ASP.NET 自定义URL重写 分类： ASP.NET 2014-10-31 16:05 174人阅读 评论(0) 收藏

一.功能说明：

可以解决类似 http://****/news 情形，Url路径支持正则匹配。

二.操作步骤：

1.增加URL重写模块：

using System;

using System.IO;

using System.Text.RegularExpressions;

using System.Web;

using System.Xml;

/// <summary>

/// URL重写Module

/// </summary>

public class UrlRewriteModule : IHttpModule

{

    #region IHttpModule Members

    public virtual void Init(HttpApplication context)

    {

        context.BeginRequest += ApplicationBeginRequest;

    } 

    public virtual void Dispose()

    {

    }

    #endregion

    public bool IsExcludedPath(string relUrl)

    {

        string fileExt = Path.GetExtension(relUrl);

        if (!string.IsNullOrEmpty(fileExt)

            && (fileExt.ToLower() == ".axd" ||

            fileExt.ToLower() == ".jpg" ||

            fileExt.ToLower() == ".png" ||

            fileExt.ToLower() == ".gif" ||

            fileExt.ToLower() == ".swf" ||

            fileExt.ToLower() == ".bmp"

            ))

        {

            return true;

        }

        return false;

    }

    /// <summary>

    /// 
 

    /// </summary>

    /// <param name="source"></param>

    /// <param name="e"></param>

    public void ApplicationBeginRequest(object source, EventArgs e)

    {

        var application = (HttpApplication)source;

        HttpContext context = application.Context;

        try

        {

            string path = context.Request.Path;

            string file = Path.GetFileName(path);

            if (IsExcludedPath(path))

            {

                return;

            }

            if (file != null && HttpContext.Current != null)

            {

                string rewriteConfig = HttpContext.Current.Server.MapPath("~/Config/RewriterConfig.config");

                if (File.Exists(rewriteConfig))

                {

                    var xml = new XmlDocument();

                    xml.Load(rewriteConfig);

                    XmlNodeList rules = xml.SelectNodes("RewriterConfig/Rules/RewriterRule");

                    if (rules != null)

                    {

                        foreach (XmlNode rule in rules)

                        {

                            string lookFor = "";

                            string sendTo = "";

                            XmlNode lookForNode = rule.SelectSingleNode("LookFor");

                            if (lookForNode != null)

                            {

                                lookFor = lookForNode.InnerText;

                            }

                            XmlNode sendToNode = rule.SelectSingleNode("SendTo");

                            if (sendToNode != null)

                            {

                                sendTo = sendToNode.InnerText;

                            }

                            if (!string.IsNullOrEmpty(lookFor) && !string.IsNullOrEmpty(sendTo))

                            {

                                string regeRule = Regex.Escape(lookFor);

                                var regex = new Regex("^(?i)" + regeRule + "$", RegexOptions.Compiled);

                                //匹配无后缀时路径

                                if (string.IsNullOrEmpty(file))

                                {

                                    if (context.Request.ApplicationPath != null)

                                    {

                                        var subPath = path.Substring(context.Request.ApplicationPath.Length).TrimStart('/').TrimEnd('/');

                                        if (regex.Match(subPath).Success)

                                        {

                                            context.RewritePath(Path.Combine(context.Request.ApplicationPath, sendTo));

                                            break;

                                        }

                                    }

                                }

                                else

                                {

                                    if (regex.Match(file).Success)

                                    {

                                        context.RewritePath(sendTo);

                                        break;

                                    }

                                }

                            }

                        }

                    }

                }

            }

        }

        catch (Exception ex)

        {

            context.Response.Clear();

            context.Response.Write(ex.Message);

            context.Response.End();

        }

    }

}

2.增加Url重写配置，放到网站根目录下Config文件夹下：~/Config/RewriterConfig.config

<?xml version="1.0"?>

<RewriterConfig>

    <Rules>

        <RewriterRule>

            <LookFor>floor</LookFor>

            <SendTo>index_floor.html</SendTo>

        </RewriterRule>

        <RewriterRule>

            <LookFor>door</LookFor>

            <SendTo>about/index_292.html</SendTo>

        </RewriterRule>

        <RewriterRule>

            <LookFor>kolani</LookFor>

            <SendTo>index_kolani.html</SendTo>

        </RewriterRule>

        <RewriterRule>

            <LookFor>nature</LookFor>

            <SendTo>index_nature.html</SendTo>

        </RewriterRule>

        <RewriterRule>

            <LookFor>mobile</LookFor>

            <SendTo>index_mobile.html</SendTo>

        </RewriterRule>

    </Rules>

</RewriterConfig>

3.在webconfig里注册HttpModule；注意有2个地方需要处理

集成模式下：

<system.webServer>

    <modules>

        <!--Url重写-->

         <add name="UrlRewriteModule" type="UrlRewriteModule" />

经典模式：在config/HttpModules.config里

<httpModules> 

    <!--Url重写-->

    <add name="UrlRewriteModule" type="UrlRewriteModule" />

4.如果是无后缀路径，比如/news，IIS6时需在IIS上增加通配符配置；

实际使用过程中，可能需要您的匹配规则进行相应的修改，代码仅供参考。

 

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