网页图片提取工具代码,CSharp代码库,德仔网

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【CSharp】网页图片提取工具
作者:zhensoft163 / 发布于2014/4/10/ 1320
网页图片提取工具
public Array MatchHtml(string html,string com)
 {
 List<string> urls = new List<string>();
 html = html.ToLower();
 //获取SRC标签中的URL
 Regex regexSrc = new Regex("src=\"[^\"]*[(.jpg)(.png)(.gif)(.bmp)(.ico)]\"");
 foreach(Match m in regexSrc.Matches(html))
 {
 string src = m.Value;
 src = src.Replace("src=","").Replace("\"","");
 if (!src.Contains("http"))
 src = com + src;
 if(!urls.Contains(src))
 urls.Add(src);
 }
 //获取HREF标签中URL
 Regex regexHref = new Regex("href=\"[^\"]*[(.jpg)(.png)(.gif)(.bmp)(.ico)]\"");
 foreach (Match m in regexHref.Matches(html))
 {
 string href = m.Value;
 href = href.Replace("href=", "").Replace("\"", "");
 if (!href.Contains("http"))
 href = com + href;
 if(!urls.Contains(href))
 urls.Add(href);
 }
 return urls.ToArray();
 }





[DllImport("kernel32.dll")]
 static extern bool SetConsoleMode(IntPtr hConsoleHandle, int mode);
 [DllImport("kernel32.dll")]
 static extern bool GetConsoleMode(IntPtr hConsoleHandle, out int mode);
 [DllImport("kernel32.dll")]
 static extern IntPtr GetStdHandle(int handle);
 const int STD_INPUT_HANDLE = -10;
 const int ENABLE_QUICK_EDIT_MODE = 0x40 | 0x80;
 public static void EnableQuickEditMode()
 {
 int mode; IntPtr handle = GetStdHandle(STD_INPUT_HANDLE);
 GetConsoleMode(handle, out mode);
 mode |= ENABLE_QUICK_EDIT_MODE;
 SetConsoleMode(handle, mode);
 }
 static void Main(string[] args)
 {
 EnableQuickEditMode();
 int oldCount = 0;
 Console.Title = "TakeImageFromInternet";
 string path = "E:\\Download\\loading\\";
 while (true)
 {
 Console.Clear();
 string countFile = "E:\\CountFile.txt";//用来计数的文本，以至于文件名不重复
 int cursor = 0;
 if (File.Exists(countFile))
 {
 string text = File.ReadAllText(countFile);
 try
 {
 cursor =oldCount = Convert.ToInt32(text);//次数多了建议使用long
 }
 catch { }
 }
 Console.Write("please input a url:");
 string url = "http://www.baidu.com/";
 string temp = Console.ReadLine();
 if (!string.IsNullOrEmpty(temp))
 url = temp;
 Match mcom = new Regex(@"^(?i)http://(\w+\.){2,3}(com(\.cn)?|cn|net)\b").Match(url);//获取域名
 string com = mcom.Value;
 //Console.WriteLine(mcom.Value);
 Console.Write("please input a save path:");
 temp = Console.ReadLine();
 if (Directory.Exists(temp))
 path = temp;
 Console.WriteLine();
 WebClient client = new WebClient();
 byte[] htmlData = null;
 htmlData = client.DownloadData(url);
 MemoryStream mstream = new MemoryStream(htmlData);
 string html = "";
 using (StreamReader sr = new StreamReader(mstream))
 {
 html = sr.ReadToEnd();
 }
 Array urls = new MatchHtmlImageUrl().MatchHtml(html,com);

 foreach (string imageurl in urls)
 {
 Console.WriteLine(imageurl);
 byte[] imageData = null;
 try
 {
 imageData = client.DownloadData(imageurl);
 }
 catch { }
 if (imageData != null && imageData.Length>0)
 using (MemoryStream ms = new MemoryStream(imageData))
 {
 try
 {

 string ext = Aping.Utility.File.FileOpration.ExtendName(imageurl);
 ImageFormat format = ImageFormat.Jpeg;
 switch (ext)
 {
 case ".jpg":
 format = ImageFormat.Jpeg;
 break;
 case ".bmp":
 format = ImageFormat.Bmp;
 break;
 case ".png":
 format = ImageFormat.Png;
 break;
 case ".gif":
 format = ImageFormat.Gif;
 break;
 case ".ico":
 format = ImageFormat.Icon;
 break;
 default:
 continue;
 }
 Image image = new Bitmap(ms);
 if (Directory.Exists(path))
 image.Save(path + "\\" + cursor + ext, format);
 }
 catch(Exception ex) { Console.WriteLine(ex.Message); }
 }
 cursor++;
 }
 mstream.Close();
 File.WriteAllText(countFile, cursor.ToString(), Encoding.UTF8);
 Console.WriteLine("take done...image count:"+(cursor-oldCount).ToString());
 }
 }
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