利用Ihttpmodel实现网站缓存,解决Server.Transfer 直接输出HTML源代码的问题

using System;
using System.Web;
using System.Text.RegularExpressions;
using System.IO;
using System.Configuration;
using System.Collections.Generic;
namespace Product
{
public class ProductModule : IHttpModule
{
public void Init(HttpApplication application)
{
application.BeginRequest += (new EventHandler(this.Application_BeginRequest));//请求开始
application.EndRequest += (new EventHandler(this.Application_EndRequest));//请求结束
}
private void Application_BeginRequest(Object source, EventArgs e)
{
HttpApplication Application = (HttpApplication)source;
CheckUrl(Application);
}
private void Application_EndRequest(Object source, EventArgs e)
{
//HttpApplication Application = (HttpApplication)source;
//Application.Response.Write("test");
}
private void CheckUrl(HttpApplication application)
{
if (application.Request.RequestType.ToUpper() == "POST" || application.Request.UserAgent.ToLower() == "product")
{
return;
} string[] resUrlTemp = new string[];//待缓存的请求模板
resUrlTemp[] = "/model/modelsearch.aspx\\?clid=([\\d]+)&coid=([\\d]+)&bid=([\\d]+)&price=(.*)&model=(.*)&p=([\\d]+)&t=([0-2]{1,1})";
resUrlTemp[] = "/pic/imgsearch.aspx\\?clid=([\\d]+)&cbid=([\\d]+)&model=(.*)&p=([\\d]+)";
resUrlTemp[] = "/praise/PraiseSearch.aspx\\?clid=([\\d]+)&coid=([\\d]+)&model=(.*)&p=([\\d]+)";
resUrlTemp[] = "/price/sellerpricesearch.aspx\\?clid=([\\d]+)&coid=([\\d]+)&brand=([\\d]+)&price=(.*)&model=(.*)&p=([\\d]+)&t=([0-2]{1,1})";
resUrlTemp[] = "/dealer/sellersearch.aspx\\?pve=([\\d]+)&city=([\\d]+)&type=([\\d]+)&seller=(.*)&bid=([\\d]+)&model=(.*)&pagesize=([\\d]+)&p=([\\d]+)"; string reqUrl = application.Context.Request.Url.PathAndQuery.ToLower();//请求动态路径 bool success = false;
for (int i = ; i < resUrlTemp.Length;i++ )
{
if (!success)
{
Regex reg = new Regex(resUrlTemp[i]);//匹配当前请求是否需要缓存
MatchCollection mc = reg.Matches(reqUrl);
if (mc.Count > )
{
//静态页命名使用当前请求路径MD5加密命名
string PyReUrl = ConfigurationManager.ConnectionStrings["WebPhysicsUrl"].ConnectionString + "/Cache/" + i + "/" + System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(reqUrl, "MD5") + ".html"; FileInfo fi = new FileInfo(PyReUrl);//判断是否缓存
if (!fi.Exists)
{
//缓存页面
string WebUrl = ConfigurationManager.ConnectionStrings["WebUrl"].ConnectionString;
System.Net.HttpWebRequest Request = (System.Net.HttpWebRequest)System.Net.HttpWebRequest.Create(WebUrl + reqUrl);//Post请求当前页
Request.Method = "GET";
Request.Accept = "*/*";
Request.UserAgent = "Product";
Request.AllowAutoRedirect = true;
Request.MaximumAutomaticRedirections = ; System.Net.HttpWebResponse Response = null;
try
{
Response = (System.Net.HttpWebResponse)Request.GetResponse();//获得响应
}
catch(Exception ex)
{
application.Response.Write("Response Error"+ex.Message);
}
if (Response != null)
{
System.IO.Stream strm = Response.GetResponseStream();
System.IO.StreamReader sr = new System.IO.StreamReader(strm, System.Text.Encoding.GetEncoding("gb2312")); StreamWriter Sw = null;
try
{
if (!Directory.Exists(Directory.GetParent(PyReUrl).FullName))
Directory.CreateDirectory(Directory.GetParent(PyReUrl).FullName); FileStream Fs = new FileStream(PyReUrl, FileMode.Create, FileAccess.Write, FileShare.Read);
Sw = new StreamWriter(Fs, System.Text.Encoding.Default, ); Sw.Write(sr.ReadToEnd());//写入 success = true;
}
catch(Exception ex)
{
Sw.Close();
application.Response.Write("Writer Error"+ex.Message);
} sr.Close();
Sw.Close();
Response.Close();
}
}
else
{
//application.Response.Redirect(PyReUrl);//链接到静态页面 浏览器请求路径不变,不会影响收录
application.Server.Transfer("/Cache/" + i + "/" + System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(reqUrl, "MD5") + ".html");
}
}
}
} }
public void Dispose()
{
}
}
}

System.IO.Stream strm = Response.GetResponseStream();
System.IO.StreamReader sr = new System.IO.StreamReader(strm, System.Text.Encoding.GetEncoding("gb2312"));

FileStream Fs = new FileStream(PyReUrl, FileMode.Create, FileAccess.Write, FileShare.Read);
Sw = new StreamWriter(Fs, System.Text.Encoding.Default, );

application.Response.Write(File.ReadAllText(application.Server.MapPath("/qq534550354/" + i + "/" + System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(reqUrl, "MD5") + ".html")));
application.Response.End();