C# GIZP解码
/// <summary> /// GZip解压函数 /// </summary> /// <param name="data"></param> /// <returns></returns> public byte[] GZipDecompress(byte[] data) { using (MemoryStream stream = new MemoryStream()) { using (GZipStream gZipStream = new GZipStream(new MemoryStream(data), CompressionMode.Decompress)) { byte[] bytes = new byte[40960]; int n; while ((n = gZipStream.Read(bytes, 0, bytes.Length)) != 0) { stream.Write(bytes, 0, n); } gZipStream.Close(); } return stream.ToArray(); } } /// <summary> /// GZip压缩函数 /// </summary> /// <param name="data"></param> /// <returns></returns> public byte[] GZipCompress(byte[] data) { using (MemoryStream stream = new MemoryStream()) { using (GZipStream gZipStream = new GZipStream(stream, CompressionMode.Compress)) { gZipStream.Write(data, 0, data.Length); gZipStream.Close(); } return stream.ToArray(); } } /// <summary> /// Deflate解压函数 /// JS:var details = eval_r('(' + utf8to16(zip_depress(base64decode(hidEnCode.value))) + ')')对应的C#压缩方法 /// </summary> /// <param name="strSource"></param> /// <returns></returns> public string DeflateDecompress(string strSource) { byte[] buffer = Convert.FromBase64String(strSource); using (System.IO.MemoryStream ms = new System.IO.MemoryStream()) { ms.Write(buffer, 0, buffer.Length); ms.Position = 0; using (System.IO.Compression.DeflateStream stream = new System.IO.Compression.DeflateStream(ms, System.IO.Compression.CompressionMode.Decompress)) { stream.Flush(); int nSize = 16 * 1024 + 256; //假设字符串不会超过16K byte[] decompressBuffer = new byte[nSize]; int nSizeIncept = stream.Read(decompressBuffer, 0, nSize); stream.Close(); return System.Text.Encoding.UTF8.GetString(decompressBuffer, 0, nSizeIncept); //转换为普通的字符串 } } } /// <summary> /// Deflate压缩函数 /// </summary> /// <param name="strSource"></param> /// <returns></returns> public string DeflateCompress(string strSource) { if (strSource == null || strSource.Length > 8 * 1024) throw new System.ArgumentException("字符串为空或长度太大!"); byte[] buffer = System.Text.Encoding.UTF8.GetBytes(strSource); using (System.IO.MemoryStream ms = new System.IO.MemoryStream()) { using (System.IO.Compression.DeflateStream stream = new System.IO.Compression.DeflateStream(ms, System.IO.Compression.CompressionMode.Compress, true)) { stream.Write(buffer, 0, buffer.Length); stream.Close(); } byte[] compressedData = ms.ToArray(); ms.Close(); return Convert.ToBase64String(compressedData); //将压缩后的byte[]转换为Base64String } }
posted on 2013-06-09 10:20 HOT SUMMER 阅读(1102) 评论(0) 编辑 收藏 举报