GZip流压缩、解压

最新推荐文章于 2022-11-16 10:38:52 发布

原创最新推荐文章于 2022-11-16 10:38:52 发布 · 305 阅读

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#byte #encoding #stream #string #url

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        public static string GetDataFromUrlGZip(string url, Encoding encoding)
        {
            WebRequest request = WebRequest.Create(url);
            //request.Timeout = 5000;
            request.Method = "GET";
            request.ContentType = "text/html; charset=gb2312";

            string result;
            using (WebResponse response = request.GetResponse())
            {
                Stream s = response.GetResponseStream();
                using (StreamReader sr = new StreamReader(s, encoding))
                {
                    result = sr.ReadToEnd();
                }
            }

            byte[] resultbytes = UnicodeEncoding.ASCII.GetBytes(result);
            resultbytes = Compress(resultbytes);

            string resultGZip = UnicodeEncoding.ASCII.GetString(resultbytes);

            byte[] rbs = UnicodeEncoding.ASCII.GetBytes(resultGZip);
            rbs = DeCompress(rbs);
            string results = UnicodeEncoding.ASCII.GetString(rbs);


            return result;
        }



        internal static byte[] Compress(byte[] data)
        {
            MemoryStream stream = new MemoryStream();
            GZipStream gZipStream = new GZipStream(stream, CompressionMode.Compress);
            gZipStream.Write(data, 0, data.Length);
            //....暂时先在注释的位置卖点关子
            return stream.ToArray();
        }

        internal static byte[] DeCompress(byte[] data)
        {
            MemoryStream stream = new MemoryStream();
            GZipStream gZipStream = new GZipStream(new MemoryStream(data), CompressionMode.Decompress);
            byte[] bytes = new byte[4096];
            int n;
            while ((n = gZipStream.Read(bytes, 0, bytes.Length)) != 0)
            {
                stream.Write(bytes, 0, n);
            }
            return stream.ToArray();
        }