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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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