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import java.util.regex.Pattern;<br>/*** 校验器：利用正则表达式校验邮箱、手机号等**/<br><br>public class Validator {<br>/*** 正则表达式：验证用户名*/ //public static final String REGEX_USERNAME = "^[a-zA-Z]\\w{5,17}$"; public static final String REGEX_USERNAME = "^[a-zA-Z]\\w{2,20}$";<br>/*** 正则表达式：验证密码*/ public static final String REGEX_PASSWORD = "^[a-zA-Z0-9]{6,16}$";<br>/*** 正则表达式：验证手机号*/// public static final String REGEX_MOBILE = "^((13[0-9])|(15[^4,\\D])|(18[0,5-9]))\\d{8}$"; public static final String REGEX_MOBILE = "^((13[0-9])|(15[^4,\\D])|(17[0-9])|(18[0-9]))\\d{8}$";<br>/*** 正则表达式：验证邮箱*/ public static final String REGEX_EMAIL = "^([a-z0-9A-Z]+[-|\\.]?)+[a-z0-9A-Z]@([a-z0-9A-Z]+(-[a-z0-9A-Z]+)?\\.)+[a-zA-Z]{2,}$";<br>/*** 校验用户名** @param username* @return 校验通过返回true，否则返回false*/ public static boolean isUsername(String username) { return Pattern.matches(REGEX_USERNAME, username); }<br>/*** 校验密码** @param password* @return 校验通过返回true，否则返回false*/ public static boolean isPassword(String password) { return Pattern.matches(REGEX_PASSWORD, password); }<br>/*** 校验手机号** @param mobile* @return 校验通过返回true，否则返回false*/ public static boolean isMobile(String mobile) { return Pattern.matches(REGEX_MOBILE, mobile); }<br>/*** 校验邮箱** @param email* @return 校验通过返回true，否则返回false*/ public static boolean isEmail(String email) { return Pattern.matches(REGEX_EMAIL, email); } public static void main(String[] args) { String username = "fdsdfsdj"; System.out.println(Validator.isUsername(username)); }} |
RE validation in Java EE(java.util.regex.Pattern)
原文：https://www.cnblogs.com/ren9ie/p/10962538.html