C# 压缩和解压web空间中的所有文件

using System;
using ICSharpCode.SharpZipLib;
using ICSharpCode.SharpZipLib.Checksums;
using System.IO;
using ICSharpCode.SharpZipLib.Zip;
using System.Collections;


/// <summary>
/// Common 的摘要说明。
/// </summary>
public class commRar
{
    public commRar()
    {
        //
        // TODO: 在此处添加构造函数逻辑
        //
    }

    /// <summary>
    /// 压缩文件 http://www.my400800.cn
    /// </summary>
    /// <param name="sourceFileNames">压缩文件名称集合</param>
    /// <param name="destFileName">压缩后文件名称</param>
    /// <param name="password">密码</param>
    public static void zipFile(string path, string destFileName)
    {
        Crc32 crc = new Crc32();
        string strparpath = path;

        //定义
        System.IO.DirectoryInfo myDir = new DirectoryInfo(path);
        // 0 - store only to 9 - means best compression
        if (myDir.Exists == true)
        {
            System.IO.FileInfo[] myFileAry = myDir.GetFiles();

            ZipOutputStream s = new ZipOutputStream(File.Create(destFileName));
            s.Password = "";
            s.SetLevel(6);

            //循环提取文件夹下每一个文件,提取信息,
            foreach (FileInfo objFiles in myFileAry)
            {
                if (objFiles.FullName.IndexOf(".rar") > 0) continue;
                FileStream fs = File.OpenRead(objFiles.FullName);
                byte[] buffer = new byte[fs.Length];
                fs.Read(buffer, 0, buffer.Length);
                ZipEntry entry = new ZipEntry(objFiles.FullName.Substring(path.Length));
                entry.DateTime = DateTime.Now;
                entry.Size = fs.Length;
                fs.Close();
                crc.Reset();
                crc.Update(buffer);
                entry.Crc = crc.Value;
                s.PutNextEntry(entry);
                s.Write(buffer, 0, buffer.Length);
            }
            foreach (DirectoryInfo objdire in myDir.GetDirectories())
            {
                zipFolder(s, objdire.FullName, crc, strparpath);

            }


            s.Finish();
            s.Close();
        }
    }

    private static void zipFolder(ZipOutputStream s, string path, Crc32 crc, string strparpath)
    {

        //定义
        System.IO.DirectoryInfo myDir = new DirectoryInfo(path);
        System.IO.FileInfo[] myFileAry = myDir.GetFiles();
        //循环提取文件夹下每一个文件,提取信息,
        foreach (FileInfo objFiles in myFileAry)
        {
            if (objFiles.FullName.IndexOf(".rar") > 0) continue;
            FileStream fs = File.OpenRead(objFiles.FullName);
            byte[] buffer = new byte[fs.Length];
            fs.Read(buffer, 0, buffer.Length);
            ZipEntry entry = new ZipEntry(objFiles.FullName.Substring(strparpath.Length));
            entry.DateTime = DateTime.Now;
            entry.Size = fs.Length;
            fs.Close();
            crc.Reset();
            crc.Update(buffer);
            entry.Crc = crc.Value;
            s.PutNextEntry(entry);
            s.Write(buffer, 0, buffer.Length);
        }

    }





    /// <summary>
    /// 解压文件
    /// </summary>
    /// <param name="sourceFileName">被解压文件名称</param>
    /// <param name="destPath">解压后文件目录</param>
    /// <param name="password">密码</param>
    public static void unzipFile(string sourceFileName, string destPath, string fileType)
    {
        ZipInputStream s = new ZipInputStream(File.OpenRead(sourceFileName));
        ZipEntry theEntry;
        ArrayList al = new ArrayList();
        string strRootpath = "";
        while ((theEntry = s.GetNextEntry()) != null)
        {
            string fileName = (theEntry.Name);
            if (fileName != "")
            {
                fileName = destPath + "\\" + fileName;
                strRootpath = Path.GetDirectoryName(fileName);
                if (!Directory.Exists(strRootpath))
                {
                    Directory.CreateDirectory(strRootpath);
                }
                FileStream streamWriter = File.Create(fileName);
                int size = 2048;
                byte[] data = new byte[2048];
                s.Password = "";
                while (true)
                {
                    size = s.Read(data, 0, data.Length);
                    if (size > 0)
                    {
                        streamWriter.Write(data, 0, size);
                    }
                    else
                    {
                        break;
                    }
                }
                streamWriter.Close();
            }

        }
        s.Close();

    }

}

 

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