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【凤凰社原创】.Net压缩工具类

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以下是.NET压缩工具类的源码,可以拿去直接用,有兴趣的可以参考一下

using System;
using System.Collections.Generic;
using System.Text;
using ICSharpCode.SharpZipLib.Zip;
using System.IO;
using ICSharpCode.SharpZipLib.Checksums;
using SmartCCPB;
public class ZipUtil
{
    /// <summary>
    /// 递归压缩文件夹方法
    /// </summary>
    /// <param name="FolderToZip"></param>
    /// <param name="s"></param>
    /// <param name="ParentFolderName"></param>
    private bool ZipFileDictory(string FolderToZip, ZipOutputStream s, string ParentFolderName)
    {
        bool res = true;
        string[] folders, filenames;
        ZipEntry entry = null;
        FileStream fs = null;
        Crc32 crc = new Crc32();
        try
        {
            //创建当前文件夹
            entry = new ZipEntry(Path.Combine(ParentFolderName, Path.GetFileName(FolderToZip) + "/")); //加上 “/” 才会当成是文件夹创建
            s.PutNextEntry(entry);
            s.Flush();

            //先压缩文件,再递归压缩文件夹
            filenames = Directory.GetFiles(FolderToZip);
            foreach (string file in filenames)
            {
                //打开压缩文件
                fs = File.OpenRead(file);
                byte[] buffer = new byte[fs.Length];
                fs.Read(buffer, 0, buffer.Length);
                entry = new ZipEntry(Path.Combine(ParentFolderName, Path.GetFileName(FolderToZip) + "/" + Path.GetFileName(file)));
                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);
            }
        }
        catch(Exception ex)
        {
           
            res = false;
            throw ex;
        }
        finally
        {
            if (fs != null)
            {
                fs.Close();
                fs = null;
            }
            if (entry != null)
            {
                entry = null;
            }
            GC.Collect();
            GC.Collect(1);
        }


        folders = Directory.GetDirectories(FolderToZip);
        foreach (string folder in folders)
        {
            if (!ZipFileDictory(folder, s, Path.Combine(ParentFolderName, Path.GetFileName(FolderToZip))))
            {
                return false;
            }
        }

        return res;
    }

    /// <summary>
    /// 压缩目录
    /// </summary>
    /// <param name="FolderToZip">待压缩的文件夹,全路径格式</param>
    /// <param name="ZipedFile">压缩后的文件名,全路径格式</param>
    /// <returns></returns>
    private bool ZipFileDictory(string FolderToZip, string ZipedFile, int level)
    {
        bool res;
        if (!Directory.Exists(FolderToZip))
        {
            return false;
        }

        ZipOutputStream s = new ZipOutputStream(File.Create(ZipedFile));
        s.SetLevel(level);
        res = ZipFileDictory(FolderToZip, s, "");

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

        return res;
    }

    /// <summary>
    /// 压缩文件
    /// </summary>
    /// <param name="FileToZip">要进行压缩的文件名</param>
    /// <param name="ZipedFile">压缩后生成的压缩文件名</param>
    /// <returns></returns>
    private bool ZipFile(string FileToZip, string ZipedFile, int level)
    {
        //如果文件没有找到,则报错

        if (!File.Exists(FileToZip))
        {
            throw new System.IO.FileNotFoundException("指定要压缩的文件: " + FileToZip + " 不存在!");
        }
        //FileStream fs = null;

        FileStream ZipFile = null;
        ZipOutputStream ZipStream = null;
        ZipEntry ZipEntry = null;
        bool res = true;
        try
        {
            ZipFile = File.OpenRead(FileToZip);
            byte[] buffer = new byte[ZipFile.Length];
            ZipFile.Read(buffer, 0, buffer.Length);
            ZipFile.Close();

            ZipFile = File.Create(ZipedFile);
            ZipStream = new ZipOutputStream(ZipFile);
            ZipEntry = new ZipEntry(Path.GetFileName(FileToZip));
            ZipStream.PutNextEntry(ZipEntry);
            ZipStream.SetLevel(level);

            ZipStream.Write(buffer, 0, buffer.Length);
        }
        catch(Exception ex)
        {
            res = false;
            throw ex;
        }
        finally
        {
            if (ZipEntry != null)
            {
                ZipEntry = null;
            }
            if (ZipStream != null)
            {
                ZipStream.Finish();
                ZipStream.Close();
            }
            if (ZipFile != null)
            {
                ZipFile.Close();
                ZipFile = null;
            }
            GC.Collect();
            GC.Collect(1);
        }

        return res;
    }

    /// <summary>
    /// 压缩文件 和 文件夹
    /// </summary>
    /// <param name="FileToZip">待压缩的文件或文件夹,全路径格式</param>
    /// <param name="ZipedFile">压缩后生成的压缩文件名,全路径格式</param>
    /// <returns></returns>
    public bool Zip(String FileToZip, String ZipedFile, int level)
    {
        if (Directory.Exists(FileToZip))
        {
            return ZipFileDictory(FileToZip, ZipedFile, level);
        }
        else if (File.Exists(FileToZip))
        {
            return ZipFile(FileToZip, ZipedFile, level);
        }
        else
        {
            return false;
        }
    }

    /// <summary>
    /// 解压功能(解压压缩文件到指定目录)
    /// </summary>
    /// <param name="FileToUpZip">待解压的文件</param>
    /// <param name="ZipedFolder">指定解压目标目录</param>
    public void UnZip(string FileToUpZip, string ZipedFolder)
    {
        if (!File.Exists(FileToUpZip))
        {
            return;
        }

        if (!Directory.Exists(ZipedFolder))
        {
            Directory.CreateDirectory(ZipedFolder);
        }

        ZipInputStream s = null;
        ZipEntry theEntry = null;

        string fileName;
        FileStream streamWriter = null;
        try
        {
            s = new ZipInputStream(File.OpenRead(FileToUpZip));
            while ((theEntry = s.GetNextEntry()) != null)
            {
                if (theEntry.Name != String.Empty)
                {
                    fileName = Path.Combine(ZipedFolder, theEntry.Name);
                    ///判断文件路径是否是文件夹

                    if (fileName.EndsWith("/") || fileName.EndsWith("\\"))
                    {
                        Directory.CreateDirectory(fileName);
                        continue;
                    }

                    streamWriter = File.Create(fileName);
                    int size = 2048;
                    byte[] data = new byte[2048];
                    while (true)
                    {
                        size = s.Read(data, 0, data.Length);
                        if (size > 0)
                        {
                            streamWriter.Write(data, 0, size);
                        }
                        else
                        {
                            break;
                        }
                    }
                    streamWriter.Close();
                }
            }
        }
        finally
        {
            if (streamWriter != null)
            {
                streamWriter.Close();
                streamWriter = null;
            }
            if (theEntry != null)
            {
                theEntry = null;
            }
            if (s != null)
            {
                s.Close();
                s = null;
            }
            GC.Collect();
            GC.Collect(1);
        }
    }

    /// <summary>
    /// 解压功能(解压压缩文件到指定目录)
    /// </summary>
    /// <param name="FileToUpZip">待解压的文件</param>
    /// <param name="ZipedFolder">指定解压目标目录</param>
    public void UnZip(string FileToUpZip, string ZipedFolder, frmUpdate frm)
    {
        var canReadAll = true;
        int lengthIndex = 0;
        int lengthAll = 0;
        try
        {
            lengthAll = GetZipFileCount(FileToUpZip, ZipedFolder);
        }
        catch(Exception ex)
        {
            lengthAll = 2300;
            canReadAll = false;
            throw ex;
        }

        if (!File.Exists(FileToUpZip))
        {
            return;
        }

        if (!Directory.Exists(ZipedFolder))
        {
            Directory.CreateDirectory(ZipedFolder);
        }

        ZipInputStream s = null;
        ZipEntry theEntry = null;

        string fileName;
        FileStream streamWriter = null;
        try
        {
            s = new ZipInputStream(File.OpenRead(FileToUpZip));
           
            while ((theEntry = s.GetNextEntry()) != null)
            {
                if (theEntry.Name != String.Empty)
                {
                    fileName = Path.Combine(ZipedFolder, theEntry.Name);
                    try {
                        var fileNamelist=fileName.Split('/');
                        if (fileNamelist[1] != ""&& fileNamelist[1]!=null) { 
                        if (Directory.Exists(fileNamelist[0]) == false)//如果不存在就创建file文件夹
                        {
                            Directory.CreateDirectory(fileNamelist[0]);
                        }
                        }
                    }
                    catch { }
                    //判断文件路径是否是文件夹
                    if (fileName.EndsWith("/") || fileName.EndsWith("\\"))
                    {
                        Directory.CreateDirectory(fileName);
                        continue;
                    }

                    lengthIndex++;

                    int jindu = (int)(lengthIndex * 1000 / (double)lengthAll * 0.1) + 700;
                    if (jindu <= 799)
                    {
                        frm.UpdateProgressBar(jindu);
                        if (canReadAll)
                        {
                            frm.UpdateLable("Unpacking... [" + lengthIndex + "/" + lengthAll + "] " + (jindu / 10.0).ToString("0.0") + "%");
                        }
                        else
                        {
                            frm.UpdateLable("Unpacking... [" + lengthIndex + "] " + (jindu / 10.0).ToString("0.0") + "%");
                        }
                    }
                    else
                    {
                        frm.UpdateProgressBar(799);
                        if (canReadAll)
                        {
                            frm.UpdateLable("Unpacking... [" + lengthIndex + "/" + lengthAll + "] " + "79.9%");
                        }
                        else
                        {
                            frm.UpdateLable("Unpacking... [" + lengthIndex + "] " + "79.9%");
                        }
                    }

                    streamWriter = File.Create(fileName);
                    int size = 2048;
                    byte[] data = new byte[2048];
                    while (true)
                    {
                        size = s.Read(data, 0, data.Length);
                        if (size > 0)
                        {
                            streamWriter.Write(data, 0, size);
                        }
                        else
                        {
                            break;
                        }
                    }
                    streamWriter.Close();
                }
            }
        }
        finally
        {
            if (streamWriter != null)
            {
                streamWriter.Close();
                streamWriter = null;
            }
            if (theEntry != null)
            {
                theEntry = null;
            }
            if (s != null)
            {
                s.Close();
                s = null;
            }
            GC.Collect();
            GC.Collect(1);
        }
    }

    /// <summary>
    /// 获取压缩文件里面的文件数量
    /// </summary>
    /// <param name="FileToUpZip">待解压的文件</param>
    public int GetZipFileCount(string FileToUpZip, string ZipedFolder)
    {
        int fileCount = 0;

        if (!File.Exists(FileToUpZip))
        {
            return -1;
        }

        ZipInputStream s = null;
        ZipEntry theEntry = null;
        string fileName;

        try
        {
            s = new ZipInputStream(File.OpenRead(FileToUpZip));
            while ((theEntry = s.GetNextEntry()) != null)
            {
                if (theEntry.Name != String.Empty)
                {
                    fileName = Path.Combine(ZipedFolder, theEntry.Name);
                    //判断文件路径是否是文件夹
                    if (fileName.EndsWith("/") || fileName.EndsWith("\\"))
                    {
                        Directory.CreateDirectory(fileName);
                        continue;
                    }

                    fileCount++;
                }
            }
        }
        finally
        {
            if (theEntry != null)
            {
                theEntry = null;
            }
            if (s != null)
            {
                s.Close();
                s = null;
            }
            GC.Collect();
            GC.Collect(1);
        }

        return fileCount;
    }
}

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