Intro Common Regex
這篇介紹Common Regex，它是正則表示式，針對參數做基本檢核(禁止非法字元)。
Pattern Example
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| // UserId: 長度1 - 30 小寫英數混合，不允許特殊字元
private static final Pattern userIdPattern = Pattern.compile("^[0-9a-z]{1,30}$");
// Password: 長度6 - 12 字元，only English and number
private static final Pattern passwordPattern = Pattern.compile("^[0-9a-zA-Z]{6,12}$");
// Url: start-http:// or https://，不允許特殊字元
private static final Pattern urlPattern = Pattern.compile(
"^(http(s)?:\\/\\/)?(www.)?([a-zA-Z0-9])+([\\-\\.]{1}[a-zA-Z0-9]+)*\\.[a-zA-Z0-9]{2,5}(:[0-9]{1,5})?(\\/[^\\s]*)?$");
// telegram chat_id : 長度 1 - 100字元，允許數字和-
private static final Pattern telegramChatIdPattern = Pattern.compile("^[-0-9]{1,100}$");
// telegram token : 長度 1 - 200，允許英(大小寫)數字、(:)、(-)、(_)
private static final Pattern telegramTokenPattern = Pattern.compile("^[0-9a-zA-Z:$-/_]{1,200}$");
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Implementation Example
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| public static boolean isValidatedUserId(String value) {
if (isEmpty(value)) {
return false;
}
return isMatched(userIdPattern, value); //替換Pattern
}
public static boolean isMatched(Pattern pattern, String value) {
return pattern.matcher(value).matches();
}
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