C#打包zip文件可以调用现成的第三方dll,事半功倍,而且该dll完全免费,下载地址:SharpZipLib
下载完解压缩后,把 ICSharpCode.SharpZipLib.dll 拷贝到当前项目的目录下(如果偷懒的话,可以直接拷贝到当前项目的bin\Debug目录下),在VS打开的项目引用上右键添加引用 ICSharpCode.SharpZipLib.dll
然后,在VS打开的项目上右键新建一个类,命名为 ZipHelper.cs,把类里面的所有code清空,复制以下代码,粘贴:
- using System;
- using System.Collections.Generic;
- using System.Linq;
- using System.Text;
- using System.IO;
- using System.Diagnostics;
- using ICSharpCode.SharpZipLib;
- using ICSharpCode.SharpZipLib.Zip;
- using ICSharpCode.SharpZipLib.Checksums;
- using ICSharpCode.SharpZipLib.Core;
-
- namespace ZipOneCode.ZipProvider
- {
- public class ZipHelper
- {
- /// <summary>
- /// 压缩文件
- /// </summary>
- /// <param name="sourceFilePath"></param>
- /// <param name="destinationZipFilePath"></param>
- public static void CreateZip(string sourceFilePath, string destinationZipFilePath)
- {
- if (sourceFilePath[sourceFilePath.Length - 1] != System.IO.Path.DirectorySeparatorChar)
- sourceFilePath += System.IO.Path.DirectorySeparatorChar;
-
- ZipOutputStream zipStream = new ZipOutputStream(File.Create(destinationZipFilePath));
- zipStream.SetLevel(6); // 压缩级别 0-9
- CreateZipFiles(sourceFilePath, zipStream, sourceFilePath);
-
- zipStream.Finish();
- zipStream.Close();
- }
-
- /// <summary>
- /// 递归压缩文件
- /// </summary>
- /// <param name="sourceFilePath">待压缩的文件或文件夹路径</param>
- /// <param name="zipStream">打包结果的zip文件路径(类似 D:\WorkSpace\a.zip),全路径包括文件名和.zip扩展名</param>
- /// <param name="staticFile"></param>
- private static void CreateZipFiles(string sourceFilePath, ZipOutputStream zipStream, string staticFile)
- {
- Crc32 crc = new Crc32();
- string[] filesArray = Directory.GetFileSystemEntries(sourceFilePath);
- foreach (string file in filesArray)
- {
- if (Directory.Exists(file)) //如果当前是文件夹,递归
- {
- CreateZipFiles(file, zipStream, staticFile);
- }
-
- else //如果是文件,开始压缩
- {
- FileStream fileStream = File.OpenRead(file);
-
- byte[] buffer = new byte[fileStream.Length];
- fileStream.Read(buffer, 0, buffer.Length);
- string tempFile = file.Substring(staticFile.LastIndexOf("\\") + 1);
- ZipEntry entry = new ZipEntry(tempFile);
-
- entry.DateTime = DateTime.Now;
- entry.Size = fileStream.Length;
- fileStream.Close();
- crc.Reset();
- crc.Update(buffer);
- entry.Crc = crc.Value;
- zipStream.PutNextEntry(entry);
-
- zipStream.Write(buffer, 0, buffer.Length);
- }
- }
- }
- }
- }
使用方法,在外部引用using ZipOneCode.ZipProvider 后,类似调用 ZipHelper.CreateZip(@"D:\Temp\forzip", @"D:\Temp2\forzip.zip") 即可。
注意在调用之前,考虑注意一些异常情况的判断,比如源文件路径是否存在等。
MVC把返回打包文件:
- if (!System.IO.File.Exists(path))
- {
- throw new HttpException(404, "Not found");
- }
- return File(path, "application/octet-stream", "xxx.zip");