45 lines
1.2 KiB
C#
45 lines
1.2 KiB
C#
using NPOI.SS.Formula.Functions;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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namespace IRaCIS.Core.Application.Helper
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{
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public static class EmailMaskHelper
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{
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//显示位数：3分之2的位数，向上取整
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//取哪几个个值：最后一位和前面几位
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//其他：3个***。
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//比如：hlj23@126.com
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//为：hlj***3@126.com
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//he@126.com
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//为：h*** e@126.com
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public static string MaskEmail(string email)
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{
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// 找到 "@" 符号的位置
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int atIndex = email.IndexOf('@');
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string visiblePartBefore = email.Substring(0, atIndex);
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string afterAt = email.Substring(atIndex + 1);
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int visibleLength = (int)Math.Ceiling((double)visiblePartBefore.Length * 2 / 3);
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// 替换中间两位字符为星号
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string hiddenPartBeforeAt = visiblePartBefore.Substring(0, visibleLength - 1) + "***" + visiblePartBefore.Last();
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// 组合隐藏和可见部分
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string hiddenEmail = hiddenPartBeforeAt + "@" + afterAt;
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return hiddenEmail;
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}
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}
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}
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