敏感信息脱敏

1.在很多评论列表中都可以看到，对于评论者的手机号或者昵称等等都是用了*进行部分遮挡，这样就可以看不出来是谁了。

2. 展示脱敏的类 DesensitizationUtil ：（不用担心要脱敏的字符串的长度太小）

package com.imooc.utils;

import sun.applet.Main;

/**
 * 通用脱敏工具类
 * 可用于：
 *      用户名
 *      手机号
 *      邮箱
 *      地址等
 */
public class DesensitizationUtil {

    private static final int SIZE = 6;
    private static final String SYMBOL = "*";

    public static void main(String[] args) {
        String name = commonDisplay("慕课网");
        String mobile = commonDisplay("13900000000");
        String mail = commonDisplay("[email protected]");
        String address = commonDisplay("北京大运河东路888号");

        System.out.println(name);
        System.out.println(mobile);
        System.out.println(mail);
        System.out.println(address);
    }

    /**
     * 通用脱敏方法
     * @param value
     * @return
     */
    public static String commonDisplay(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();
    }

}

使用结果：

3.具体使用：

@Override
public PagedGridResult queryPagedComments(String itemId, Integer level,
                                              Integer page,Integer pageSize) {

    Map<String,Object>map =new HashMap<>();
    map.put("itemId",itemId);
    map.put("level",level);

    /*** page: 第几页 * pageSize: 每页显示条数 */
    PageHelper.startPage(page, pageSize);
    List<ItemCommentVO> list=itemsMapperCustom.queryItemComments(map);
    for (ItemCommentVO vo :list){
        vo.setNickname(DesensitizationUtil.commonDisplay(vo.getNickname()));
    }

    return setterPagedGrid(list,page);
}