ASP.net中怎么利用UrlRewrite实现防盗链功能-创新互联
ASP.net中怎么利用UrlRewrite实现防盗链功能,相信很多没有经验的人对此束手无策,为此本文总结了问题出现的原因和解决方法,通过这篇文章希望你能解决这个问题。
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1 username
说明:
CheckType:要求验证的类型(1:只验证合法的域名,2:只验证是否有cookies,3:同时验证域名与cookies)
CookiesName:要验证的cookies名称,可为空。
UrlPattern:请求的URL格式。
UrlReplace:当下载无效时转向的URL格式。
AllowHost:允许的来源域名。
Global.aspx中的配置:
void Application_BeginRequest(object sender, EventArgs e) { bool IsAllowDomain = false; bool IsLogin = false; string CookiesName = "UserName", AllowHost, ReferrerHost=""; int CheckType = 1; bool AllowDown = false; string[] AllowHostArr; string UrlPattern = "", UrlReplace = ""; string[] pattern, replace; string ConfigFile = ConfigurationManager.AppSettings["DownLoadConfig"]; if (ConfigFile != "") { try { System.Xml.XmlDataDocument XDConfig = new System.Xml.XmlDataDocument(); XDConfig.Load(AppDomain.CurrentDomain.BaseDirectory + @"/" + ConfigFile); if (XDConfig.SelectSingleNode("DownLoad/CheckType").InnerText != "") { CheckType = int.Parse(XDConfig.SelectSingleNode("DownLoad/CheckType").InnerText); } if (XDConfig.SelectSingleNode("DownLoad/CookiesName").InnerText != "") { CookiesName = XDConfig.SelectSingleNode("DownLoad/CookiesName").InnerText; } AllowHost = XDConfig.SelectSingleNode("DownLoad/AllowHost ").InnerText; AllowHostArr = AllowHost.Split('|'); UrlPattern = XDConfig.SelectSingleNode("DownLoad/UrlPattern").InnerText; UrlReplace = XDConfig.SelectSingleNode("DownLoad/UrlReplace").InnerText; pattern = UrlPattern.Split('@'); replace = UrlReplace.Split('@'); if (CookiesName == "") CookiesName = "UserName"; IsLogin = false.Equals(Request.Cookies[CookiesName] == null || Request.Cookies[CookiesName].Value == ""); if (Request.UrlReferrer != null) ReferrerHost = Request.UrlReferrer.Host.ToString(); if (AllowHostArr.Length < 1) { IsAllowDomain = true; } else { for (int HostI = 0; HostI < AllowHostArr.Length - 1; HostI++) { if (AllowHostArr[HostI].ToLower() == ReferrerHost.ToLower()) { IsAllowDomain = true; break; } } } switch (CheckType) { case 1: AllowDown = true.Equals(IsAllowDomain); break; case 2: AllowDown = IsLogin; break; case 3: AllowDown = true.Equals(IsAllowDomain && IsLogin); break; } if (AllowDown == false) { string oldUrl = HttpContext.Current.Request.RawUrl; string newUrl = oldUrl; for (int iii = 0; iii < pattern.Length; iii++) { if (Regex.IsMatch(oldUrl, pattern[iii], RegexOptions.IgnoreCase | RegexOptions.Compiled)) { newUrl = Regex.Replace(oldUrl, pattern[iii], replace[iii], RegexOptions.Compiled | RegexOptions.IgnoreCase); oldUrl = newUrl; } } this.Context.RewritePath(newUrl); } } catch { } } }
Web.Config中的配置:
IIS中的配置:
可执行文件填入:c:/windows/microsoft.net/framework/v2.0.50727/aspnet_isapi.dll(视实际情况变动,与.aspx的一样就成)
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