使用.match()方法检查String是否为UUID。

public boolean isUUID(String s){
    return s.match("^[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}$");
}

感谢@usertatha做了一些修改

function isUUID ( uuid ) {
    let s = "" + uuid;

    s = s.match('^[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}$');
    if (s === null) {
      return false;
    }
    return true;
}

我向Apache Commons validator添加了一个UUID验证器。它还没有合并，但你可以在这里投票:

https://github.com/apache/commons-validator/pull/68

正则表达式来拯救

/^[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}$/.test('01234567-9ABC-DEF0-1234-56789ABCDEF0');

或者用括号

/^\{?[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}‌​\}?$/

版本1到5，当version被省略时不使用多版本正则表达式。

const uuid_patterns = { 1: /^[0-9A-F]{8}-[0-9A-F]{4}-1[0-9A-F]{3}-[0-9A-F]{4}-[0-9A-F]{12}$/i, 2: /^[0-9A-F]{8}-[0-9A-F]{4}-2[0-9A-F]{3}-[0-9A-F]{4}-[0-9A-F]{12}$/i, 3: /^[0-9A-F]{8}-[0-9A-F]{4}-3[0-9A-F]{3}-[0-9A-F]{4}-[0-9A-F]{12}$/i, 4: /^[0-9A-F]{8}-[0-9A-F]{4}-4[0-9A-F]{3}-[89AB][0-9A-F]{3}-[0-9A-F]{12}$/i, 5: /^[0-9A-F]{8}-[0-9A-F]{4}-5[0-9A-F]{3}-[89AB][0-9A-F]{3}-[0-9A-F]{12}$/i }; const isUUID = (input, version) => { if(typeof input === "string"){ if(Object.keys(uuid_patterns).includes(typeof version === "string" ? version : String(version))){ return uuid_patterns[version].test(input); } else { return Object.values(uuid_patterns).some(pattern => pattern.test(input)); } } return false; } // Testing let valid = [ 'A987FBC9-4BED-3078-CF07-9141BA07C9F3', 'A987FBC9-4BED-4078-8F07-9141BA07C9F3', 'A987FBC9-4BED-5078-AF07-9141BA07C9F3', ]; let invalid = [ '', 'xxxA987FBC9-4BED-3078-CF07-9141BA07C9F3', 'A987FBC9-4BED-3078-CF07-9141BA07C9F3xxx', 'A987FBC94BED3078CF079141BA07C9F3', '934859', '987FBC9-4BED-3078-CF07A-9141BA07C9F3', 'AAAAAAAA-1111-1111-AAAG-111111111111', ]; valid.forEach(test => console.log("Valid case, result: "+isUUID(test))); invalid.forEach(test => console.log("Invalid case, result: "+isUUID(test)));

我有这个函数，但本质上它和公认的答案是一样的。

export default function isUuid(uuid: string, isNullable: boolean = false): boolean {
    return isNullable
        ? /^[0-9a-f]{8}-[0-9a-f]{4}-[0-5][0-9a-f]{3}-[089ab][0-9a-f]{3}-[0-9a-f]{12}$/i.test(uuid)
        : /^[0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i.test(uuid);
}