[转] 动态页面静态化之一
下面是一个页面转换的类,该类通过静态函数Changfile()来实现,然后配合IIS Rewrite实现动态页面到静态页面的转换,并能主动控制页面刷新。
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Text;
using System.IO;
/// <summary>
/// Summary description for HtmlProxy
/// </summary>
public class HtmlProxy
{
public HtmlProxy()
{
}
public static bool ChangeFile(int id)
{
string filename = HttpContext.Current.Server.MapPath("Post_" + id + ".html");
//尝试读取已有文件
Stream st = GetFileStream(filename);
//如果文件存在并且读取成功
if (st != null)
{
using (st)
{
StreamToStream(st, HttpContext.Current.Response.OutputStream);
return true;
//Response.End();
}
}
else
{
StringWriter sw = new StringWriter();
HttpContext.Current.Server.Execute("ForumDetail.aspx?PID=" + id, sw);
string content = sw.ToString();
//写进文件
try
{
using (FileStream fs = new FileStream(filename, FileMode.Create, FileAccess.Write, FileShare.Write))
{
using (StreamWriter stw = new StreamWriter(fs, HttpContext.Current.Response.ContentEncoding))
{
stw.Write(content);
}
}
return true;
}
catch
{
return false;
}
}
}
private static Stream GetFileStream(string filename)
{
try
{
DateTime dt = File.GetLastWriteTime(filename);
TimeSpan ts = dt - DateTime.Now;
if (ts.TotalHours >1)
{
//一小时后过期
return null;
}
return new FileStream(filename, FileMode.Open, FileAccess.Read, FileShare.Read);
}
catch
{
return null;
}
}
static public void StreamToStream(Stream src, Stream dst)
{
byte[] buf = new byte[4096];
while (true)
{
int c = src.Read(buf, 0, buf.Length);
if (c == 0)
return;
dst.Write(buf, 0, c);
}
}
}
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Text;
using System.IO;
/// <summary>
/// Summary description for HtmlProxy
/// </summary>
public class HtmlProxy
{
public HtmlProxy()
{
}
public static bool ChangeFile(int id)
{
string filename = HttpContext.Current.Server.MapPath("Post_" + id + ".html");
//尝试读取已有文件
Stream st = GetFileStream(filename);
//如果文件存在并且读取成功
if (st != null)
{
using (st)
{
StreamToStream(st, HttpContext.Current.Response.OutputStream);
return true;
//Response.End();
}
}
else
{
StringWriter sw = new StringWriter();
HttpContext.Current.Server.Execute("ForumDetail.aspx?PID=" + id, sw);
string content = sw.ToString();
//写进文件
try
{
using (FileStream fs = new FileStream(filename, FileMode.Create, FileAccess.Write, FileShare.Write))
{
using (StreamWriter stw = new StreamWriter(fs, HttpContext.Current.Response.ContentEncoding))
{
stw.Write(content);
}
}
return true;
}
catch
{
return false;
}
}
}
private static Stream GetFileStream(string filename)
{
try
{
DateTime dt = File.GetLastWriteTime(filename);
TimeSpan ts = dt - DateTime.Now;
if (ts.TotalHours >1)
{
//一小时后过期
return null;
}
return new FileStream(filename, FileMode.Open, FileAccess.Read, FileShare.Read);
}
catch
{
return null;
}
}
static public void StreamToStream(Stream src, Stream dst)
{
byte[] buf = new byte[4096];
while (true)
{
int c = src.Read(buf, 0, buf.Length);
if (c == 0)
return;
dst.Write(buf, 0, c);
}
}
}
代码
//在页面文件中,ForURL.aspx的后台代码如下:
protected void Page_Load(object sender, EventArgs e)
{
try
{
int id = int.Parse(Request.QueryString["PID"]);
if(HtmlProxy.ChangeFile(id))
{
Response.Redirect("Post_" + id + ".html");
}
else
{
Response.Write("文件读取错误!");
}
}
catch { }
}
protected void Page_Load(object sender, EventArgs e)
{
try
{
int id = int.Parse(Request.QueryString["PID"]);
if(HtmlProxy.ChangeFile(id))
{
Response.Redirect("Post_" + id + ".html");
}
else
{
Response.Write("文件读取错误!");
}
}
catch { }
}