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【Asp.Net】网络文件下载

作者:Abel / 发布于2015/10/13/ 595


	using System.IO;
	using System.IO.Compression;
	using System.Net;

	namespace ConsoleApplication2
	{
	 public static class HttpFileDownloader
	 {
	 public static byte[] DownLoad(string url)
	 {
	 byte[] buffer = null;
	 HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(url);
	 req.UserAgent = "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)";
	 req.Headers.Add("Accept-Encoding", "gzip, deflate");
	 req.KeepAlive = true;

	 using (HttpWebResponse response = (HttpWebResponse)req.GetResponse())
	 {
	 Stream reader;
	 if (response.ContentEncoding.ToLower().Contains("gzip"))
	 {
	 reader = new System.IO.Compression.GZipStream(response.GetResponseStream(), CompressionMode.Decompress);
	 }
	 else
	 {
	 reader = response.GetResponseStream();
	 }
	 if (reader.CanRead)
	 {
	 MemoryStream ms = new MemoryStream();
	 reader.CopyTo(ms);
	 buffer = ms.GetBuffer();
	 }
	 reader = null;
	 }

	 req = null;
	 return buffer;
	 }
	 }
	}

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