C#获取网页的HTML码、下载网站图片

来源：互联网发布：美国2016年gdp数据编辑：程序博客网时间：2024/04/30 04:53

1、根据URL请求获取页面HTML代码

/// <summary>/// 获取网页的HTML码/// </summary>/// <param name="url">链接地址</param>/// <param name="encoding">编码类型</param>/// <returns></returns>public static string GetHtmlStr(string url, string encoding){    string htmlStr = "";    if (!String.IsNullOrEmpty(url))    {        WebRequest request = WebRequest.Create(url);            //实例化WebRequest对象        WebResponse response = request.GetResponse();           //创建WebResponse对象        Stream datastream = response.GetResponseStream();       //创建流对象        Encoding ec = Encoding.Default;        if (encoding == "UTF8")        {            ec = Encoding.UTF8;        }        else if (encoding == "Default")        {            ec = Encoding.Default;        }        StreamReader reader = new StreamReader(datastream, ec);        htmlStr = reader.ReadToEnd();                           //读取数据        reader.Close();        datastream.Close();        response.Close();    }    return htmlStr;}

2、下载网站图片

/// <summary>/// 下载网站图片/// </summary>/// <param name="picUrl"></param>/// <returns></returns>public string SaveAsWebImg(string picUrl){    string result = "";    string path = AppDomain.CurrentDomain.SetupInformation.ApplicationBase + @"/File/";  //目录    try    {        if (!String.IsNullOrEmpty(picUrl))        {            Random rd = new Random();            DateTime nowTime = DateTime.Now;            string fileName = nowTime.Month.ToString() + nowTime.Day.ToString() + nowTime.Hour.ToString() + nowTime.Minute.ToString() + nowTime.Second.ToString() + rd.Next(1000, 1000000) + ".jpeg";            WebClient webClient = new WebClient();            webClient.DownloadFile(picUrl, path + fileName);            result = fileName;        }    }    catch { }    return result;}

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