如何用C#實現動態網頁面aspx的靜態html轉換

最後更新：2018-12-05 來源：互聯網

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這篇文章將一步一步的說明如何從一個流中得到靜態html頁並把它下載到一個檔案中,當你用一個FileStream對象並把Response.Filter屬性設定到這個FileStream對象時,所有的Response.Write的http輸出都將寫入到檔案中.

1,在visual C#.net 中建立一個名為ASPNETFilter的web公用程式工程'
2,建立右鍵WebForm1.aspx，然後點擊WebForm1.aspx的設計視窗.
3,選擇"源"'
4,用下面的代碼替換掉已有的代碼.

WebForm1.aspx代碼如下：

<%@ Page language="c#" CodeFile="WebForm1.aspx.cs" AutoEventWireup="false" Inherits="ASPNETFilter.WebForm1" %>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>SaveResponse</title>
</head>
<body>
<form id="SaveResponse" method="post" runat="server">
<asp:TextBox ID="TextBox1" Text="Textbox 1" Runat="server" /><br/>
<asp:ListBox ID="Listbox1" Runat="server" size="3">
<asp:ListItem Value="0">Zero</asp:ListItem>
<asp:ListItem Value="1" Selected="True">One</asp:ListItem>
<asp:ListItem Value="2">Two</asp:ListItem>
</asp:ListBox><br/>
<asp:CheckBox ID="Checkbox1" Runat="server" Checked="True" Text="Checkbox 1" />
</form>
</body>
</html>

建立ResponseFilter類:
1,添加一個名為ResponseFilter.cs的新類(實際上是一個新的.cs檔案)
2,用下面的代碼替換掉已有的代碼.

ResponseFilter.cs的如下：

using System;
using System.IO;

namespace ASPNETFilter
{
    public class ResponseFilter : Stream
    {
        private Stream m_sink;
        private long m_position;
        private FileStream fs;

        public ResponseFilter(Stream sink)
        {
            m_sink = sink;
            fs = new FileStream(@"G:/mynet/ASPNETFilter/FilterOutput/response.htm", FileMode.OpenOrCreate, FileAccess.Write);

}

        // The following members of Stream must be overriden.
        public override bool CanRead
        { get { return true; } }

public override bool CanSeek
{ get { return false; } }

public override bool CanWrite
{ get { return false; } }

public override long Length
{ get { return 0; } }

        public override long Position
        {
            get { return m_position; }
            set { m_position = value; }
        }

        public override long Seek(long offset, System.IO.SeekOrigin direction)
        {
            return 0;
        }

        public override void SetLength(long length)
        {
            m_sink.SetLength(length);
        }

        public override void Close()
        {
            m_sink.Close();
            fs.Close();
        }

        public override void Flush()
        {
            m_sink.Flush();
        }

        public override int Read(byte[] buffer, int offset, int count)
        {
            return m_sink.Read(buffer, offset, count);
        }

        // Override the Write method to filter Response to a file.
        public override void Write(byte[] buffer, int offset, int count)
        {
            //Write out the response to the browser.
            m_sink.Write(buffer, 0, count);

            //Write out the response to the file.
            fs.Write(buffer, 0, count);
        }
    }
}

注意:在你運行這個程式之前:
1:建立一個檔案夾G:/mynet/ASPNETFilter/FilterOutput（註：名為ASPNETFilter的web公用程式工程放在"G:/mynet/"目錄下）

2.給這個檔案夾賦於讀與寫的權力(可以設定檔案夾的屬性).

接著如下：

1,在解決方案面板中選擇WebForm1.aspx.
2.按右鍵,選擇查看源碼.
3.在OnInit事件中添寫如何代碼:
Response.Filter = new ResponseFilter(Response.Filter);

WebForm1.aspx.cs代碼如下：

using System;
using System.Data;
using System.Configuration;
using System.Collections;
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;

namespace ASPNETFilter
{
    public partial class WebForm1 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {

        }
        override protected void OnInit(EventArgs e)
        {
            Response.Filter = new ResponseFilter(Response.Filter);

base.OnInit(e);

}
}
}

測試ResponseFilter
1.儲存改變到ASPNETFilter工程.
2.選擇產生菜單,選擇產生解決方案.

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如何用C#實現動態網頁面aspx的靜態html轉換

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