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The author:(作者)归海一刀published in(发表于) 2014/1/30 1:09:18 利用UrlRewrite，asp.net动态生成htm页面_[Asp.Net教程]
前段时间做项目，一直都在寻找一种动态生成htm页面的方法，要求配置简单，和项目无关。功夫不负有心人，终于被我找到了，只需要在web.config中进行简单配置，就可以达到动态生成静态页面的效果，同时又不影响Url重定向。web.config中需要注意的配置节为、、、，在这些配置节里边都有注释，容易看懂。
Static ~/Default\.aspx ~/Default.htm Dynamic ~/List\.aspx ~/Show.aspx
两个关键的类是ModuleRewriter和RewriterFactoryHandlerModuleRewriter类用于Url重定向，代码如下：ModuleRewriterusing System;using System.Text.RegularExpressions;using System.Configuration;using URLRewriter.Config;using System.Data;using System.Web;using System.Web.UI;
namespace URLRewriter{ /**//// /// Provides a rewriting HttpModule. /// public class ModuleRewriter : BaseModuleRewriter { /**//// /// This method is called during the module's BeginRequest event. /// /// The RawUrl being requested (includes path and querystring). /// The HttpApplication instance. protected override void Rewrite(string requestedPath, System.Web.HttpApplication app) { //只对文件后缀为aspx页面有效 if (requestedPath.IndexOf(".aspx") != -1) { HttpContext httpContext = app.Context;
// get the configuration rules RewriterRuleCollection rules = RewriterConfiguration.GetConfig().Rules;
// iterate through each rule for (int i = 0; i < rules.Count; i++) { // get the pattern to look for, and Resolve the Url (convert ~ into the appropriate directory) string lookFor = "^" + RewriterUtils.ResolveUrl(httpContext.Request.ApplicationPath, rules[i].LookFor) + "";
// Create a regex (note that IgnoreCase is set) Regex re = new Regex(lookFor, RegexOptions.IgnoreCase);
// See if a match is found if (re.IsMatch(requestedPath)) { //aspx页面重定向到htm页面且http数据传输方式为“GET” if (rules[i].Type == WebType.Static && app.Context.Request.RequestType == "GET") { //静态页面路径 string htmlWeb = RewriterUtils.ResolveUrl(httpContext.Request.ApplicationPath, rules[i].SendTo); //静态页面的最后修改时间 DateTime dt = System.IO.File.GetLastWriteTime(httpContext.Server.MapPath(htmlWeb)); //当前时间和静态页面生成时间对比，如果时间小于一个小时，重定向到静态页面 if (DateTime.Compare(DateTime.Now.AddHours(-1), dt) <= 0) { requestedPath = htmlWeb; } } else { requestedPath = rules[i].SendTo; }
// Rewrite the URL RewriterUtils.RewriteUrl(httpContext, requestedPath); break; // exit the for loop } } } }
}}CreateHtmFactoryHandler类用于生成静态页面，代码如下：CreateHtmFactoryHandlerusing System;using System.IO;using System.Web.UI;using System.Web;using URLRewriter.Config;using System.Configuration;using System.Text.RegularExpressions;
namespace URLRewriter{ /**//// /// 依据web.config配置信息，生成静态页面 /// public class CreateHtmFactoryHandler : IHttpHandlerFactory { /**//// /// /// /// HttpContext 类的实例，它提供对用于为 HTTP 请求提供服务的内部服务器对象（如 Request、Response、Session 和 Server）的引用 /// 客户端使用的 HTTP 数据传输方法（GET 或 POST） /// 所请求资源的 RawUrl。 /// 所请求资源的 PhysicalApplicationPath /// 返回实现 IHttpHandler 接口的类的实例 public virtual IHttpHandler GetHandler(HttpContext context, string requestType, string url, string pathTranslated) { if (requestType == "GET") { // get the configuration rules RewriterRuleCollection rules = RewriterConfiguration.GetConfig().Rules;
// iterate through each rule for (int i = 0; i < rules.Count; i++) { // get the pattern to look for, and Resolve the Url (convert ~ into the appropriate directory) string lookFor = "^" + RewriterUtils.ResolveUrl(context.Request.ApplicationPath, rules[i].LookFor) + "";
// See if a match is found if (re.IsMatch(url) && rules[i].Type == WebType.Static) { //得到要生成的静态页面的物理路径 string physicsWeb = context.Server.MapPath(RewriterUtils.ResolveUrl(context.Request.ApplicationPath, rules[i].SendTo)); //设定Response筛选器 context.Response.Filter = new ResponseFilter(context.Response.Filter, physicsWeb); break; } } } //得到编译实例 return PageParser.GetCompiledPageInstance(url, pathTranslated, context); }
public virtual void ReleaseHandler(IHttpHandler handler) { } }}
以上是两个主要的类，还有一些辅助的类，我把测试项目附上，里边有源代码和示例。点击这里下载：源代码和示例声明一下，我是在修改一个开源的项目（UrlRewrite）来实现上述功能。
来源：http://www.cnblogs.com/fengfeng
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