利用ICSharpCode压缩打包文件

因为项目需要打包文件,就在同事的建议下用ICSharpCode写了个打包函数.ICSharpCode的介绍就不说了.具体请到官方网站 http://www.icsharpcode.net/ 上了解.

首先引用ICSharpCode.SharpZipLib.dll,没有在这里下载:https://files.cnblogs.com/KenBlove/ICSharpCode.SharpZipLib.rar

代码实现多文件,自定义文件,整目录打包等功能.好了..奉上代码:

    /// <summary>
    /// Zips the specified zip path.
    /// </summary>
    /// <param name="strZipPath">The zip path.</param>
    /// <param name="strZipTopDirectoryPath">The zip top directory path.</param>
    /// <param name="intZipLevel">The zip level.</param>
    /// <param name="strPassword">The password.</param>
    /// <param name="filesOrDirectoriesPaths">The files or directories paths.</param>
    /// <returns></returns>
    private bool Zip(string strZipPath, string strZipTopDirectoryPath, int intZipLevel, string strPassword, string[] filesOrDirectoriesPaths)
    {
        try
        {
            List<string> AllFilesPath = new List<string>();
            if (filesOrDirectoriesPaths.Length > 0) // get all files path
            {
                for (int i = 0; i < filesOrDirectoriesPaths.Length; i++)
                {
                    if (File.Exists(filesOrDirectoriesPaths[i]))
                    {
                        AllFilesPath.Add(filesOrDirectoriesPaths[i]);
                    }
                    else if (Directory.Exists(filesOrDirectoriesPaths[i]))
                    {
                        GetDirectoryFiles(filesOrDirectoriesPaths[i], AllFilesPath);
                    }
                }
            }

            if (AllFilesPath.Count > 0)
            {

                ZipOutputStream zipOutputStream = new ZipOutputStream(File.Create(strZipPath));
                zipOutputStream.SetLevel(intZipLevel);
                zipOutputStream.Password = strPassword;

                for (int i = 0; i < AllFilesPath.Count; i++)
                {
                    string strFile = AllFilesPath[i].ToString();
                    try
                    {
                        if (strFile.Substring(strFile.Length - 1) == "\\") //folder
                        {
                            string strFileName = strFile.Replace(strZipTopDirectoryPath, "");
                            if (strFileName.StartsWith("\\"))
                            {
                                strFileName = strFileName.Substring(1);
                            }
                            ZipEntry entry = new ZipEntry(strFileName);
                            entry.DateTime = DateTime.Now;
                            zipOutputStream.PutNextEntry(entry);
                        }
                        else //file
                        {
                            FileStream fs = File.OpenRead(strFile);

                            byte[] buffer = new byte[fs.Length];
                            fs.Read(buffer, 0, buffer.Length);

                            string strFileName = strFile.Replace(strZipTopDirectoryPath, "");
                            if (strFileName.StartsWith("\\"))
                            {
                                strFileName = strFileName.Substring(1);
                            }
                            ZipEntry entry = new ZipEntry(strFileName);
                            entry.DateTime = DateTime.Now;
                            zipOutputStream.PutNextEntry(entry);
                            zipOutputStream.Write(buffer, 0, buffer.Length);

                            fs.Close();
                            fs.Dispose();
                        }
                    }
                    catch
                    {
                        continue;
                    }
                }

                zipOutputStream.Finish();
                zipOutputStream.Close();

                return true;
            }
            else
            {
                return false;
            }
        }
        catch
        {
            return false;
        }
    }

    /// <summary>
    /// Gets the directory files.
    /// </summary>
    /// <param name="strParentDirectoryPath">The parent directory path.</param>
    /// <param name="AllFilesPath">All files path.</param>
    private void GetDirectoryFiles(string strParentDirectoryPath, List<string> AllFilesPath)
    {
        string[] files = Directory.GetFiles(strParentDirectoryPath);
        for (int i = 0; i < files.Length; i++)
        {
            AllFilesPath.Add(files[i]);
        }
        string[] directorys = Directory.GetDirectories(strParentDirectoryPath);
        for (int i = 0; i < directorys.Length; i++)
        {
            GetDirectoryFiles(directorys[i], AllFilesPath);
        }
        if (files.Length == 0 && directorys.Length == 0) //empty folder
        {
            AllFilesPath.Add(strParentDirectoryPath);
        }
    }

调用也很简单:

        string strZipPath = @"C:\Documents and Settings\ken\Desktop\Task1\ZipTest.zip";
        string strZipTopDirectoryPath = @"C:\Documents and Settings\ken\Desktop\Task1\";
        int intZipLevel = 6;
        string strPassword = "";
        string[] filesOrDirectoriesPaths = new string[] { @"C:\Documents and Settings\ken\Desktop\Task1\zipdemo\11\", 
            @"C:\Documents and Settings\ken\Desktop\Task1\zipdemo\Bin\ICSharpCode.SharpZipLib.dll" };
        Zip(strZipPath, strZipTopDirectoryPath, intZipLevel, strPassword, filesOrDirectoriesPaths);

就这样.如果需要尽管拿走.

(代码参考过网络上的资源,如有冒犯,莫怪莫怪~)

由于上边代码对于大文件是一次读入，所以遇到大文件的时候是占用资源比较紧张。所以改为分段读取，每次读取64K数据：

                            string fileName = file.Replace(zipTopDirectory, "");
                            if (fileName.StartsWith("\\"))
                                fileName = fileName.Substring(1);
                            ZipEntry entry = new ZipEntry(fileName);
                            entry.DateTime = DateTime.Now;
                            zipedStream.PutNextEntry(entry);
                            for (long j = 0; j < fs.Length; j += 65536)
                            {
                                int byteLength = 65536;
                                if ((fs.Length - j) < 65536)
                                {
                                    byteLength = (int)(fs.Length - j);
                                }

                                byte[] buffer = new byte[byteLength];
                                fs.Read(buffer, 0, byteLength);
                                zipedStream.Write(buffer, 0, byteLength);
                            }
                            fs.Close();