| 标题 | 用asp.net c# HttpWebRequest获取网页源代码 |
| 内容 | 该方法需要传递目标网页的编码方式，比如System.Text.Encoding.Default或者System.Text.Encoding.UTF8 如果哪位高手知道如何自动判断目标页面的编码格式，请在评论中告知。谢谢! /// /// 获取源代码 /// /// /// /// public static string GetPage(string url, Encoding encoding) { HttpWebRequest request = null; HttpWebResponse response = null; StreamReader reader = null; try { request = (HttpWebRequest)WebRequest.Create(url); request.UserAgent = ""; request.Timeout = 20000; request.AllowAutoRedirect = false; response = (HttpWebResponse)request.GetResponse(); if (response.StatusCode == HttpStatusCode.OK && response.ContentLength < 1024 * 1024) { reader = new StreamReader(response.GetResponseStream(), encoding); string html = reader.ReadToEnd(); return html; } } catch { } finally { if (response != null) { response.Close(); response = null; } if (reader != null) reader.Close(); if (request != null) request = null; } return string.Empty; |
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