使用 ICharpCode.SharpZipLib 压缩指定目录结构
今天做项目中遇见一个压缩问题，我的目录结构是树形菜单，文件在服务器存储是平面存储，没有目录结构，所以在下载指定目录的时候要构建目录结构，如下：
当我右键点击下载b目录文件夹的时候要Download b 目录下的所有文件，并且有目录结构，实现如下：
1 public static void CreateZip(List<string> directories, List<string> filenames, string zipFileName, string dir) 2 { 3 using (ZipOutputStream ZipStream = new ZipOutputStream(System.IO.File.Create(dir + zipFileName))) 4 { 5 ZipStream.SetLevel(9); 6 ZipEntryFactory factory = new ZipEntryFactory(); 7 foreach (var directory in directories) 8 { 9 string virtualDirectory = directory; 10 ZipEntry zipEntry = factory.MakeDirectoryEntry(virtualDirectory); 11 zipEntry.DateTime = DateTime.Now; 12 ZipStream.PutNextEntry(zipEntry); 13 } 14 15 byte[] buffer = new byte[4096]; 16 for (int i = 0; i < filenames.Count; i++) 17 { 18 string file = filenames[i]; 19 string newfileName = file.Replace(dir, string.Empty); 20 ZipEntry entry = factory.MakeFileEntry(directories[i] + "//" + newfileName); 21 22 entry.DateTime = DateTime.Now; 23 ZipStream.PutNextEntry(entry); 24 25 using (FileStream fs = System.IO.File.OpenRead(file)) 26 { 27 int sourceBytes; 28 do 29 { 30 sourceBytes = fs.Read(buffer, 0, buffer.Length); 31 ZipStream.Write(buffer, 0, sourceBytes); 32 } while (sourceBytes > 0); 33 } 34 } 35 ZipStream.Finish(); 36 ZipStream.Close(); 37 } 38 39 System.Web.HttpContext.Current.Response.ContentType = "application/x-compress zip"; 40 System.Web.HttpContext.Current.Response.AddHeader("Content-Disposition", "attachment;filename=" + zipFileName); 41 System.Web.HttpContext.Current.Response.TransmitFile(dir + zipFileName); 42 }
以下载b目录为例，参数如下：
directories：
filenames：
zipFileName:
dir:
调用上面方法传入正确参数即可生成正确的目录
