验证只包含中英文和数字的字符串

/**
 * 验证只包含中英文和数字的字符串
 *
 * @param keyword
 * @return
 */
public static Boolean validKeyword(String keyword) {
    String regex = "^[a-zA-Z0-9\u4E00-\u9FA5]+$";
    Pattern pattern = Pattern.compile(regex);
    Matcher match = pattern.matcher(keyword);
    return match.matches();
}

判断是否是邮箱

/**
 * 匹配邮箱正则
 */
private static final Pattern VALID_EMAIL_ADDRESS_REGEX =
        Pattern.compile("^[A-Z0-9._%+-]+@[A-Z0-9.-]+\\.[A-Z]{2,6}$", Pattern.CASE_INSENSITIVE);
 
/**
 * 判断是否是邮箱
 *
 * @param emailStr
 * @return
 */
public static boolean isEmail(String emailStr) {
    Matcher matcher = VALID_EMAIL_ADDRESS_REGEX.matcher(emailStr);
    return matcher.find();
}

判断是否是网址

/**
 * 判断是否是网址
 *
 * @param urlString
 * @return
 */
public static boolean isURL(String urlString) {
    String regex = "^([hH][tT]{2}[pP]:/*|[hH][tT]{2}[pP][sS]:/*|[fF][tT][pP]:/*)(([A-Za-z0-9-~]+).)+([A-Za-z0-9-~\\/])+(\\?{0,1}(([A-Za-z0-9-~]+\\={0,1})([A-Za-z0-9-~]*)\\&{0,1})*)$";
    Pattern pattern = Pattern.compile(regex);
    if (pattern.matcher(urlString).matches()) {
        return true;
    } else {
        return false;
    }
}

判断是否为11位电话号码

/**
 * 判断是否为11位电话号码
 *
 * @param phone
 * @return
 */
public static boolean isPhone(String phone) {
    Pattern pattern = Pattern.compile("^((13[0-9])|(14[5,7])|(15[^4,\\D])|(17[0-8])|(18[0-9]))\\d{8}$");
    Matcher matcher = pattern.matcher(phone);
    return matcher.matches();
}