C#将隐私信息(银行账户，身份证号码)中间部分特殊字符替换成*

大家在银行交易某些业务时，都可以看到无论是身份证、银行账号中间部分都是用*号替换的，下面小编把代码整理如下：

/// <summary>
/// 将传入的字符串中间部分字符替换成特殊字符
/// </summary>
/// <param name="value">需要替换的字符串</param>
/// <param name="startLen">前保留长度</param>
/// <param name="endLen">尾保留长度</param>
/// <param name="replaceChar">特殊字符</param>
/// <returns>被特殊字符替换的字符串</returns>
private static string ReplaceWithSpecialChar(string value, int startLen = 4, int endLen = 4, char specialChar = '*')
{
try
{
 int lenth = value.Length - startLen - endLen;
 string replaceStr = value.Substring(startLen, lenth);
 string specialStr = string.Empty;
 for (int i = 0; i < replaceStr.Length; i++)
 {
  specialStr += specialChar;
 }
 value = value.Replace(replaceStr, specialStr);
}
catch (Exception)
{
 throw;
}
return value;
}

效果图展示如下：

ReplaceWithSpecialChar("柯小呆", 1, 0,'*') -->Result: 柯*呆
ReplaceWithSpecialChar("622212345678485") -->Result: 6222*******8485
ReplaceWithSpecialChar("622212345678485", 4 , 4 , '*') -->Result: 6222*******8485

注：如果传入的startLen/endLen 超过字符串长度，将抛出下标越界异常

C#实现参数隐私代码

using System;using System.Collections;using System.ComponentModel;using System.Drawing;using System.Web;using System.Web.SessionState;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.HtmlControls;using System.IO;using System.Text;using System.Text.RegularExpressions;using System.Data.SqlClient;using System.Configuration;//导入自定义的类库using _3Layer.DataLayer.DataCommon;using _3Layer.DataLayer.DataCommon.DataAccess;using Library.ClassLibrary.Crypt.DES;namespace CHONGCHONG.XMLpublic class RenderingXML : System.Web.UI.Page{/// <summary>/// 从数据库预生成XML数据源/// </summary>private void PreRenderXML(){string strSQL = "select语句略去........................;myDataLayer.Open();RenderingXml="<?xml version='1.0' encoding='gb2312'?>\r\n";RenderingXml+="<xml>\r\n";try{ System.Data.SqlClient.SqlDataReader myDR = (SqlDataReader)myDataLayer.ExecuteReader( strSQL );while(myDR.Read()){RenderingXml+="<TreeNode id='"+myDR["BoardID"]+"'>\r\n";RenderingXml+="<NodeText>"+myDR["BoardName"]+"</NodeText>\r\n";RenderingXml+="<title>"+myDR["Title"]+"</title>\r\n";RenderingXml+="<NodeUrl>"+EncodeHTML( EncodeParameter( myDR["Link"].ToString() ) )+"</NodeUrl>\r\n";RenderingXml+="<child>"+myDR["children"]+"</child>\r\n";RenderingXml+="<target>"+myDR["Target"]+"</target>\r\n";RenderingXml+="</TreeNode>\r\n";}}catch(System.Data.SqlClient.SqlException ee){return ;}finally{myDataLayer.Close() ; }RenderingXml+="</xml>";byte[] bytResult = Encoding.Default.GetBytes( RenderingXml ) ;Response.ContentType = "text/xml" ;Response.BinaryWrite( bytResult ) ;} /// <summary>/// Description:加密路径参数/// </summary>/// <param name="sourParameter"></param>/// <returns></returns>private string EncodeParameter( string sourParameter ){string startString = String.Empty ;string endString = String.Empty ; StringBuilder destParameter = new StringBuilder() ;if( sourParameter == null || sourParameter.Equals("") ){destParameter.Append( String.Empty ).ToString() ;}else{//开始分析路径里的?字符if( sourParameter.IndexOf("?")<0 ){destParameter.Append( sourParameter ).ToString() ;}else{//以?号分割路径string[] paramPath = sourParameter.Split( new char[]{'?'} ) ;startString = paramPath[0].ToString() ;endString = paramPath[1].ToString() ;//开始分析路径里的&字符if(sourParameter.IndexOf("&")<0){//只有一个参数,用=号分割,直接把NameValue进行Des加密string[] paramNameValue = endString.Split( new char[]{'='} ) ;string paramName = myDES.Encrypt( paramNameValue[0].ToString() ,myDESKey ) ;string paramValue = myDES.Encrypt( paramNameValue[1].ToString() ,myDESKey ) ;destParameter.Append( startString ).Append("?").Append( paramName ).Append("=").Append( paramValue ) ;}else{//有多个参数,以&号分割?号后面的路径string[] paramJoin = endString.Split( new char[]{'&'} ) ;destParameter.Append( startString ).Append("?").Append( EncoderNameValue( paramJoin ) ) .ToString() ;}}}return destParameter.ToString() ;} /// <summary>/// Description:加密路径里的NameValue参数/// </summary>/// <param name="sourNameValue"></param>/// <returns></returns>private string EncoderNameValue( string[] sourNameValue ){string[] paramNameValue ;string paramName ;string paramValue ;StringBuilder sb = new StringBuilder() ;for( int i = 0 ; i <= sourNameValue.Length-1 ; i++ ){//以＝号分割每个NameValue参数paramNameValue = sourNameValue[i].Split( new char[]{'='} ) ;//开始对NameValue加密paramName = myDES.Encrypt( paramNameValue[0].ToString() ,myDESKey ) ;paramValue = myDES.Encrypt( paramNameValue[1].ToString() ,myDESKey ) ;//存储加密后的路径字符串sb.Append( paramName ).Append("=").Append( paramValue ) ;//是否最后一个NameValue参数，若不是在路基里添加&参数连接符if( i<sourNameValue.Length ){sb.Append("&") ;}}return sb.ToString() ;}}

以上内容就是C#将隐私信息(银行账户，身份证号码)中间部分特殊字符替换成*的全部内容，希望大家喜欢。