C# GZip对字符串压缩和解压-白红宇

C# GZip对字符串压缩和解压

阅读量：5153 次

发布时间：2019-06-13

本文共 2944 字，大约阅读时间需要 9 分钟。

public class CGZipUtil    {        ///         /// 解压        /// 
        ///         /// 
             public static DataSet GetDatasetByString(string Value)        {            DataSet ds = new DataSet();            string CC = GZipDecompressString(Value);            System.IO.StringReader Sr = new StringReader(CC);            ds.ReadXml(Sr);            return ds;        }        ///         /// 根据DATASET压缩字符串        /// 
        ///         /// 
             public static string GetStringByDataset(string ds)        {            return GZipCompressString(ds);        }        ///         /// 将传入字符串以GZip算法压缩后，返回Base64编码字符        /// 
        /// 需要压缩的字符串        /// 
     
      压缩后的Base64编码的字符串
             public static string GZipCompressString(string rawString)        {            if (string.IsNullOrEmpty(rawString) || rawString.Length == 0)            {                return "";            }            else            {                byte[] rawData = System.Text.Encoding.UTF8.GetBytes(rawString.ToString());                byte[] zippedData = Compress(rawData);                return (string)(Convert.ToBase64String(zippedData));            }        }        ///         /// GZip压缩        /// 
        ///         /// 
             static byte[] Compress(byte[] rawData)        {            MemoryStream ms = new MemoryStream();            GZipStream compressedzipStream = new GZipStream(ms, CompressionMode.Compress, true);            compressedzipStream.Write(rawData, 0, rawData.Length);            compressedzipStream.Close();            return ms.ToArray();        }        ///         /// 将传入的二进制字符串资料以GZip算法解压缩        /// 
        /// 经GZip压缩后的二进制字符串        /// 
     
      原始未压缩字符串
             public static string GZipDecompressString(string zippedString)        {            if (string.IsNullOrEmpty(zippedString) || zippedString.Length == 0)            {                return "";            }            else            {                byte[] zippedData = Convert.FromBase64String(zippedString.ToString());                return (string)(System.Text.Encoding.UTF8.GetString(Decompress(zippedData)));            }        }        ///         /// ZIP解压        /// 
        ///         /// 
             public static byte[] Decompress(byte[] zippedData)        {            MemoryStream ms = new MemoryStream(zippedData);            GZipStream compressedzipStream = new GZipStream(ms, CompressionMode.Decompress);            MemoryStream outBuffer = new MemoryStream();            byte[] block = new byte[1024];            while (true)            {                int bytesRead = compressedzipStream.Read(block, 0, block.Length);                if (bytesRead <= 0)                    break;                else                    outBuffer.Write(block, 0, bytesRead);            }            compressedzipStream.Close();            return outBuffer.ToArray();        }    }