1    　　　　  var uploadSectionDir = Path.Combine("Upload", "QQ", DateTime.Now.ToString("yyyyMMdd"));
 2             string uploadDir = Path.Combine(HttpRuntime.AppDomainAppPath, uploadSectionDir);
 3             if (!Directory.Exists(uploadDir))
 4             {
 5                 Directory.CreateDirectory(uploadDir);
 6             }
 7             string fileName ="test.zip";
 8             string filePath = Path.Combine(uploadDir, fileName);
 9
10             //生成的压缩文件为test.zip
11             using (FileStream fsOut = System.IO.File.Create(filePath))
12             {
13                 //ZipOutputStream类的构造函数需要一个流，文件流、内存流都可以，压缩后的内容会写入到这个流中。
14                 using (ZipOutputStream zipStream = new ZipOutputStream(fsOut))
15                 {
16                     MemoryStream ws = new AirBillBLL().ExportToExcel(ladingNoList);
17                     string entryName = string.Concat(string.Format("{0:yyyyMMddHHmmssffff}", DateTime.Now), ".xls");
18                     ZipEntry newEntry = new ZipEntry(entryName);
19                     newEntry.DateTime = DateTime.Now;
20                     newEntry.Size = ws.Length;
21
22                     //把压缩项的信息添加到ZipOutputStream中。
23                     zipStream.PutNextEntry(newEntry);
24                     byte[] buffer = new byte[4096];
25                     //把需要压缩文件以文件流的方式复制到ZipOutputStream中。
26
27                     StreamUtils.Copy(ws, zipStream, buffer);
28
29                     zipStream.CloseEntry();
30                     zipStream.IsStreamOwner = false;
31                     zipStream.Finish();
32                     zipStream.Close();
33                 }
34             }35             return File(filePath, "application/x-zip-compressed", string.Concat(string.Format("{0:yyyyMMddHHmmssffff}", DateTime.Now), ".zip"));