問題描述
我正在尋找一個 ColdFusion 或 Java 正則表達(dá)式(用于替換函數(shù))，它只匹配數(shù)字 [0-9]、字母 [az]，但不包含 ASCII 葡萄牙語 字母(unicode latin，如 ? 和 ?).
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 ? and ?).
有些是這樣的:
str = reReplaceNoCase(str, "match none number/letter but keep unicode latin chars", "", "ALL");
輸入字符串:informa??o 123 ?:#$%"期望的結(jié)果:informa??o 123"
我知道我可以用 [az][0-9] 匹配字母和數(shù)字，但這不匹配 ? 和 ? 等字母.
I know I can match letters and numbers with [a-z][0-9], but this doesn't match letters such as ? and ?.
推薦答案
試試字母數(shù)字字符類:w，它應(yīng)該匹配字母、數(shù)字和下劃線.
Try alphanumeric character class: w, it should match letters, digits, and underscores.
您也可以使用特殊的命名類 p{L}(我不知道，Java RegEx 解析器是否支持它).因此，在 C# 中，您的任務(wù)可以使用以下代碼完成:
Also you can use special named class p{L} (I don't know, does Java RegEx parser support it).
So in C# your task can be done using following code:
var input = "informa??o 123 ?:#$%";
var result = Regex.Replace(input, @"[^p{L}s0-9]", string.Empty);
Regex [^p{L}s0-9] 表示:該類中的任何字符not(所有字母、空格、數(shù)字).因此它在您的示例 ?:#$% 中匹配，我們可以用空字符串替換這些字符.
Regex [^p{L}s0-9] means: any character not in this class (all letters, white space, digits). Thereby it matches in your example ?:#$% and we can replace these characters with empty string.
這篇關(guān)于如何在 ColdFusion 或 Java 正則表達(dá)式中匹配拉丁 unicode 字符?的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網(wǎng)！