正则表达式

1、连续6位数字的验证码

Pattern pattern=Pattern.compile("(d{6})");
       Matcher matcher=pattern.matcher(body);
        if (matcher.find()){
            code = matcher.group(0);
        }

public static boolean isNull(EditText editText) {
        String text = editText.getText().toString().trim();
        if (text != null && text.length() > 0) {
            return false;
        }
        return true;
    }

    /** * 账号校验 * * @param text * @账号长度为6-18位 */
    public static boolean matchAccount(String text) {
        if (Pattern.compile("^[a-z0-9_-]{5,18}$").matcher(text).matches()) {
            return true;
        }
        return false;
    }

    /** * Ip地址校验 * * @param ip * @return */
    public static boolean matchIpAddress(String ip) {
        Pattern pa = Pattern
                .compile("^(d{1,2}|1dd|2[0-4]d|25[0-5]).(d{1,2}|1dd|2[0-4]d|25[0-5])$");
        Matcher ma = pa.matcher(ip);
        boolean b = ma.matches();
        return b;
    }

    /** * 手机号码校验 * * @param text * @return */
    public static boolean matchPhoneno(String text) {
        Pattern p = Pattern
                .compile("^((1[3,5,8][0-9])|(14[5,7])|(17[0,6,7,8]))//d{8$}");
        // /(^1[3|4|5|7|8][0-9]{9}$)/;
        Matcher m = p.matcher(text);
        return m.matches();
    }

    public static boolean isMobileNO(String mobiles) {
        // Pattern p =
        // Pattern.compile("^((13[0-9])|(15[^4,D])|(17[0-9])|(18[0,5-9]))d{8}$");
        Pattern p = Pattern.compile("^1[3|4|5|7|8][0-9]{9}$");
        Matcher m = p.matcher(mobiles);
        // logger.info(m.matches()+"---");
        return m.matches();
    }

    /** * 校验网关编号 * @param gatewayno * @return */
    public static boolean isGatewayNO(String gatewayno) {

        Pattern p = Pattern.compile("^[0-9]{16}$");    //长度为16的数字串
        Matcher m = p.matcher(gatewayno);

        return m.matches();
    }

    /** * 邮箱校验 * * @param text * @return */
    public static boolean matchEmail(String text) {
        if (Pattern.compile("w[w.-]*@[w.]+.w+").matcher(text)
                .matches()) {
            return true;
        }
        return false;
    }

    public static boolean isEmail(String email) {
        String str = "^([a-zA-Z0-9]*[-_]?[a-zA-Z0-9]+)*@([a-zA-Z0-9]*[-_]?[a-zA-Z0-9]+)+[.][A-Za-z]{2,3}([.][A-Za-z]{2})?$";
        Pattern p = Pattern.compile(str);
        Matcher m = p.matcher(email);
        // logger.info(m.matches()+"---");
        return m.matches();
    }

    /** * is null or its length is 0 * * <pre> * isEmpty(null) = true; * isEmpty(&quot;&quot;) = true; * isEmpty(&quot; &quot;) = false; * </pre> * * @param str str * @return if string is null or its size is 0,return true,else return * false. */
    public static boolean isEmpty(CharSequence str) {

        return (str == null || str.length() == 0);
    }