asp.net Server.Transfer 直接输出HTML源代码的问题

今天在用.NET利用IHttpModel实现网站静态缓存的时候,不知道最后为什么用 Server.Transfer(html)的时候结果输出的是HTML的源代码。

贴上源代码

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[5];//待缓存的请求模板
            resUrlTemp[0] = "/model/modelsearch.aspx\\?clid=([\\d]+)&coid=([\\d]+)&bid=([\\d]+)&price=(.*)&model=(.*)&p=([\\d]+)&t=([0-2]{1,1})";
            resUrlTemp[1] = "/pic/imgsearch.aspx\\?clid=([\\d]+)&cbid=([\\d]+)&model=(.*)&p=([\\d]+)";
            resUrlTemp[2] = "/praise/PraiseSearch.aspx\\?clid=([\\d]+)&coid=([\\d]+)&model=(.*)&p=([\\d]+)";
            resUrlTemp[3] = "/price/sellerpricesearch.aspx\\?clid=([\\d]+)&coid=([\\d]+)&brand=([\\d]+)&price=(.*)&model=(.*)&p=([\\d]+)&t=([0-2]{1,1})";
            resUrlTemp[4] = "/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 = 0; 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 > 0)
                    {
                        //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 = 2;

                            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, 512);

                                    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()
        {
        }
    }
}

原帖地址:http://blog.csdn.net/mr_tanglin/article/details/6753771

我的问题是这样的,我的网站采用的UTF8编码

当这两个流采用gb2312的时候,Service.Transfer是可以正常显示HTMl的,但是页面乱码

  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, 512);  

但是当我采用UTF编码的时候,页面缓存没问题,但是Service.Transfer就只是显示源代码,不知道为什么。求解。

此贴用于记录,如果找到解决方案后,我会贴出来！