1：asp.net1.1中重写中可删节的问题！！！
如以下的正则表达式：
<Rules> <RewriterRule> <LookFors> <LookFor>~/(/d{4})/(/d{2})/.html</LookFor>---------<1> <LookFor>~/(/d{4})/(/d{2})/</LookFor>--------------<2> <LookFor>~/(/d{4})/(/d{2})</LookFor>-----------<3> <LookFor>~/(/d{4})/(/d{2})/index.html</LookFor>----<4> </LookFors> <SendTo>~/Pro.aspx?year=$1&month=$2</SendTo> </RewriterRule> </Rules>
其中的1,4可以正常映射到对应的页面
可2,3则会出现http404错误！！！
其原因在于IIS本身的处理流程，解决办法则是在网站自己重写404处理错误！！！
1：自定义处理404错误的URL（在IIS中配置,在web.config中的配置对重写无用）
2:在System.Web节中添加如下节:
<httpHandlers> <add verb="*" path="404.aspx" type="lt.Http404,lt"></add> </httpHandlers> <httpModules> <add type="lt.ReWriteModule,lt" name="ModuleRewriter" /> </httpModules>
源代码如下：
public class Http404:System.Web.IHttpHandler { public Http404() { // // TODO: 在此处添加构造函数逻辑 // } #region IHttpHandler 成员
public void ProcessRequest(System.Web.HttpContext context) { // TODO: 添加 Http404.ProcessRequest 实现 string errorPath=context.Request.RawUrl.Split(new char[]{';'})[1]; string appPath=context.Request.ApplicationPath; int ipos=errorPath.IndexOf(appPath);
string url=errorPath.Substring(ipos+appPath.Length );// if(!url.EndsWith("/"))// {// url+="/";// }// url+="index.html";// context.Response.Write(url);// context.RewritePath(url);
//context.Response.Write(url); url="~"+url; string newUrl =lt.ReWriteModule.GetUrl(context,url); //context.Response.Write(newUrl); if (newUrl != null) { //cxt.Response.Filter = new ResponseFilter(cxt.Response.Filter,cxt.Request.Path); context.Response.Write("请求的路径:" + url); context.Response.Write("<BR>"); context.Response.Write("转向的目的URL：" + newUrl); context.Response.Write("<BR>"); context.RewritePath(newUrl); } else { context.Response.Write("你请求的资源不存在！！"); context.Response.End (); } }
public bool IsReusable { get { // TODO: 添加 Http404.IsReusable getter 实现 return false; } }
///配置节处理中的httpModule如下:
public class ReWriteModule:System.Web.IHttpModule { public ReWriteModule() { // // TODO: 在此处添加构造函数逻辑 // } #region IHttpModule 成员
public void Init(System.Web.HttpApplication context) { // TODO: 添加 ReWriteModule.Init 实现 context.BeginRequest+=new EventHandler(this.ReWrite); } private static System.Xml.XmlDocument ruleDoc = null; private static System.Xml.XmlDocument GetRuleConfig(System.Web.HttpContext app) { if (ruleDoc == null) { ruleDoc = new System.Xml.XmlDocument(); ruleDoc.Load(app.Server.MapPath("~/rule.xml")); } return ruleDoc; } public static string GetUrl(System.Web.HttpContext cxt,string path) { System.Xml.XmlDocument doc = GetRuleConfig(cxt); System.Xml.XmlNodeList lst= doc.GetElementsByTagName("RewriterRule"); string pat=""; foreach (System.Xml.XmlNode nd in lst) { System.Xml.XmlNodeList sub = nd.ChildNodes[0].ChildNodes; foreach(System.Xml.XmlNode chk in sub) { pat = "^" + chk.InnerText+"$"; System.Text.RegularExpressions.Regex reg = new System.Text.RegularExpressions.Regex(pat, System.Text.RegularExpressions.RegexOptions.Compiled | System.Text.RegularExpressions.RegexOptions.IgnoreCase); if(reg.IsMatch(path)) { return reg.Replace(path, nd.ChildNodes[1].InnerText); } } } return null;
} private void ReWrite(object sender,EventArgs e) { System.Web.HttpContext cxt =(sender as System.Web.HttpApplication).Context; if (cxt.Request.ContentType != "image/pjpeg") { string type = cxt.Request.ContentType.ToLower(); string path = cxt.Request.Path; string apppath = cxt.Request.ApplicationPath; path = path.Remove(0, apppath.Length); path = "~" + path; string newUrl = GetUrl(cxt, path.TrimEnd().TrimStart()); if (newUrl != null) { //cxt.Response.Filter = new ResponseFilter(cxt.Response.Filter,cxt.Request.Path); cxt.Response.Write("请求的路径:" + path); cxt.Response.Write("<BR>"); cxt.Response.Write("转向的目的URL：" + newUrl); cxt.Response.Write("<BR>"); cxt.RewritePath(newUrl); } //else //{ // cxt.Response.Write(cxt.Request.Path + "<BR>"); // cxt.Response.Write("你请求的资源不存在或无权访问！"); // cxt.Response.Flush(); // cxt.Response.End(); //} } } public void Dispose() { // TODO: 添加 ReWriteModule.Dispose 实现 }
#endregion }
---------rule.xml的配置如下:
<?xml version="1.0" encoding="utf-8" ?><Rules> <RewriterRule> <LookFors> <LookFor>~/(/d{4})/(/d{2})/.html</LookFor> <LookFor>~/(/d{4})/(/d{2})/</LookFor> <LookFor>~/(/d{4})/(/d{2})</LookFor> <LookFor>~/(/d{4})/(/d{2})/index.html</LookFor> </LookFors> <SendTo>~/Pro.aspx?year=$1&month=$2</SendTo> </RewriterRule> <RewriterRule> <LookFors> <LookFor>~/Pro.aspx?year=(/d{4})&month=(/d{2})</LookFor> </LookFors> <SendTo>~/(/d{4})/(/d{2})/.html</SendTo> </RewriterRule> <RewriterRule> <LookFors> <LookFor>~/pc</LookFor> </LookFors> <SendTo>~/Test2.aspx</SendTo> </RewriterRule> <RewriterRule> <LookFors> <LookFor>~/index.html</LookFor> <LookFor>~/default.html</LookFor> </LookFors> <SendTo>~/default.aspx</SendTo> </RewriterRule></Rules>
