C#

前言

本篇主要记录：VS2019 WinFrm桌面应用程序调用SharpZipLib，实现文件的简单压缩和解压缩功能。

SharpZipLib 开源地址戳这里。

准备工作

搭建WinFrm前台界面

添加必要的控件，这里主要应用到GroupBox、Label、TextBox、CheckBox和Button，如下图

核心代码

构造ZipHelper类

代码如下：

using ICSharpCode.SharpZipLib.Checksum;
using ICSharpCode.SharpZipLib.Zip;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ZipUnzip
{
    class ZipHelper
    {
        private string rootPath = string.Empty;

        #region 压缩  

        /// <summary>   
        /// 递归压缩文件夹的内部方法   
        /// </summary>   
        /// <param name="folderToZip">要压缩的文件夹路径</param>   
        /// <param name="zipStream">压缩输出流</param>   
        /// <param name="parentFolderName">此文件夹的上级文件夹</param>   
        /// <returns></returns>   
        private bool ZipDirectory(string folderToZip, ZipOutputStream zipStream, string parentFolderName)
        {
            bool result = true;
            string[] folders, files;
            ZipEntry ent = null;
            FileStream fs = null;
            Crc32 crc = new Crc32();

            try
            {
                string entName = folderToZip.Replace(this.rootPath, string.Empty) + "/";
                //Path.Combine(parentFolderName, Path.GetFileName(folderToZip) + "/")
                ent = new ZipEntry(entName);
                zipStream.PutNextEntry(ent);
                zipStream.Flush();

                files = Directory.GetFiles(folderToZip);
                foreach (string file in files)
                {
                    fs = File.OpenRead(file);

                    byte[] buffer = new byte[fs.Length];
                    fs.Read(buffer, 0, buffer.Length);
                    ent = new ZipEntry(entName + Path.GetFileName(file));
                    ent.DateTime = DateTime.Now;
                    ent.Size = fs.Length;

                    fs.Close();

                    crc.Reset();
                    crc.Update(buffer);

                    ent.Crc = crc.Value;
                    zipStream.PutNextEntry(ent);
                    zipStream.Write(buffer, 0, buffer.Length);
                }

            }
            catch
            {
                result = false;
            }
            finally
            {
                if (fs != null)
                {
                    fs.Close();
                    fs.Dispose();
                }
                if (ent != null)
                {
                    ent = null;
                }
                GC.Collect();
                GC.Collect(1);
            }

            folders = Directory.GetDirectories(folderToZip);
            foreach (string folder in folders)
                if (!ZipDirectory(folder, zipStream, folderToZip))
                    return false;

            return result;
        }

        /// <summary>   
        /// 压缩文件夹    
        /// </summary>   
        /// <param name="folderToZip">要压缩的文件夹路径</param>   
        /// <param name="zipedFile">压缩文件完整路径</param>   
        /// <param name="password">密码</param>   
        /// <returns>是否压缩成功</returns>   
        public bool ZipDirectory(string folderToZip, string zipedFile, string password)
        {
            bool result = false;
            if (!Directory.Exists(folderToZip))
                return result;

            ZipOutputStream zipStream = new ZipOutputStream(File.Create(zipedFile));
            zipStream.SetLevel(6);
            if (!string.IsNullOrEmpty(password)) zipStream.Password = password;

            result = ZipDirectory(folderToZip, zipStream, "");

            zipStream.Finish();
            zipStream.Close();

            return result;
        }

        /// <summary>   
        /// 压缩文件夹   
        /// </summary>   
        /// <param name="folderToZip">要压缩的文件夹路径</param>   
        /// <param name="zipedFile">压缩文件完整路径</param>   
        /// <returns>是否压缩成功</returns>   
        public bool ZipDirectory(string folderToZip, string zipedFile)
        {
            bool result = ZipDirectory(folderToZip, zipedFile, null);
            return result;
        }

        /// <summary>   
        /// 压缩文件   
        /// </summary>   
        /// <param name="fileToZip">要压缩的文件全名</param>   
        /// <param name="zipedFile">压缩后的文件名</param>   
        /// <param name="password">密码</param>   
        /// <returns>压缩结果</returns>   
        public bool ZipFile(string fileToZip, string zipedFile, string password)
        {
            bool result = true;
            ZipOutputStream zipStream = null;
            FileStream fs = null;
            ZipEntry ent = null;

            if (!File.Exists(fileToZip))
                return false;

            try
            {
                fs = File.OpenRead(fileToZip);
                byte[] buffer = new byte[fs.Length];
                fs.Read(buffer, 0, buffer.Length);
                fs.Close();

                fs = File.Create(zipedFile);
                zipStream = new ZipOutputStream(fs);
                if (!string.IsNullOrEmpty(password)) zipStream.Password = password;
                ent = new ZipEntry(Path.GetFileName(fileToZip));
                zipStream.PutNextEntry(ent);
                zipStream.SetLevel(6);

                zipStream.Write(buffer, 0, buffer.Length);

            }
            catch
            {
                result = false;
            }
            finally
            {
                if (zipStream != null)
                {
                    zipStream.Finish();
                    zipStream.Close();
                }
                if (ent != null)
                {
                    ent = null;
                }
                if (fs != null)
                {
                    fs.Close();
                    fs.Dispose();
                }
            }
            GC.Collect();
            GC.Collect(1);

            return result;
        }

        /// <summary>   
        /// 压缩文件   
        /// </summary>   
        /// <param name="fileToZip">要压缩的文件全名</param>   
        /// <param name="zipedFile">压缩后的文件名</param>   
        /// <returns>压缩结果</returns>   
        public bool ZipFile(string fileToZip, string zipedFile)
        {
            bool result = ZipFile(fileToZip, zipedFile, null);
            return result;
        }

        /// <summary>   
        /// 压缩文件或文件夹   
        /// </summary>   
        /// <param name="fileToZip">要压缩的路径</param>   
        /// <param name="zipedFile">压缩后的文件名</param>   
        /// <param name="password">密码</param>   
        /// <returns>压缩结果</returns>   
        public bool Zip(string fileToZip, string zipedFile, string password)
        {
            bool result = false;
            if (Directory.Exists(fileToZip))
            {
                this.rootPath = Path.GetDirectoryName(fileToZip);
                result = ZipDirectory(fileToZip, zipedFile, password);
            }
            else if (File.Exists(fileToZip))
            {
                this.rootPath = Path.GetDirectoryName(fileToZip);
                result = ZipFile(fileToZip, zipedFile, password);
            }
            return result;
        }

        /// <summary>   
        /// 压缩文件或文件夹   
        /// </summary>   
        /// <param name="fileToZip">要压缩的路径</param>   
        /// <param name="zipedFile">压缩后的文件名</param>   
        /// <returns>压缩结果</returns>   
        public bool Zip(string fileToZip, string zipedFile)
        {
            bool result = Zip(fileToZip, zipedFile, null);
            return result;

        }

        #endregion

        #region 解压  

        /// <summary>   
        /// 解压功能(解压压缩文件到指定目录)   
        /// </summary>   
        /// <param name="fileToUnZip">待解压的文件</param>   
        /// <param name="zipedFolder">指定解压目标目录</param>   
        /// <param name="password">密码</param>   
        /// <returns>解压结果</returns>   
        public bool UnZip(string fileToUnZip, string zipedFolder, string password)
        {
            bool result = true;
            FileStream fs = null;
            ZipInputStream zipStream = null;
            ZipEntry ent = null;
            string fileName;

            if (!File.Exists(fileToUnZip))
                return false;

            if (!Directory.Exists(zipedFolder))
                Directory.CreateDirectory(zipedFolder);

            try
            {
                zipStream = new ZipInputStream(File.OpenRead(fileToUnZip));
                if (!string.IsNullOrEmpty(password)) zipStream.Password = password;
                while ((ent = zipStream.GetNextEntry()) != null)
                {
                    if (!string.IsNullOrEmpty(ent.Name))
                    {
                        fileName = Path.Combine(zipedFolder, ent.Name);
                        fileName = fileName.Replace('/', '\');//change by Mr.HopeGi   

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

                        fs = File.Create(fileName);
                        int size = 2048;
                        byte[] data = new byte[size];
                        while (true)
                        {
                            size = zipStream.Read(data, 0, data.Length);
                            if (size > 0)
                                fs.Write(data, 0, data.Length);
                            else
                                break;
                        }
                    }
                }
            }
            catch
            {
                result = false;
            }
            finally
            {
                if (fs != null)
                {
                    fs.Close();
                    fs.Dispose();
                }
                if (zipStream != null)
                {
                    zipStream.Close();
                    zipStream.Dispose();
                }
                if (ent != null)
                {
                    ent = null;
                }
                GC.Collect();
                GC.Collect(1);
            }
            return result;
        }

        /// <summary>   
        /// 解压功能(解压压缩文件到指定目录)   
        /// </summary>   
        /// <param name="fileToUnZip">待解压的文件</param>   
        /// <param name="zipedFolder">指定解压目标目录</param>   
        /// <returns>解压结果</returns>   
        public bool UnZip(string fileToUnZip, string zipedFolder)
        {
            bool result = UnZip(fileToUnZip, zipedFolder, null);
            return result;
        }

        #endregion
    }
}

主窗体代码如下：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace ZipUnzip
{
    public partial class FrmMain : Form
    {
        public FrmMain()
        {
            InitializeComponent();
        }

        /// <summary>
        /// Unzip/Zip Operation
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void chbZip_CheckedChanged(object sender, EventArgs e)
        {
            if (this.chbZip.Checked)
            {
                if (this.chbUnzip.Checked)
                {
                    this.chbUnzip.Checked = false;
                }
            }
        }

        /// <summary>
        /// Unzip/Zip Operation
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void chbUnzip_CheckedChanged(object sender, EventArgs e)
        {
            if (this.chbUnzip.Checked)
            {
                if (this.chbZip.Checked)
                {
                    this.chbZip.Checked = false;
                }
            }
        }

        /// <summary>
        /// Choose File Directory
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnChoose_Click(object sender, EventArgs e)
        {
            if (this.chbZip.Checked)
            {
                FolderBrowserDialog folderDialog = new FolderBrowserDialog();
                folderDialog.Description = "Choose File Directory";
                folderDialog.RootFolder = Environment.SpecialFolder.Desktop;
                DialogResult dr = folderDialog.ShowDialog(this);
                if (dr == DialogResult.OK)
                {
                    this.txtSFP.Text = folderDialog.SelectedPath;
                }
            }
            else if (this.chbUnzip.Checked)
            {
                OpenFileDialog fileDialog = new OpenFileDialog();
                fileDialog.Title = "Choose Zip Files";
                fileDialog.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.Desktop);
                DialogResult dr = fileDialog.ShowDialog(this);
                if (dr == DialogResult.OK)
                {
                    this.txtSFP.Text = fileDialog.FileName;
                }
            }
        }

        /// <summary>
        /// Zip/Unzip
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnDo_Click(object sender, EventArgs e)
        {
            // Check
            if ((!this.chbZip.Checked) & (!this.chbUnzip.Checked))
            {
                MessageBox.Show("Please choose operation type!", "Error");
                return;
            }
            // Zip
            if (this.chbZip.Checked)
            {
                try
                {
                    string src = this.txtSFP.Text;
                    string dest = AppDomain.CurrentDomain.BaseDirectory + @"zipfolderIP" + DateTime.Now.ToString("yyyyMMddHHmmss") + ".zip";
                    if (!Directory.Exists(Path.GetDirectoryName(dest)))
                    {
                        Directory.CreateDirectory(Path.GetDirectoryName(dest));
                    }
                    ZipHelper zipHelper = new ZipHelper();
                    bool flag = zipHelper.Zip(src, dest);
                    if (flag)
                    {
                        SaveFileDialog fileDialog = new SaveFileDialog();
                        fileDialog.Title = "Save Zip Package";
                        fileDialog.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.Desktop);
                        fileDialog.FileName = Path.GetFileName(dest);
                        if (fileDialog.ShowDialog() == DialogResult.OK)
                        {
                            File.Copy(dest, fileDialog.FileName, true);
                            this.txtDFP.Text = fileDialog.FileName;
                        }
                        MessageBox.Show(this, "Zip Success!", "Info", MessageBoxButtons.OK);
                    }
                    else
                    {
                        MessageBox.Show(this, "Zip Failed", "Error", MessageBoxButtons.OK);
                    }
                }
                catch (Exception ex)
                {
                    MessageBox.Show("Zip Failed, Err info[" + ex.Message + "]", "Error");
                }

            }

            // Unzip
            if (this.chbUnzip.Checked)
            {
                try
                {
                    FolderBrowserDialog folderDialog = new FolderBrowserDialog();
                    folderDialog.Description = "Choose Unzip Directory";
                    folderDialog.RootFolder = Environment.SpecialFolder.Desktop;
                    DialogResult dr = folderDialog.ShowDialog(this);
                    if (dr == DialogResult.OK)
                    {
                        string destPath = folderDialog.SelectedPath + @"" + Path.GetFileNameWithoutExtension(this.txtDFP.Text);
                        ZipHelper zipHelper = new ZipHelper();
                        zipHelper.UnZip(this.txtSFP.Text, destPath);
                        this.txtDFP.Text = destPath;
                    }
                    MessageBox.Show("Unzip Success!", "Info");
                }
                catch (Exception ex)
                {
                    MessageBox.Show("Unzip Failed, Err info[" + ex.Message + "]", "Error");
                }

            }
        }
    }
}

实现效果

  作者：Jeremy.Wu
  出处：https://www.cnblogs.com/jeremywucnblog/
  本文版权归作者和博客园共有，欢迎转载，但未经作者同意必须保留此段声明，且在文章页面明显位置给出原文连接，否则保留追究法律责任的权利。