利用Ihttpmodel实现网站缓存,解决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() { } } }
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！
个人解决方案:
个人觉得很误解,问了好多人,都没有遇到过这种情况,不知道是不是只有我一个人遇到过。。。。。。。
说下个人的解决办法把。
上代码
application.Response.Write(File.ReadAllText(application.Server.MapPath("/cache/" + i + "/" + System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(reqUrl, "MD5") + ".html"))); application.Response.End();
我首先读取缓存文件的内容,然后用write去写,暂时就这样吧。以后如果有好的解决方案了，在做修改!
