ASP.NET生成静态页面

      ASP.NET应用程序中，为了提交程序的性能，往往会采用生成静态页面。生成静态页面的方法主要有
模版替换、HttpWebRequest生成，Rander方式。这次主要说说后两种。HttpWebRequest方式Rander方式差不多，都是生成HTML文件到硬盘。差别在于如是验证方式是Form的话，只能使用Rander方式。对应于动静结合页面，一般采用两个页面，一个页面是目标页面，用来生成，另一个页面用于加载生成的文件。

HttpWebRequest方式

 1         ///   <summary>
 2           ///  Write the HTML file.
 3           ///   </summary>
 4           ///   <param name="PageUrl"> The page URL. </param>
 5           ///   <param name="EncodeTypeStr"> The encode type STR. </param>
 6           ///   <param name="LocalDiskPath"> The local disk path. </param>
 7           ///   <remarks> Author:Petter Liu   http://wintersun.cnblogs.com   </remarks>
 8           ///   <example>
 9           ///   <code>
10           ///   <![CDATA[
11           ///  WriterHtmlFile("/TDD2005/Rpt_TodayFocus.aspx", "utf-8", "/TDD2005/Rpt_TodayFocus.htm")
12           ///  ]]>
13           ///   </code>
14           ///   </example>
15           ///   <returns> Is success </returns>
16           public   static   bool  WriteHtmlFile( string  PageUrl,  string  EncodeTypeStr,  string  LocalDiskPath)
17          {
18               try
19              {
20                  File.Delete(HttpContext.Current.Server.MapPath(LocalDiskPath));
21                   string  text  =   " <!--#include virtual=\ " hehe\ " --> " ;
22                  
23                  HttpWebRequest request  =  (HttpWebRequest)WebRequest.Create( " http:// "   +  HttpContext.Current.Request.ServerVariables[ " SERVER_NAME " ]  +  PageUrl);
24                  request.Timeout  =   0xc350 ;
25                  HttpWebResponse response  =  (HttpWebResponse)request.GetResponse();
26                  Encoding encoding  =  Encoding.GetEncoding(EncodeTypeStr);
27                  StreamReader reader  =   new  StreamReader(response.GetResponseStream(), encoding);
28                  text  =  reader.ReadToEnd();
29                  response.Close();
30                  reader.Close();
31                  StreamWriter writer  =   new  StreamWriter(HttpContext.Current.Server.MapPath(LocalDiskPath),  true , Encoding.GetEncoding(EncodeTypeStr));
32                  writer.WriteLine(text);
33                  writer.Close();
34                   return   true ;
35              }
36               catch (Exception ex)
37              {
38                  Utility.Error.LogSql( " 生成文件出错 " , ex.ToString());
39                   return   false ;
40              }
41          } 

Rander方式

 1      ///   <summary>
 2           ///  Initializes the  <see cref="T:System.Web.UI.HtmlTextWriter"/>  object and calls on the child controls of the  <see cref="T:System.Web.UI.Page"/>  to render.
 3           ///   </summary>
 4           ///   <remarks> Author:Petter Liu   http://wintersun.cnblogs.com   </remarks>
 5           ///   <param name="writer"> The  <see cref="T:System.Web.UI.HtmlTextWriter"/>  that receives the page content. </param>
 6           protected   override   void  Render(HtmlTextWriter writer)
 7          {
 8               string  filename  =   string .Format( " z{0}.ascx " , _city_id);
 9               if  (File.Exists(Server.MapPath(filename)))
10              {
11                  File.Delete(Server.MapPath(filename));
12              }
13              System.IO.StringWriter html  =   new  System.IO.StringWriter();
14              System.Web.UI.HtmlTextWriter tw  =   new  System.Web.UI.HtmlTextWriter(html);
15               base .Render(tw);
16              System.IO.StreamWriter sw;
17              sw  =   new  System.IO.StreamWriter(Server.MapPath(filename),  false , System.Text.Encoding.Default);
18              sw.Write(html.ToString());
19              sw.Close();
20              tw.Close();
21               // Response.Write(html.ToString());   // 呈现页面
22               // Response.Redirect(filename);       // 重定向生成的页面
23              Response.Redirect( " index.aspx " );
24          } 

在启动页面Page_Load

 1           ///   <summary>
 2           ///  Loads the static page.
 3           ///   <remarks> Author:Petter Liu   http://wintersun.cnblogs.com   </remarks>
 4           ///   </summary>
 5           private   void  LoadStaticPage()
 6          {
 7               string  ascxname  =   string .Format( " z{0}.ascx " ,  this .City_Id);
 8               if  (File.Exists(Server.MapPath(ascxname)))
 9              {
10                  System.Web.UI.Control NameControl  =  Page.LoadControl(ascxname);
11                  NameControl.ID  =   " mainpage " ;
12                  PlaceHolder1.Controls.Add(NameControl);
13              }
14               else
15              {
16                  Response.Redirect( " MainPage.aspx " );
17              }
18          }