HideSensitiveInfo隐藏敏感信息-邮件101****@qq.com_隐藏敏感信息英文-优快云博客

本文介绍了一种用于隐藏敏感信息的方法，包括电子邮件地址等个人信息的处理技术。通过使用字符串操作和正则表达式，该方法能够有效地保护个人隐私，避免信息泄露。

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Web;
namespace .Common.Helper
{
public static class HideSensitiveInfoHelper
{
///
/// 隐藏敏感信息
///
/// 信息实体
/// 左边保留的字符数
/// 右边保留的字符数
/// 当长度异常时，是否显示左边
///
public static string HideSensitiveInfo(this string info, int left, int right, bool basedOnLeft = true)
{
if (String.IsNullOrEmpty(info))
{
return “”;
}
StringBuilder sbText = new StringBuilder();
int hiddenCharCount = info.Length - left - right;
if (hiddenCharCount > 0)
{
string prefix = info.Substring(0, left), suffix = info.Substring(info.Length - right);
sbText.Append(prefix);
for (int i = 0; i < hiddenCharCount; i++)
{
sbText.Append("");
}
sbText.Append(suffix);
}
else
{
if (basedOnLeft)
{
if (info.Length > left && left > 0)
{
sbText.Append(info.Substring(0, left) + "");
}
else
{
sbText.Append(info.Substring(0, 1) + "");
}
}
else
{
if (info.Length > right && right > 0)
{
sbText.Append("" + info.Substring(info.Length - right));
}
else
{
sbText.Append("" + info.Substring(info.Length - 1));
}
}
}
return sbText.ToString();
}
///
/// 隐藏敏感信息
///
/// 信息
/// 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
/// true显示左边，false显示右边
///
public static string HideSensitiveInfo(this string info, int sublen = 3, bool basedOnLeft = true)
{
if (String.IsNullOrEmpty(info))
{
return “”;
}
if (sublen <= 1)
{
sublen = 3;
}
int subLength = info.Length / sublen;
if (subLength > 0 && info.Length > (subLength * 2))
{
string prefix = info.Substring(0, subLength), suffix = info.Substring(info.Length - subLength);
return prefix + "" + suffix;
}
else
{
if (basedOnLeft)
{
string prefix = subLength > 0 ? info.Substring(0, subLength) : info.Substring(0, 1);
return prefix + "";
}
else
{
string suffix = subLength > 0 ? info.Substring(info.Length - subLength) : info.Substring(info.Length - 1);
return "" + suffix;
}
}
}
///
/// 隐藏邮件详情
///
/// 邮件地址
/// 邮件头保留字符个数，默认值设置为3
///
public static string HideEmailDetails(this string email, int left = 3)
{
if (String.IsNullOrEmpty(email))
{
return “”;
}
if (System.Text.RegularExpressions.Regex.IsMatch(email, @"\w+([-+.]\w+)@\w+([-.]\w+).\w+([-.]\w+)*"))//如果是邮件地址
{
int suffixLen = email.Length - email.LastIndexOf(’@’);
return HideSensitiveInfo(email, left, suffixLen, false);
}
else
{
return HideSensitiveInfo(email);
}
}
}
}