正则表达式教程：GUID/UUID 匹配

一、正则解释

正则表达式：/^[a-f\d]{4}(?:[a-f\d]{4}-){4}[a-f\d]{12}$/i

解释：

• ^: 匹配字符串的开头
• [a-f\d]{4}: 匹配 4 个十六进制数字或数字
• (?:[a-f\d]{4}-){4}: 匹配 4 组 4 个十六进制数字或数字，并以连字符分隔
• [a-f\d]{12}: 匹配 12 个十六进制数字或数字
• $: 匹配字符串的末尾
• i: 不区分大小写

二、使用场景

这个正则表达式用于匹配 GUID（全局唯一标识符）或 UUID（通用唯一标识符）格式的字符串。GUID/UUID 通常用于数据库主键、唯一标识符或跟踪事务。

三、代码示例

JavaScript

const regex = /^[a-f\d]{4}(?:[a-f\d]{4}-){4}[a-f\d]{12}$/i;

const testStrings = [
  "e155518c-ca1b-443c-9be9-fe90fdab7345",
  "41E3DAF5-6E37-4BCC-9F8E-0D9521E2AA8D",
  "00000000-0000-0000-0000-000000000000",
];

for (const testString of testStrings) {
  console.log(`${testString} ${regex.test(testString) ? "匹配" : "不匹配"}`);
}

Java

import java.util.regex.Pattern;

public class GuidMatcher {

    private static final Pattern GUID_PATTERN = Pattern.compile("^[a-f\\d]{4}(?:[a-f\\d]{4}-){4}[a-f\\d]{12}
import java.util.regex.Pattern;

public class GuidMatcher {

    private static final Pattern GUID_PATTERN = Pattern.compile("^[a-f\\d]{4}(?:[a-f\\d]{4}-){4}[a-f\\d]{12}$", Pattern.CASE_INSENSITIVE);

    public static void main(String[] args) {
        String[] testStrings = {
                "e155518c-ca1b-443c-9be9-fe90fdab7345",
                "41E3DAF5-6E37-4BCC-9F8E-0D9521E2AA8D",
                "00000000-0000-0000-0000-000000000000"
        };

        for (String testString : testStrings) {
            System.out.println(testString + " " + (GUID_PATTERN.matcher(testString).matches() ? "匹配" : "不匹配"));
        }
    }
}
quot;, Pattern.CASE_INSENSITIVE);

    public static void main(String[] args) {
        String[] testStrings = {
                "e155518c-ca1b-443c-9be9-fe90fdab7345",
                "41E3DAF5-6E37-4BCC-9F8E-0D9521E2AA8D",
                "00000000-0000-0000-0000-000000000000"
        };

        for (String testString : testStrings) {
            System.out.println(testString + " " + (GUID_PATTERN.matcher(testString).matches() ? "匹配" : "不匹配"));
        }
    }
}

PHP

<?php

$regex = "/^[a-f\d]{4}(?:[a-f\d]{4}-){4}[a-f\d]{12}$/i";

$testStrings = [
    "e155518c-ca1b-443c-9be9-fe90fdab7345",
    "41E3DAF5-6E37-4BCC-9F8E-0D9521E2AA8D",
    "00000000-0000-0000-0000-000000000000"
];

foreach ($testStrings as $testString) {
    echo "$testString " . (preg_match($regex, $testString) ? "匹配" : "不匹配") . PHP_EOL;
}

Python

import re

regex = r"^[a-f\d]{4}(?:[a-f\d]{4}-){4}[a-f\d]{12}
import re

regex = r"^[a-f\d]{4}(?:[a-f\d]{4}-){4}[a-f\d]{12}$"

testStrings = [
    "e155518c-ca1b-443c-9be9-fe90fdab7345",
    "41E3DAF5-6E37-4BCC-9F8E-0D9521E2AA8D",
    "00000000-0000-0000-0000-000000000000"
]

for testString in testStrings:
    print(f"{testString} {(re.match(regex, testString) is not None)}")
quot;

testStrings = [
    "e155518c-ca1b-443c-9be9-fe90fdab7345",
    "41E3DAF5-6E37-4BCC-9F8E-0D9521E2AA8D",
    "00000000-0000-0000-0000-000000000000"
]

for testString in testStrings:
    print(f"{testString} {(re.match(regex, testString) is not None)}")