C#下使用SevenZipSharp压缩解压文本.doc

C#下使用SevenZipSharp压缩解压文本2012-1-30网上搜来的大部分文档都是使用7zip对文件进行压缩解压的例子，自己需要在内存中对字符串进行压缩解压操作。经过摸索实践，终于搞定。SevenZipSharp相关文档下载地址：/releases/view/512541. 解决方案中添加引用：SevenZipSharp.dll2. 复制粘贴两个dll文件：7z.dll 7z64.dll，并将属性“复制到输出目录”修改为“如果较新则复制”。3. 工具类实现代码如下：using System;using System.Text;using SevenZip;using System.IO;namespace util class SevenZipUtil / / 压缩字符串 / / 源字符串 / 压缩后字节数组 public static byte Compress(string input) byte compressed = null; SevenZipCompressor compressor = new SevenZipCompressor(); compressor.CompressionMethod = CompressionMethod.Ppmd; compressor.CompressionLevel = CompressionLevel.High; using (MemoryStream msin = GetUTF8MemorySteam(input) using (MemoryStream msout = new MemoryStream() compressor.CompressStream(msin, msout); msout.Position = 0; compressed = new bytemsout.Length; msout.Read(compressed, 0, compressed.Length); /* Console.WriteLine(compressed: ); foreach (byte b in compressed) Console.Write(b); Console.Write( ); Console.WriteLine(); */ return compressed; / / 获取输入字符串的UTF8编码 / / 源字符串 / 内存数据流 private static MemoryStream GetUTF8MemorySteam(string input) MemoryStream ms = new MemoryStream(); byte bytes = Encoding.UTF8.GetBytes(input); ms.Write(bytes, 0, bytes.Length); return ms; / / 解压字节数组 / / 源字节数组 / 解压后字符串 public static string Decompress(byte input) /* Console.WriteLine(input:); foreach (byte b in input) Console.Write(b); Console.Write( ); Console.WriteLine(); */ byte uncompressedbuffer = null; using (MemoryStream msin = new MemoryStream() msin.Write(input, 0, input.Length); uncompressedbuffer = new byteinput.Length; msin.Position = 0; using (SevenZipExtractor extractor = new SevenZipExtractor(msin) using (MemoryStream msout = new MemoryStream() extractor.ExtractFile(0, msout); msout.Position = 0; uncompressedbuffer = new bytemsout.Length; msout.Read(uncompressedbuffer,