通过线程方式下载图片

2019-11-11 02:02:01

字体：大中小

来源：转载

供稿：网友

通过线程下载网页上面的图片：

代码下载的图片有点劲爆，慎下载

class PRogram { static void Main(string[] args) { string[] str = { "model", "sexy", "belle", "stars" }; for (int url = 0; url < str.Length; url++) { Thread thread = new Thread(DownLoad); thread.Start(str[url]); } Console.Read(); } public static void DownLoad(object category) { string url = string.Empty; for (int purl = 14; purl > 10; purl--) { for (int pageSize = 0; pageSize < 20; pageSize++) { try { if (pageSize == 0) url = "http://www.mm8mm8.com/" + category + "/" + purl + ".html"; else url = "http://www.mm8mm8.com/" + category + "/" + purl + "_" + pageSize + ".html"; //创建http链接 var request = (HttpWebRequest)WebRequest.Create(url); request.Timeout = 1000 * 5; //5s过期 var response = (HttpWebResponse)request.GetResponse(); Stream stream = response.GetResponseStream(); StreamReader sr = new StreamReader(stream); string content = sr.ReadToEnd(); var list = GetHtmlImageUrlList(content); WebClient client = new WebClient(); string[] directory = { @"D:/MM/", @"X:/MM/", @"Y:/MM/"}; var directoryName = directory[new Random().Next(0, directory.Length)]; if (!Directory.Exists(directoryName)) Directory.CreateDirectory(directoryName); var fileName = string.Empty; if (list.Count == 0) { Console.WriteLine("时间：" + DateTime.Now + " 当前网址：" + url + " 未发现图片"); break; } try { fileName = category + "_" + purl + "_" + (pageSize + 1) + ".jpg"; var localFile = directoryName + fileName; var imageRequest = (HttpWebRequest)WebRequest.Create(list[0]); imageRequest.Timeout = 1000 * 5; //5s 超时 var imageResponse = (HttpWebResponse)imageRequest.GetResponse(); var s = imageResponse.GetResponseStream(); Image image = Image.FromStream(s); image.Save(localFile); image.Dispose(); Console.WriteLine("时间：" + DateTime.Now + " 图片：" + fileName + " 已经下载存入磁盘位置：" + localFile); } catch (Exception e) { Console.WriteLine("时间：" + DateTime.Now + " 当前图片：" + fileName + " 错误信息：" + e.Message); continue; } } catch (Exception ex) { Console.WriteLine("时间：" + DateTime.Now + " 当前网址：" + url + " 错误信息：" + ex.Message); } } } } /// <summary> /// 取得HTML中所有图片的 URL。 /// </summary> /// <param name="sHtmlText">HTML代码</param> /// <returns>图片的URL列表</returns> public static List<string> GetHtmlImageUrlList(string sHtmlText) { // 定义正则表达式用来匹配 img 标签 Regex regImg = new Regex(@"<img/b[^<>]*?/bsrc[/s/t/r/n]*=[/s/t/r/n]*[""']?[/s/t/r/n]*(?<imgUrl>[^/s/t/r/n""'<>]*)[^<>]*?/?[/s/t/r/n]*>", RegexOptions.IgnoreCase); // 搜索匹配的字符串 MatchCollection matches = regImg.Matches(sHtmlText); List<string> sUrlList = new List<string>(); // 取得匹配项列表 foreach (Match match in matches) sUrlList.Add(match.Groups["imgUrl"].Value); return sUrlList; } }

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