ASPX文件 生成 HTML

时间:2015/12/3 17:22:00来源:互联网 作者:flyso 点击: 1252 次

经过验证 下面大致5个方法均可以成功转化,但是转化过程中一定要注意原ASPX文件的编码类型,如果是GB2312的 那么不管是在streamReader的时候,还是先将原数据转化成byte流,再转化出HTML字符串的时候一定要注意同原ASPX页面编码类型相同,否则将出现乱码。


using System.Net;
using System.Text;
using System.IO;
public partial class _Default : System.Web.UI.Page
{
    public StreamWriter sw;
    protected void Page_Load(object sender, EventArgs e)
    {
      
        WebClient myWebClient = new WebClient();
        myWebClient.Credentials = CredentialCache.DefaultCredentials;
        byte[] pagedata = myWebClient.DownloadData("http://home.xmhouse.com/default.aspx");
        string myDataBuffer = Encoding.Default.GetString(pagedata);
        string path = HttpContext.Current.Server.MapPath(".");
        Encoding code = Encoding.GetEncoding("gb2312");
        string htmlfilename = "test.html";
        try
        {
            FileStream fs = new FileStream(path+"/"+htmlfilename, FileMode.Create, FileAccess.Write);
            StreamWriter sw = new StreamWriter(fs, Encoding.Default);
            sw.WriteLine(myDataBuffer);
            sw.Close();
            fs.Close();
            Response.Write("生成成功了!ok");
        }
        catch (Exception ex)
        {
            File.Delete(path + htmlfilename);
            HttpContext.Current.Response.Write(ex.Message);
            HttpContext.Current.Response.End();
            Response.Write("生成失败了!no");
        }
        finally
        {
            if (sw != null)
                sw.Close();
        }
    }
}

我们开发的asp.net系统中,有些动态的页面常被频繁,如我们的首页index.aspx它涉及到大量的数据库查询工作,当不断有用户它时,服务器便不断向数据库的查询,实际上做了许多重复的工作

服务器端的myPage.aspx

客户端显示myPage.htm

客户端

针对这种资源的浪费情况,我们现在来设计一个解决方案。我们先将那些一段时间内内容不会有什么改变,但又遭大量的动态页面生成静态的页面存放在服务器上,当客户端发出请求时,就让他们直接我们生成的静态页面,过程如下图。

客户端显示myPage.htm

客户端

Execute

服务器端的myPage.aspx

服务器端的myPage.htm

现在我们需要一个后台程序来完成这些事情。

我们可将此做成一个类classAspxToHtml ,其代码

using System;

using System.IO;

using System.Web.UI;

namespace LeoLu

{

/// summary

/// AspxToHtml 的摘要说明。

/// /summary

public class AspxToHtml

{

/// summary

/// Aspx文件url

/// /summary

public string strUrl;

/// summary

/// 生成html文件的保存路径

/// /summary

public string strSavePath;

/// summary

/// 生成html文件的文件名

/// /summary

public string strSaveFile;

public AspxToHtml()

{

//

// TOD 在此处添加构造函数逻辑

//

}

/// summary

/// 将strUrl放到strSavePath目录下,保存为strSaveFile

/// /summary

/// returns是否成功/returns

public bool ExecAspxToHtml()

{

try

{

StringWriter strHTML = new StringWriter();

System.Web.UI.Page myPage = new Page(); //System.Web.UI.Page中有个Server对象,我们要利用一下它

myPage.Server.Execute(strUrl,strHTML);//将asp_net.aspx将在客户段显示的html内容读到了strHTML中

StreamWriter sw = new StreamWriter(strSavePath+strSaveFile,true,System.Text.Encoding.GetEncoding("GB2312"));

//新建一个文件Test.htm,文件格式为GB2312

sw.Write(strHTML.ToString()); //将strHTML中的字符写到Test.htm中

strHTML.Close();//关闭StringWriter

sw.Close();//关闭StreamWriter

return true;

}

catch

{

return false;

}

}

/// summary

/// 将Url放到Path目录下,保存为FileName

/// /summary

/// param name="Url"aspx页面url/param

/// param name="Path"生成html文件的保存路径/param

/// param name="FileName"生成html文件的文件名/param

/// returns/returns

public bool ExecAspxToHtml(string Url,string Path,string FileName)

{

try

{

StringWriter strHTML = new StringWriter();

System.Web.UI.Page myPage = new Page(); //System.Web.UI.Page中有个Server对象,我们要利用一下它

myPage.Server.Execute(Url,strHTML); //将asp_net.aspx将在客户段显示的html内容读到了strHTML中

StreamWriter sw = new StreamWriter(Path+FileName,true,System.Text.Encoding.GetEncoding("GB2312"));

//新建一个文件Test.htm,文件格式为GB2312

sw.Write(strHTML.ToString()); //将strHTML中的字符写到Test.htm中

strHTML.Close();//关闭StringWriter

sw.Close();//关闭StreamWriter

return true;

}

catch

{

return false;

}

}

}

}





using system.net;
using system.io;  

First:在服务器上指定aspx网页,生成html静态页

public partial class Default2 : System.Web.UI.Page
{
     protected void Page_Load(object sender, EventArgs e)
     {
         if (!IsPostBack)
         {
             StreamWriter sw = new StreamWriter(Server.MapPath("静态页1.htm"), false, System.Text.Encoding.GetEncoding("gb2312"));
             Server.Execute("Default3.aspx", sw);
             sw.Close();
         }
     }
}

Second:在服务器上执行aspx网页时在page_render事件里将本页面生成html静态页

public partial class Default3 : System.Web.UI.Page
{
     protected void Page_Load(object sender, EventArgs e)
     {
        
     }
     protected override void Render(HtmlTextWriter writer)
     {
         StringWriter html = new StringWriter();
         System.Web.UI.HtmlTextWriter tw = new System.Web.UI.HtmlTextWriter(html);
         base.Render(tw);
         System.IO.StreamWriter sw;
         sw = new System.IO.StreamWriter(Server.MapPath("静态页2.htm"), false, System.Text.Encoding.Default);
         sw.Write(html.ToString());
         sw.Close();
         tw.Close();
         Response.Write(html.ToString());
     }
}

Third:从指定连接获取源代码生成html静态页

public partial class Default4 : System.Web.UI.Page
{
     protected void Page_Load(object sender, EventArgs e)
     {
         if (!IsPostBack)
         {
             string pageurl = "http://www.baidu.com";
             WebRequest request = WebRequest.Create(pageurl);
             WebResponse response = request.GetResponse();
             Stream resstream = response.GetResponseStream();
             StreamReader sr = new StreamReader(resstream, System.Text.Encoding.Default);
             string contenthtml = sr.ReadToEnd();
             resstream.Close();
             sr.Close(); //写入文件
             System.IO.StreamWriter sw;
             sw = new System.IO.StreamWriter(Server.MapPath("静态页生成方法3.htm"), false, System.Text.Encoding.Default);
             sw.Write(contenthtml);
             sw.Close();
         }
     }
}

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