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Asp.net 2.0 自定义伪静态源码

根据微软官方伪静态UrlRewrite.dll源码,自己改写应用进项目中。

1、首先,我们写个用于HttpModule请求的类 RolesProvider

using System;using System.Text;using System.Web;using System.Web.Security;using System.Security.Principal;public class RolesProvider : IHttpModule{        //页面初始化        public void Init(HttpApplication context)        {            context.AuthorizeRequest += new EventHandler(this.BaseModuleRewriter_AuthorizeRequest);            context.AuthenticateRequest += new EventHandler(context_AuthenticateRequest);            //context.BeginRequest += new EventHandler(context_BeginRequest);            context.Error += new EventHandler(context_Error);        }                        /// <summary>        /// 伪静态处理        /// </summary>        /// <param name="sender"></param>        /// <param name="e"></param>        protected virtual void BaseModuleRewriter_AuthorizeRequest(object sender, EventArgs e)        {            HttpContext context = ((HttpApplication)sender).Context;            string host = context.Request.ServerVariables["HTTP_HOST"].ToLower(); //获取当前主机头            string requestPath = context.Request.Path.ToLower();      //当前请求路径 不带域名             /**这边也可以做301处理功能**/                        context.Trace.Write("ModuleRewriter", "Entering ModuleRewriter");                UtilsUrlRewrite.UrlRewrite(RewriterConfiguration.GetConfig("ConfigUrlRewrite", "ConfigUrlRewrite.config"), requestPath, context); //伪静态核心代码 详见下UtilsUrlRewrite.cs            context.Trace.Write("ModuleRewriter", "Exiting ModuleRewriter");        }                /// <summary>        /// 建立用户标识时        /// </summary>        void context_AuthenticateRequest(object sender, EventArgs e)        {        }                /// <summary>        /// 请求出错时        /// </summary>        /// <param name="sender"></param>        /// <param name="e"></param>        void context_Error(object sender, EventArgs e)        {            /*CmsSafe.UrlError();*/        }        public void Dispose()        {        }}

2、UtilsUrlRewrite.cs 伪静态处理核心代码

/**由于是参考官网例子,伪静态规则语法不变。以下代码可直接复制,设置下伪静态文件地址就可以。**/using System;using System.Web;using System.Web.Caching;using System.Collections;using System.Collections.Generic;using System.Text;using System.Configuration;using System.Xml;using System.Xml.Serialization;using System.Text.RegularExpressions;public class UtilsUrlRewrite{        public static void UrlRewrite(RewriterRuleCollection rules, string requestPath, HttpContext context)        {            for (int i = 0; i < rules.Count; i++)            {                string lookFor = "^" + UtilsUrlRewrite.ResolveUrl(context.Request.ApplicationPath, rules[i].LookFor) + "$";                Regex re = new Regex(lookFor, RegexOptions.IgnoreCase);                if (re.IsMatch(requestPath))                {                    string sendToUrl = UtilsUrlRewrite.ResolveUrl(context.Request.ApplicationPath, re.Replace(requestPath, rules[i].SendTo));                                       context.Trace.Write("ModuleRewriter", "Rewriting URL to " + sendToUrl);                    UtilsUrlRewrite.RewriteUrl(context, sendToUrl);                    break;                }            }        }        internal static void RewriteUrl(HttpContext context, string sendToUrl)        {            // see if we need to add any extra querystring information            if (context.Request.QueryString.Count > 0)            {                if (sendToUrl.IndexOf(?) != -1)                    sendToUrl += "&" + context.Request.QueryString.ToString();                else                    sendToUrl += "?" + context.Request.QueryString.ToString();            }            string queryString = String.Empty;            string sendToUrlLessQString = sendToUrl;            if (sendToUrl.IndexOf(?) > 0)            {                sendToUrlLessQString = sendToUrl.Substring(0, sendToUrl.IndexOf(?));                queryString = sendToUrl.Substring(sendToUrl.IndexOf(?) + 1);            }            context.RewritePath(sendToUrlLessQString, String.Empty, queryString);        }        internal static string ResolveUrl(string appPath, string url)        {            if (url.Length == 0 || url[0] != ~)                return url;            else            {                if (url.Length == 1)                    return appPath;                if (url[1] == / || url[1] == \\)                {                    if (appPath.Length > 1)                        return appPath + "/" + url.Substring(2);                    else                        return "/" + url.Substring(2);                }                else                {                    if (appPath.Length > 1)                        return appPath + "/" + url.Substring(1);                    else                        return appPath + url.Substring(1);                }            }        }    }    [Serializable()]    [XmlRoot("RewriterConfig")]    public class RewriterConfiguration    {        public static RewriterRuleCollection GetConfig(string cache, string filename)        {            if (HttpContext.Current.Cache[cache] == null)            {                RewriterRuleCollection rc = new RewriterRuleCollection();                RewriterRule r;                string filePath = UtilsString.MapPath("~/App_Data/" + filename); //伪静态文件地址                XmlDocument xd = new XmlDocument();                xd.Load(filePath);                XmlNodeList items = xd.DocumentElement.ChildNodes;                foreach (XmlNode item in items)                {                    if (item.HasChildNodes == true)                    {                        r = new RewriterRule();                        r.LookFor = item["LookFor"].InnerText;                        r.SendTo = item["SendTo"].InnerText;                        rc.Add(r);                    }                }                UtilsCache.AddCache(cache, rc, UtilsCache.GetCacheDependency(filePath));                return rc;            }            return (RewriterRuleCollection)HttpContext.Current.Cache[cache];        }    }    [Serializable()]    public class RewriterRule    {        private string lookFor, sendTo;        public string LookFor        {            get            {                return lookFor;            }            set            {                lookFor = value;            }        }        public string SendTo        {            get            {                return sendTo;            }            set            {                sendTo = value;            }        }    }    [Serializable()]    public class RewriterRuleCollection : CollectionBase    {        /// <summary>        /// Adds a new RewriterRule to the collection.        /// </summary>        /// <param name="r">A RewriterRule instance.</param>        public virtual void Add(RewriterRule r)        {            this.InnerList.Add(r);        }        /// <summary>        /// Gets or sets a RewriterRule at a specified ordinal index.        /// </summary>        public RewriterRule this[int index]        {            get            {                return (RewriterRule)this.InnerList[index];            }            set            {                this.InnerList[index] = value;            }        }    }}

 3、伪静态规则文件 ConfigUrlRewrite.config ,只列出有代表性的规则

<?xml version="1.0"?><RewriterConfig>    <RewriterRule>        <LookFor>~/404.(html|aspx)</LookFor>        <SendTo>~/default.aspx?s=404</SendTo>    </RewriterRule>    <RewriterRule>        <LookFor>~/([\w]+)-list([0-9]+).(html|aspx)</LookFor>        <SendTo>~/default.aspx?s=$1&amp;menuid=$2</SendTo>    </RewriterRule>    <RewriterRule>        <LookFor>~/([\w]+)-id([0-9]+).(html|aspx)</LookFor>        <SendTo>~/default.aspx?s=$1&amp;id=$2</SendTo>    </RewriterRule></RewriterConfig>

 4、在网站根目录web.config中注册HttpModule

<?xml version="1.0"?><!--     注意: 除了手动编辑此文件以外,您还可以使用     Web 管理工具来配置应用程序的设置。可以使用 Visual Studio 中的     “网站”->“Asp.Net 配置”选项。    设置和注释的完整列表在     machine.config.comments 中,该文件通常位于     \Windows\Microsoft.Net\Framework\v2.x\Config 中--><configuration>  <configSections />  <connectionStrings>    <add name="TechName" connectionString="莆田九九网络工作室" />    <add name="TechWebsite" connectionString="http://www.99wl.cn" />  </connectionStrings>  <system.web>    <!-- 看这 -->    <httpModules>      <add name="RolesProvider" type="RolesProvider"/>    </httpModules>    <globalization fileEncoding="utf-8" requestEncoding="utf-8" responseEncoding="utf-8" culture="zh-CN"/>    <!--             设置 compilation debug="true" 可将调试符号插入            已编译的页面中。但由于这会             影响性能,因此只在开发过程中将此值             设置为 true-->    <compilation debug="false"/>    <!--            通过 <authentication> 节可以配置 ASP.NET 用来             识别进入用户的            安全身份验证模式。                -->    <authentication mode="Forms">      <forms name="adminsCookieName" protection="All" timeout="720" requireSSL="false" cookieless="UseDeviceProfile"/>    </authentication>    <!--            如果在执行请求的过程中出现未处理的错误,            则通过 <customErrors> 节可以配置相应的处理步骤。具体说来,            开发人员通过该节可以配置            要显示的 html 错误页            以代替错误堆栈跟踪。                <customErrors mode="RemoteOnly" defaultRedirect="GenericErrorPage.htm">            <error statusCode="403" redirect="NoAccess.htm" />            <error statusCode="404" redirect="FileNotFound.htm" />        </customErrors>         -->  </system.web></configuration>

到这就可以实现自定义伪静态功能了,跟官方UrlRewrite.dll没什么区别,就是少引用dll文件,还有可以把规则写在自己的xml或config文件中,好用xml类去操作管理。IIS6应用没有问题,IIS7+版本HttpModule 暂未学习配置。

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Asp.net 2.0 自定义伪静态源码