package com.nq.utils;
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import org.apache.commons.lang3.StringUtils;
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import java.util.regex.Pattern;
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public final class PhoneUtil {
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/**
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* 严格大陆手机号（11位）：有效运营商号段
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* 13x | 14[5-9] | 15[0-35-9] | 16[2567] | 17[0-8] | 18x | 19[0-35-9]
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*/
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private static final Pattern STRICT_MOBILE = Pattern.compile(
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"^1(3\\d|4[5-9]|5[0-35-9]|6[2567]|7[0-8]|8\\d|9[0-35-9])\\d{8}$");
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private PhoneUtil() {
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}
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/** 规范为 11 位大陆手机号，非法返回 null */
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public static String normalizeChinaMobile(String phone) {
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if (StringUtils.isBlank(phone)) {
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return null;
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}
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String digits = phone.trim().replaceAll("[^0-9]", "");
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if (digits.startsWith("86") && digits.length() == 13) {
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digits = digits.substring(2);
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}
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if (digits.length() != 11 || !digits.startsWith("1")) {
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return null;
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}
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return digits;
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}
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public static boolean isValidChinaMobile(String phone) {
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String normalized = normalizeChinaMobile(phone);
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return normalized != null && STRICT_MOBILE.matcher(normalized).matches();
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}
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}
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