C# 解压缩工具类GZip

using System;
using System.Collections.Generic;
using System.IO;
using System.IO.Compression;
using System.Linq;
using System.Text;namespace 落地页测试代码
{
public class GZip
{
/// <summary>
/// 压缩
/// </summary>
/// <param name="text">文本</param>
public static string Compress(string text)
{
if (text=="")
return string.Empty;
byte[] buffer = Encoding.UTF8.GetBytes(text);
return Convert.ToBase64String(Compress(buffer));
} /// <summary>
/// 解压缩
/// </summary>
/// <param name="text">文本</param>
public static string Decompress(string text)
{
if (text=="")
return string.Empty;
byte[] buffer = Convert.FromBase64String(text);
using (var ms = new MemoryStream(buffer))
{
using (var zip = new GZipStream(ms, CompressionMode.Decompress))
{
using (var reader = new StreamReader(zip))
{
return reader.ReadToEnd();
}
}
}
} /// <summary>
/// 压缩
/// </summary>
/// <param name="buffer">字节流</param>
public static byte[] Compress(byte[] buffer)
{
if (buffer == null)
return null;
using (var ms = new MemoryStream())
{
using (var zip = new GZipStream(ms, CompressionMode.Compress, true))
{
zip.Write(buffer, , buffer.Length);
}
return ms.ToArray();
}
} /// <summary>
/// 解压缩
/// </summary>
/// <param name="buffer">字节流</param>
public static byte[] Decompress(byte[] buffer)
{
if (buffer == null)
return null;
return Decompress(new MemoryStream(buffer));
} /// <summary>
/// 压缩
/// </summary>
/// <param name="stream">流</param>
public static byte[] Compress(Stream stream)
{
if (stream == null || stream.Length == )
return null;
return Compress(StreamToBytes(stream));
} /// <summary>
/// 解压缩
/// </summary>
/// <param name="stream">流</param>
public static byte[] Decompress(Stream stream)
{
if (stream == null || stream.Length == )
return null;
using (var zip = new GZipStream(stream, CompressionMode.Decompress))
{
using (var reader = new StreamReader(zip))
{
return Encoding.UTF8.GetBytes(reader.ReadToEnd());
}
}
}
/// <summary>
/// 流转换为字节流
/// </summary>
/// <param name="stream">流</param>
public static byte[] StreamToBytes(Stream stream)
{
stream.Seek(, SeekOrigin.Begin);
var buffer = new byte[stream.Length];
stream.Read(buffer, , buffer.Length);
return buffer;
}
}
}