最近在自觉python,看到了知乎上一篇文章(https://www.zhihu.com/question/20799742),在福利网上爬视频。。。
由是我就开始跟着做了,但答主给的例子是基于python2.x的,而我开始学的是3.x,把print用法改了以后还是有很多模块导入不了,新手又不知道该怎么解决。
于是,为了学(shang)习(che),我就把其中的一段代码用C#写了一次。在加了一些延时的情况下,一会儿硬盘就被占用了3个多g了。。。同学们,要注意身体啊
下面贴出代码。。代码中故意留了几个bug,避免非程序员上车
class Program { static void Main(string[] args) { var baseString = "http://w*w.46ek.c*m/view/{0}.html"; Regex regex = new Regex(@"http://m4.26ts.com/[.0-9-a-zA-Z]*.mp4"); WebClient wc = new WebClient(); uint startIndex = ReadStartIndex(); uint loop = ReadLoopLen(); for (int i = 0; i < lop; i++) { var subUrl = string.Format(baseString, startIndex + i); WebRequest wReq = System.Net.WebRequest.Create(subUrl) try { WebResponse wResp = wReq.GetResponse(); Stream respStream = wResp.GetResponseStream(); using (StreamReader reader = new StreamReader(respStream, Encoding.GetEncoding("GB18030"))) { var htmlString = reader.ReadToEnd(); Match m = regex.Match(htmlString); if (m.Success) { DownloadFile(wc, m.Value, string.Format("{0}.mp4", startIndex + i)); } } } catch (Exception exc) { Console.WriteLine("Error : {0}", exc.Message); } Thread.Sleep(5); } } private static uint ReadStartIndex() { while (true) { Console.Write("Set start index :"); string line = Console.ReadLine(); uint index = 0; if (UInt32.TryParse(line, out index)) { Console.WriteLine("Start index setted : "+ index); return index; } Thread.Sleep(500); } } private static uint ReadLoopLen() { while (true) { Console.Write("Set loop len :"); string line = Console.ReadLine(); uint index = 0; if (UInt32.TryParse(line, out index)) { Console.WriteLine("Loop len setted : " + index); return index; } Thread.Sleep(500); } } private static void DownloadFile(WebClient wc, string url, string localname) { Console.WriteLine("Downloading file {1} to {2}", url, localname); wc.DownloadFile(url, localname); Console.WriteLine("File {0} download completed!", localname); }
原文地址:https://www.cnblogs.com/GuoRL/p/8328329.html
时间: 2024-11-02 14:40:03