如何在ColdFusion或Java regex中匹配拉丁unicode字符？ [英] How do I match latin unicode characters in ColdFusion or Java regex?

问题描述

我正在寻找只匹配数字[0-9]，字母[az]，但包括无ASCII 葡萄牙语字母的ColdFusion或Java regex（在替换函数中使用） （unicode latin，如ç和ã）。

I'm looking for a ColdFusion or Java regex (to use in a replace function) that will only match numbers [0-9], letters [a-z], but include none ASCII Portuguese letters (unicode latin, like ç and ã).

一些像这样：

str = reReplaceNoCase(str, "match none number/letter but keep unicode latin chars", "", "ALL");

输入字符串：informação123？：＃$％

所需结果：informação123

匹配字母和数字与 [az] [0-9] ，但这不匹配字母如ç和ã。

I know I can match letters and numbers with [a-z][0-9], but this doesn't match letters such as ç and ã.

推荐答案

尝试字母数字字符类： \ w ，它应该匹配字母，数字和下划线。

Try alphanumeric character class: \w, it should match letters, digits, and underscores.

也可以使用特殊的命名类 \p {L} （我不知道，Java RegEx解析器支持它）。
所以在C＃中你的任务可以使用下面的代码：

Also you can use special named class \p{L} (I don't know, does Java RegEx parser support it). So in C# your task can be done using following code:

var input = "informação 123 ?:#$%";
var result = Regex.Replace(input, @"[^\p{L}\s0-9]", string.Empty);

Regex [^ \p {L} \s0-9] 表示：此类别中的任何字符不（所有字母，空格，数字）。因此，在您的示例？中匹配：＃$％，我们可以用空字符串替换这些字符。

Regex [^\p{L}\s0-9] means: any character not in this class (all letters, white space, digits). Thereby it matches in your example ?:#$% and we can replace these characters with empty string.

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