gzip字符串压缩，解压缩

xx  using System.IO.Compression;

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public class StringCompress     {         /// <summary>          /// 字符串压缩          /// </summary>          /// <param name="strSource"></param>          /// <returns></returns>          public static byte[] Compress(byte[] data)         {             MemoryStream ms = null;             GZipStream zip = null;               try             {                 ms = new MemoryStream();                 zip = new GZipStream(ms, CompressionMode.Compress, true);                 zip.Write(data, 0, data.Length);                 zip.Close();                 byte[] buffer = new byte[ms.Length];                 ms.Position = 0;                 ms.Read(buffer, 0, buffer.Length);                 ms.Close();                 return buffer;               }             catch (Exception e)             {                 Inf.DevLib.Diagnostics.AppTraceLog.WriteException(e);                 return null;             }             finally {                 if (zip != null)                 {                     zip.Close();                 }                 if (ms != null)                 {                     ms.Close();                 }             }         }           /// <summary>          /// 字符串解压缩          /// </summary>          /// <param name="strSource"></param>          /// <returns></returns>          public static byte[] Decompress(byte[] data)         {             MemoryStream ms = null;             GZipStream zip = null;             MemoryStream msreader = null;             try             {                 ms = new MemoryStream(data);                 zip = new GZipStream(ms, CompressionMode.Decompress, true);                 msreader = new MemoryStream();                 byte[] buffer = new byte[0x1000];                 while (true)                 {                     int reader = zip.Read(buffer, 0, buffer.Length);                     if (reader <= 0)                     {                         break;                     }                     msreader.Write(buffer, 0, reader);                 }                 zip.Close();                 ms.Close();                 msreader.Position = 0;                 buffer = msreader.ToArray();                 msreader.Close();                 return buffer;             }             catch (Exception e)             {                 Inf.DevLib.Diagnostics.AppTraceLog.WriteException(e);                 return null;             }             finally {                 if (zip != null)                 {                     zip.Close();                 }                 if (ms != null)                 {                     ms.Close();                 }                 if (msreader != null)                 {                     msreader.Close();                 }             }         }           public static string CompressString(string str)         {             string compressString = "";             byte[] compressBeforeByte = Encoding.GetEncoding("UTF-8").GetBytes(str);             byte[] compressAfterByte = Compress(compressBeforeByte);             if (compressAfterByte != null)             {                 compressString = Convert.ToBase64String(compressAfterByte);             }             return compressString;         }           public static string DecompressString(string str)         {             string compressString = "";              byte[] compressBeforeByte = Convert.FromBase64String(str);             byte[] compressAfterByte = Decompress(compressBeforeByte);             if (compressAfterByte != null)             {                 compressString = Encoding.GetEncoding("UTF-8").GetString(compressAfterByte);             }                           return compressString;         }           /// <summary>          /// 解压          /// </summary>          /// <param name="param"></param>          /// <returns></returns>          public static string DecompressZlib(string param)         {             string commonString = "";             byte[] buffer = Convert.FromBase64String(param);             MemoryStream ms = new MemoryStream(buffer);             Stream sm = new ICSharpCode.SharpZipLib.Zip.ZipInputStream(ms);             //这里要指明要读入的格式，要不就有乱码              StreamReader reader = new StreamReader(sm, System.Text.Encoding.UTF8);             try             {                 commonString = reader.ReadToEnd();             }             finally             {                 sm.Close();                 ms.Close();             }             return commonString;         }     }