關於在Asp.Net中動態頁面轉靜態頁面的方法網上比較多。結合實際的需求，我在網上找了一些源代碼，並作修改。現在把修改後的代碼以及說明寫一下。
一個是一個頁面轉換的類，該類通過靜態函數Changfile（）來實現，動態頁面到靜態頁面的轉換。
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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");
//嘗試讀取已有文件
Stream st = GetFileStream(filename);
//如果文件存在並且讀取成功
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();
//寫進文件
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)
...{
//一小時後過期
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);
}
}
}
在頁面文件中，ForURL.aspx的後臺代碼如下：
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.Redirect("Post.aspx?PID=" + id );
}
}
catch ...{
}
}
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