本文實例講述了ASP.NET網(wǎng)站防惡意刷新的Cookies與Session解決方法，是WEB程序設(shè)計中非常實用的技巧。分享給大家供大家參考。具體實現(xiàn)方法如下：

Session版實現(xiàn)方法：

public double time;public const int freetime = 1;//防刷冰凍時間間隔,當(dāng)前為1秒#region 防惡意刷新if (Session.SessionID == null){  Response.End();}else if (Session["sionid"] == null){  Session["sionid"] = Session.SessionID;}if (Session["last"] == null){  Session["last"] = DateTime.Now;}else{  DateTime thisTime = DateTime.Now;  DateTime lastTime = DateTime.Parse(Session["last"].ToString());  if (Session.SessionID == Session["sionid"].ToString()) Session["last"] = thisTime;  TimeSpan ts = thisTime - lastTime;  time = ts.TotalMilliseconds;  if (time < freetime * 500)  { warm_prompt();  }}#endregionpublic void warm_prompt(){    Response.Write("<table width='778' border='0' align='center' cellpadding='3' cellspacing='2' bgcolor='#009900' style='font-size: 14px; '>");    Response.Write(" <tr bgcolor='#FFFFFF'>");    Response.Write("  <td><img src='/newimages/logos.gif'></td>");    Response.Write("  <td bgcolor='#EEFFEE'為了保證您的訪問安全,請您 " + freetime + " 秒后<a href='" + Request.RawUrl + "' target='_self' style='color:#FF0000;'>點擊這里刷新</a>此頁面</td>");    Response.Write(" </tr>");    Response.Write("</table>");    Response.End();}

Cookies版實現(xiàn)方法：

public double time;public const int freetime = 2;#region 防惡意刷新string page;if (Request.Cookies["page"] == null){  page = "";}else{  page = HttpContext.Current.Request.Cookies["page"].Value.ToString(); //獲取cookie中存儲的url值 }string strThisPage = HttpContext.Current.Request.Url.PathAndQuery.ToString();//獲取當(dāng)前頁地址 DateTime LastTime = DateTime.Now;if (page.Equals(strThisPage))//如果cookie中的值和當(dāng)前頁相等，那么表示是刷新操作 {  TimeSpan ts = LastTime - DateTime.Parse(HttpContext.Current.Request.Cookies["time"].Value.ToString());  time = ts.Seconds;  if (time < freetime)  { warm_prompt();  }}else{  //執(zhí)行操作   Response.Cookies["page"].Value = strThisPage;  Response.Cookies["time"].Value = LastTime.ToString();}#endregionpublic void warm_prompt(){    Response.Write("<table width='778' border='0' align='center' cellpadding='3' cellspacing='2' bgcolor='#009900' style='font-size: 14px; '>");    Response.Write(" <tr bgcolor='#FFFFFF'>");    Response.Write("  <td><img src='/newimages/logos.gif'></td>");    Response.Write("  <td bgcolor='#EEFFEE'為了保證您的訪問安全,頁面將在2秒后將自動跳轉(zhuǎn)到您要訪問的內(nèi)容！</td>");    Response.Write(" </tr>");    Response.Write("</table>");    Response.Write("<meta http-equiv=/"refresh/" content=/"2/";URL=" + HttpContext.Current.Request.Cookies["page"].Value.ToString() + ">");    Response.End();}

相信本文所述對大家的ASP.NET程序設(shè)計有一定的借鑒價值。

AspNet技術(shù)：asp.net網(wǎng)站防惡意刷新的Cookies與Session解決方法，轉(zhuǎn)載需保留來源！

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