脱敏工具

app/app-iot-server/src/main/java/com/yihu/iot/util/conceal/ConcealUtil.java

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package com.yihu.iot.util.conceal;
/**
 * 数据脱敏工具
 * Created by zdm on 2019/4/2.
 */
public class ConcealUtil {
    private static final int SIZE = 6;
    private static final String SYMBOL = "*";
    /**
     * 电话号码脱敏，达到保密效果
     *
     * @param userName 用户名
     * @return 替换后的用户名
     */
    public static String phoneConceal(String userName) {
        String userNameAfterReplaced = "";
        if (userName == null) {
            userName = "";
        }
        int nameLength = userName.length();
        if (nameLength <= 1) {
            userNameAfterReplaced = "*";
        } else if (nameLength == 2) {
            userNameAfterReplaced = replaceAction(userName, "(?<=\\d{0})\\d(?=\\d{1})");
        } else if (nameLength >= 3 && nameLength <= 6) {
            userNameAfterReplaced = replaceAction(userName, "(?<=\\d{1})\\d(?=\\d{1})");
        } else if (nameLength >= 7 && nameLength <= 10) {
            userNameAfterReplaced = replaceAction(userName, "(?<=\\d{3})\\d(?=\\d{3})");
        } else if (nameLength >= 11) {
            userNameAfterReplaced = replaceAction(userName, "(?<=\\d{3})\\d(?=\\d{4})");
        }
        return userNameAfterReplaced;
    }
    /**
     * 实际替换动作
     *
     * @param username username
     * @param regular  正则
     * @return
     */
    private static String replaceAction(String username, String regular) {
        return username.replaceAll(regular, "*");
    }
    /**
     * 身份证号替换，保留前四位和后四位
     * <p>
     * 如果身份证号为空 或者 null ,返回null ；否则，返回替换后的字符串；
     *
     * @param idCard 身份证号
     * @return
     */
    public static String idCardConceal(String idCard) {
        if (idCard.isEmpty() || idCard == null) {
            return null;
        } else {
            return replaceAction(idCard, "(?<=\\d{6})\\d(?=\\d{4})");
        }
    }
    /**
     * 银行卡替换，保留后四位
     * <p>
     * 如果银行卡号为空 或者 null ,返回null ；否则，返回替换后的字符串；
     *
     * @param bankCard 银行卡号
     * @return
     */
    public static String bankCardConceal(String bankCard) {
        if (bankCard.isEmpty() || bankCard == null) {
            return null;
        } else {
            return replaceAction(bankCard, "(?<=\\d{0})\\d(?=\\d{4})");
        }
    }
    /**
     * 姓名及地址脱敏
     * @param value
     * @return
     */
    public static String nameOrAddrConceal(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(value.charAt(0));
            stringBuilder.append(SYMBOL);
        } 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();
    }
/*    public static void main(String[] args) throws IOException {
        String strName= nameOrAddrConceal("张三");
        System.out.println(strName);
        String addr= nameOrAddrConceal("厦门市");
        System.out.println(addr);
        String idcard= idCardConceal("350825199012033283");
        System.out.println(idcard);
        String phone= phoneConceal("17689202624");
        System.out.println(phone);
    }*/
}