java.util.regex.Pattern正则表达式写验证器示例

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));
 
    }
 
}

 

posted @ 2019-04-15 10:33  luckLLL  阅读(118)  评论(0编辑  收藏  举报