正则表达式实现对手机号、邮箱进行格式验证、手机号邮箱用户名地址**隐藏

正则表达式实现对手机号，邮箱进行格式验证。

手机号中间打码：如139****8987，用户名打码：如 张**，地址打码：如 上海市浦东新区*****XX大厦A座7BC

 /**
     * 验证手机号格式
     *
     * @param number
     * @return
     */
    public static boolean isMobileNum(String number) {
        String num = "[1][3578]\\d{9}";
        if (TextUtils.isEmpty(number)) {
            return false;
        } else {
            return number.matches(num);
        }
    }

    /**
     * 验证邮箱格式
     *
     * @param email
     * @return
     */
    public static boolean isValidEmail(String email) {
        if ((email != null) && (!email.isEmpty())) {
            return Pattern.matches("^(\\w+([-.][A-Za-z0-9]+)*){3,18}@\\w+([-.][A-Za-z0-9]+)*\\.\\w+([-.][A-Za-z0-9]+)*$", email);
        }
        return false;
    }

    /**
     * 手机号(数字)中间四位打码
     *
     * @param str
     * @return
     */
    public String hideInfo(String str) {
        return str.replaceAll("(\\d{3})\\d{4}(\\d{4})", "$1****$2");
    }

    /**
     * 除姓名第一位外均打码
     *
     * @param str
     * @return
     */
    public String replaceNameX(String str) {
        String reg = ".{1}";
        StringBuffer sb = new StringBuffer();
        Pattern p = Pattern.compile(reg);
        Matcher m = p.matcher(str);
        int i = 0;
        while (m.find()) {
            i++;
            if (i == 1)
                continue;
            m.appendReplacement(sb, "*");
        }
        m.appendTail(sb);
        return sb.toString();
    }

    /**
     * 汉字中间四位打码
     *
     * @param value
     * @return
     */
      private static final int SIZE = 4;
    private static final String SYMBOL = "*";
    public String display(String value) {
        if (null == value || "".equals(value)) {
            return value;
        }
        int len = value.length();
        int pamaone = len / 2;
        int pamatwo = pamaone - 1;
        int pamathree = len % 2;
        StringBuilder stringBuilder = new StringBuilder();
        if (len <= 2) {
            if (pamathree == 1) {
                return SYMBOL;
            }
            stringBuilder.append(SYMBOL);
            stringBuilder.append(value.charAt(len - 1));
        } else {
            if (pamatwo <= 0) {
                stringBuilder.append(value.substring(0, 1));
                stringBuilder.append(SYMBOL);
                stringBuilder.append(value.substring(len - 1, len));

            } else if (pamatwo >= SIZE / 2 && SIZE + 1 != len) {
                int pamafive = (len - SIZE) / 2;
                stringBuilder.append(value.substring(0, pamafive));
                for (int i = 0; i < SIZE; i++) {
                    stringBuilder.append(SYMBOL);
                }
                if ((pamathree == 0 && SIZE / 2 == 0) || (pamathree != 0 && SIZE % 2 != 0)) {
                    stringBuilder.append(value.substring(len - pamafive, len));
                } else {
                    stringBuilder.append(value.substring(len - (pamafive + 1), len));
                }
            } else {
                int pamafour = len - 2;
                stringBuilder.append(value.substring(0, 1));
                for (int i = 0; i < pamafour; i++) {
                    stringBuilder.append(SYMBOL);
                }
                stringBuilder.append(value.substring(len - 1, len));
            }
        }
        return stringBuilder.toString();
    }