隐藏手机号、邮箱等敏感信息

Intro

做项目的时候，页面上有一些敏感信息，需要用“*”隐藏一些比较重要的信息，于是打算写一个通用的方法。

Let's do it !

Method 1:指定左右字符数量

Method 1.1 中间的*的个数和实际长度有关

 1     /// <summary>
 2     /// 隐藏敏感信息
 3     </summary>
 4     <param name="info">信息实体</param>
 5     <param name="left">左边保留的字符数 6     <param name="right">右边保留的字符数 7     <param name="basedOnLeft">当长度异常时，是否显示左边 
 8     <code>true</code>显示左边，false显示右边
 9     10     <returns></returns>
11     public static string HideSensitiveInfo(string info,int left,1)">int right,1)">bool basedOnLeft=true)
12     {
13         if (String.IsNullOrEmpty(info))
14         {
15             return "";
16         }
17         StringBuilder sbText = new StringBuilder();
18         int hiddenCharCount = info.Length - left - right;
19         if (hiddenCharCount > 020 21             string prefix = info.Substring(0,left),suffix = info.Substring(info.Length - right);
22             sbText.Append(prefix);
23             for (int i = 0; i < hiddenCharCount; i++24             {
25                 sbText.Append("*");
26             }
27             sbText.Append(suffix);
28 29         else
30 31              (basedOnLeft)
32 33                 if (info.Length > left && left > 34                 {
35                     sbText.Append(info.Substring(****36                 }
37                 38 39                     sbText.Append(info.Substring(1) + 40 41 42             43 44                 if (info.Length > right && right > 45 46                     sbText.Append(" + info.Substring(info.Length - right));
47 48                 49 50                     sbText.Append(" + info.Substring(info.Length - 1));
51 52 53 54         return sbText.ToString();
55     }

Method 1.2 : 中间的*的个数固定

10     string HideSensitiveInfo1(bool basedOnLeft = 11 12         13 14             15 16         StringBuilder sbText = 17         19 20             21 22             sbText.Append(23 25         27             29                 if (info.Length > left && left >31                     sbText.Append(info.Substring(37 38             39 40                 if (info.Length > right && right>42                     sbText.Append(48 50         51     }

 

Method 2 : “*”数量一定，设置为4个，按信息总长度的比例来取，默认左右各取1/3

信息<param name="sublen">信息总长与左子串（或右子串）的比例当长度异常时，是否显示左边，默认true，默认显示左边
 9     int sublen = 3,1)">10 11         13             15         if (sublen<=17             sublen = 318 int subLength = info.Length / sublen;
20         if (subLength > 0 && info.Length > (subLength*2) )
22              subLength);
return prefix + " + suffix;
string prefix = subLength > 0 ? info.Substring(30                 31 32             33 34                 string suffix = subLength > 0 ? info.Substring(info.Length-subLength) : info.Substring(info.Length-35                 "+suffix;
38     }

扩展

手机号 1

 隐藏手机号详情
<param name="phone">手机号左边保留字符数右边保留字符数 8     string HideTelDetails(string phone,1)">int left = int right = 4 9 10          HideSensitiveInfo(phone,left,right);
11     }

 

测试结果如下：

 

手机号 2

 HideSensitiveInfo1(phone,1)">11     }

 

测试结果如下：

 

邮件地址

 隐藏右键详情
<param name="email">邮件地址邮件头保留字符个数，默认值设置为3 7     string HideEmailDetails(string email,1)"> 8  9          (String.IsNullOrEmpty(email))
11             if (System.Text.RegularExpressions.Regex.IsMatch(email,1)">@"\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*"))//如果是邮件地址
int suffixLen =email.Length - email.LastIndexOf('@'16             return HideSensitiveInfo(email,suffixLen,1)">false17  HideSensitiveInfo(email);
22     }

 

测试结果如下：