GZip、Deflate压缩算法对应的C#压缩解压函数
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GZip、Deflate压缩算法对应的C#压缩解压函数
///
/// GZip解压函数
///
///
///
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();
}
}
///
/// GZip压缩函数
///
///
///
public byte[] GZipCompress(byte[] data)
{
using (MemoryStream stream = new MemoryStream())
{
using (GZipStream gZipStream = new GZipStream(stream, press))
{
gZipStream.Write(data, 0, data.Length);
gZipStream.Close();
}
return stream.ToArray();
}
}
///
/// Deflate解压函数
/// JS:var details = eval('(' +
utf8to16(zip_depress(base64decode(hidEnCode.value))) + ')')对应的C#压缩方法
///
///
///
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
(pression.DeflateStream stream = new
pression.DeflateStream(ms,
pressionMode.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
}
}
}
///
/// Deflate压缩函数
///
///
///
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
(pression.DeflateStream stream = new
pression.DeflateStream(ms,
press, 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
}
}