正则表达式教程：统一社会信用代码(宽松匹配)

一、正则解释

正则表达式：^(([0-9A-Za-z]{15})|([0-9A-Za-z]{18})|([0-9A-Za-z]{20}))$/

• ^： 正则表达式的开头
• $： 正则表达式的结尾
• ()： 捕获组
• |： 逻辑或（匹配任何捕获组）
• [0-9A-Za-z]： 匹配数字或字母
• {15}： 匹配 15 个字符
• {18}： 匹配 18 个字符
• {20}： 匹配 20 个字符

二、使用场景

该正则表达式用于宽松匹配统一社会信用代码，包括 15 位、18 位和 20 位的数字和字母组合。

三、代码示例

JavaScript：

const regex = /^(([0-9A-Za-z]{15})|([0-9A-Za-z]{18})|([0-9A-Za-z]{20}))$/;

const codes = ['91110108772551611J', '911101085923662400'];

for (const code of codes) {
  if (regex.test(code)) {
    console.log(`${code} is a valid unified social credit code.`);
  } else {
    console.log(`${code} is not a valid unified social credit code.`);
  }
}

Java：

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class UnifiedSocialCreditCodeMatcher {

  private static final String REGEX = "^(([0-9A-Za-z]{15})|([0-9A-Za-z]{18})|([0-9A-Za-z]{20}))
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class UnifiedSocialCreditCodeMatcher {

  private static final String REGEX = "^(([0-9A-Za-z]{15})|([0-9A-Za-z]{18})|([0-9A-Za-z]{20}))$";

  public static void main(String[] args) {
    String[] codes = {"91110108772551611J", "911101085923662400"};

    for (String code : codes) {
      Pattern pattern = Pattern.compile(REGEX);
      Matcher matcher = pattern.matcher(code);

      if (matcher.matches()) {
        System.out.println(code + " is a valid unified social credit code.");
      } else {
        System.out.println(code + " is not a valid unified social credit code.");
      }
    }
  }
}
quot;;

  public static void main(String[] args) {
    String[] codes = {"91110108772551611J", "911101085923662400"};

    for (String code : codes) {
      Pattern pattern = Pattern.compile(REGEX);
      Matcher matcher = pattern.matcher(code);

      if (matcher.matches()) {
        System.out.println(code + " is a valid unified social credit code.");
      } else {
        System.out.println(code + " is not a valid unified social credit code.");
      }
    }
  }
}

PHP：

<?php

$regex = '/^(([0-9A-Za-z]{15})|([0-9A-Za-z]{18})|([0-9A-Za-z]{20}))$/';

$codes = ['91110108772551611J', '911101085923662400'];

foreach ($codes as $code) {
  if (preg_match($regex, $code)) {
    echo "$code is a valid unified social credit code.<br>";
  } else {
    echo "$code is not a valid unified social credit code.<br>";
  }
}
?>

Python：

import re

regex = r'^(([0-9A-Za-z]{15})|([0-9A-Za-z]{18})|([0-9A-Za-z]{20}))
import re

regex = r'^(([0-9A-Za-z]{15})|([0-9A-Za-z]{18})|([0-9A-Za-z]{20}))$'

codes = ['91110108772551611J', '911101085923662400']

for code in codes:
  if re.match(regex, code):
    print(f'{code} is a valid unified social credit code.')
  else:
    print(f'{code} is not a valid unified social credit code.')
#x27;

codes = ['91110108772551611J', '911101085923662400']

for code in codes:
  if re.match(regex, code):
    print(f'{code} is a valid unified social credit code.')
  else:
    print(f'{code} is not a valid unified social credit code.')