[C#][WinForm]如何清除特定論壇網頁"毛毛蟲"

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  • 2009-12-07

[C#][WinForm]如何清除特定論壇網頁"毛毛蟲"

這天MSN那頭傳來,有辦法清除網頁上的"毛毛蟲"嗎??毛毛蟲搞得複製文章很痛苦,心想是在說啥??算了還是看看網站才能明白他在說什麼??

 

瀏覽網頁看似很正常

image

瀏覽HTML就會發現"毛毛蟲"

image

直接複製後,我就可以體會他的痛苦了,看來這是論壇用來防止盜連文章的一種手法

image

就在看HTML碼同時,Feel大哥又來了~~~動手把!孩子

 

快速作法利用webbrowser+.NET RegularExpressions應該就可以過濾那些"毛毛蟲"

 

為了取得shell的windows須先加入參考(Microsoft Internet Controls)

 


SHDocVw.ShellWindows SW = new SHDocVw.ShellWindows();
        private void GetShellWindow()
        {
            foreach (SHDocVw.InternetExplorer ie in SW)
            {
                string shellwinname;
                shellwinname= ie.FullName.ToLower();
                //判斷IE視窗
                if (shellwinname.IndexOf("iexplore") > 0)
                {
                    listBox1.Items.Add(ie.LocationURL);
                }               
            }
        }

listbox_selectedindexchanged事件

 


private void listBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
            if (listBox1.SelectedIndex < -1 || listBox1.SelectedItem==null)
            {
                MessageBox.Show("請點選網址");
                return;
            }
            else
            {               
                WebBrowser wb = new WebBrowser();
                g_done = false;//先前宣告的Global變數 
                g_html = "";//先前宣告的Global變數
                wb.Navigate(listBox1.SelectedItem.ToString());
                //委派DocumentCompleted事件
                wb.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(wb_DocumentCompleted);              
                while (!done)
                {
                    Application.DoEvents();
                    System.Threading.Thread.Sleep(10);//維持UI介面
                }
                if (wb.Url.ToString().Contains("xxx.com/forums/"))
                {

                    textBox1.Text = logic.Utility.ParserHtml(html);
                }
                else
                    textBox1.Text = html;
            }            
            wb.Dispose();
         }

wb_DocumentCompleted事件

 


 private void wb_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
        {
            //判斷論壇網址
            if (wb.Url.ToString().Contains("xxx.com/forums/"))
            {
                html = wb.Document.Body.InnerHtml;
            }
            else
            {
               //一般網頁也就不用paserhtml 
               html = wb.Document.Body.InnerText;
            }            
            done = true;   
        }

logic.Utility.ParserHtml class


public static string ParseHtml(string html)
        {         
            string result = "";
            result = Regex.Replace(html, "&nbsp", string.Empty, RegexOptions.IgnoreCase);
            result = Regex.Replace(result, "<(\\s*)script([^>])*>", "<script>", RegexOptions.IgnoreCase );
            result = Regex.Replace(result, @"(<( )*(/)( )*script( )*>)", "</script>", RegexOptions.IgnoreCase );
            result = Regex.Replace(result, "(<script>).*(</script>)", string.Empty, RegexOptions.IgnoreCase );
            result = Regex.Replace(result, "<( )*style([^>])*>", "<style>", RegexOptions.IgnoreCase);
            result = Regex.Replace(result, @"(<( )*(/)( )*style( )*>)", "</style>", RegexOptions.IgnoreCase );
            result = Regex.Replace(result, "(<style>).*(</style>)", string.Empty, RegexOptions.IgnoreCase );
            result = Regex.Replace(result, "<( )*head([^>])*>", "<head>", RegexOptions.IgnoreCase );
            result = Regex.Replace(result, @"(<( )*(/)( )*head( )*>)", "</head>", RegexOptions.IgnoreCase );
            result = Regex.Replace(result, "(<head>).*(</head>)", string.Empty, RegexOptions.IgnoreCase);
            result = Regex.Replace(result, "<SPAN style=\"DISPLAY: none\">.{15,70}</SPAN>", string.Empty, RegexOptions.IgnoreCase);
            result = Regex.Replace(result, "<FONT style=\"COLOR: #fff; FONT-SIZE: 0px\">.{15,70}</FONT>", string.Empty, RegexOptions.IgnoreCase); 
            result = Regex.Replace(result, "(<br>)", "\r\n", RegexOptions.IgnoreCase);
            result = Regex.Replace(result, "(<[^>]*>)", string.Empty, RegexOptions.IgnoreCase);         
            result = Regex.Replace(result, @";", string.Empty, RegexOptions.IgnoreCase);        
            return result;        
         }  

 

處理前

image

處理後

image

打完收工~~又要windows update了