单词系统的所有字母的正则表达式:
检查Unicode属性转义的语言支持,可能在旧版本中不可用,特别是在Web浏览器(JavaScript)中
测试字符串
!"£$%^&*()_+[]{}'#;@~,./<?>¬``
0123465789
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山人口刀木日月女子馬鳥目水
私金魚煙草莨東京
わたしきんぎょたばことうきょう
ワタシキンギョタバコトウキョウ
קרשתאבגדהוזחטיכ
abcdefghijklmonpqrstuvwxyz
ABCDEFGHIJKLMNOPQRSTUVWXYZ
©▓±■╣║¢¥
PCRE(PHP)/ GoLang - https://regex101.com/r/iRTxw4/2
匹配字母: \p{L}+
匹配数字: \p{N}+
匹配字母和数字: \p{N}+|\p{L}+
匹配非字母和数字: [^\p{L}\p{N}]
ECMAScript(JavaScript)
仍在研究中...
[a-zäöüß]
等。
...
! - kennytm