.Net使用SharpZip解压缩文件

最近，项目中使用到了上传压缩文件，文件上传到服务器后，肯定要解压，取出其中的文件才能使用，在这里做一个小结，Get这个新技能。

首先在使用NuGet管理程序在项目中添加引用ICSharpCode.SharpZipLib.dll.

在项目公共文件夹中添加SharpZip类。

using ICSharpCode.SharpZipLib.Checksums;
using ICSharpCode.SharpZipLib.Zip;
using Microsoft.Win32;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace App.Common.SharpZip
{

    public class SharpZip
    {
        public SharpZip() { }

        /// <summary>  
        /// 解压缩  
        /// </summary>  
        /// <param name="file">待解压文件名(包含物理路径)</param>  
        /// <param name="dir"> 解压到哪个目录中(包含物理路径)</param>  
        public static bool UnpackFiles(string file, string dir)
        {
            try
            {
                if (!Directory.Exists(dir))
                {
                    Directory.CreateDirectory(dir);
                }
                ZipInputStream s = new ZipInputStream(File.OpenRead(file));
                ZipEntry theEntry;
                while ((theEntry = s.GetNextEntry()) != null)
                {
                    string directoryName = Path.GetDirectoryName(theEntry.Name);
                    string fileName = Path.GetFileName(theEntry.Name);
                    if (directoryName != String.Empty)
                    {
                        Directory.CreateDirectory(dir + directoryName);
                    }
                    if (fileName != String.Empty)
                    {
                        FileStream streamWriter = File.Create(dir + 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();
                    }
                }
                s.Close();
                return true;
            }
            catch (Exception)
            {
                throw;
            }
        }
    }
}

接着就可以方便的使用这个新技能了

/// <summary>
        /// 解压缩
        /// </summary>
        /// <returns></returns>
        public ActionResult UnPack()
        {
            ///.....
            ///


            var fullPath = Request.MapPath("/File/Temp/test.zip");
            var unpackPath = Request.MapPath("/File/Temp/");
            var unpackResult = SharpZip.UnpackFiles(fullPath, unpackPath);
            if (unpackResult)
            {
                ///......
                ///
            }


            ///.....
            ///
            return Content("success");
        }