在asp.net中实现在线文件的压缩和解压缩

参考了网上高手们了代码，以下测试通过，感觉不错 ，拿出来分享下！

1..首先引入ICSharpCode.SharpZipLib.dll文件 到官方下载

2,,编写类：解压缩类

注意其引入的命名空间

using System;

using System.Collections.Generic;

using System.Text;

using System.IO;

using ICSharpCode.SharpZipLib;

using ICSharpCode.SharpZipLib.Zip;

using ICSharpCode.SharpZipLib.Checksums;

/**/ /* * 解压缩 */

namespace ZipApplication

{ /**/ /// /// 压缩类 ///

public class ZipClass

{ /**/ /// /// 递归压缩文件夹方法 /// ///
///
///
private static 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 { res = false; } 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; } /**/ /// /// 压缩目录 /// ///
待压缩的文件夹，全路径格式 ///
压缩后的文件名，全路径格式 /// private static bool ZipFileDictory(string FolderToZip, string ZipedFile) { bool res; if (!Directory.Exists(FolderToZip)) { return false; } ZipOutputStream s = new ZipOutputStream(File.Create(ZipedFile)); s.SetLevel(6); res = ZipFileDictory(FolderToZip, s, ""); s.Finish(); s.Close(); return res; } /**/ /// /// 压缩文件 /// ///
要进行压缩的文件名 ///
压缩后生成的压缩文件名 /// private static bool ZipFile(string FileToZip, string ZipedFile) { //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(6); ZipStream.Write(buffer, 0, buffer.Length); } catch { res = false; } 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; } /**/ /// /// 压缩文件 和 文件夹 /// ///
待压缩的文件或文件夹，全路径格式 ///
压缩后生成的压缩文件名，全路径格式 /// public static bool Zip(String FileToZip, String ZipedFile) { if (Directory.Exists(FileToZip)) { return ZipFileDictory(FileToZip, ZipedFile); } else if (File.Exists(FileToZip)) { return ZipFile(FileToZip, ZipedFile); } else { return false; } } } /**/ /// /// 解压类 /// public class UnZipClass { /// /// 解压缩文件 /// ///
压缩包文件名 ///
解压缩目标路径 public static void Decompress(string GzipFile, string targetPath) { //string directoryName = Path.GetDirectoryName(targetPath + "//") + "//"; string directoryName = targetPath; if (!Directory.Exists(directoryName)) Directory.CreateDirectory(directoryName);//生成解压目录 string CurrentDirectory = directoryName; byte[] data = new byte[2048]; int size = 2048; ZipEntry theEntry = null; using (ZipInputStream s = new ZipInputStream(File.OpenRead(GzipFile))) { while ((theEntry = s.GetNextEntry()) != null) { if (theEntry.IsDirectory) {// 该结点是目录 if (!Directory.Exists(CurrentDirectory + theEntry.Name)) Directory.CreateDirectory(CurrentDirectory + theEntry.Name); } else { if (theEntry.Name != String.Empty) { //解压文件到指定的目录 using (FileStream streamWriter = File.Create(CurrentDirectory + theEntry.Name)) { while (true) { size = s.Read(data, 0, data.Length); if (size <= 0) break; streamWriter.Write(data, 0, size); } streamWriter.Close(); } } } } s.Close(); } } } }

3.. 在页面进行调用此类中的方法 希望对大家有所帮助！