错误，当创建一个使用DotNetZip Zip文件：压缩文件意外结束 [英] Error when creating Zip file using DotNetZip: Unexpected end of archive

问题描述

我有拉链向上使用DotNetZip一个或多个文件的方法，并且已经正常工作。我今天收到错误的第一时间，它似乎与存档的总大小。使用相同的60MB .TIFF图像，我会添加一些额外的副本，测试，重复。它工作得很好，直到加入约10张图像，然后，当我打开用winrar Zip文件，我会得到错误档案意外结束。以这种方式测试，我相信我已经排除了被涉及到我的code或文件（被损坏或东西）的问题。在code没有错误，只有WinRAR的。当我打开Zip文件，有一个大小为0的只显示一个文件所以好像被达到某种大小限制，它不是允许创建存档。我只是不知道这限制了它。这里是我的code，如果它可以帮助：

  HttpContext.Current.Response.Clear（）;
HttpContext.Current.Response.ContentType =应用程序/压缩
HttpContext.Current.Response.AddHeader（内容处置，文件名=+MyFileName的+ DateTime.Now.ToString（MMDDYYYY）+.ZIP）;使用（VAR邮编=新Ionic.Zip.ZipFile（））
{
    zip.MaxOutputSegmentSize = 819200; //我尝试添加这并没有解决问题    的foreach（在文件var文件）
    {
        zip.AddFile（file.FileLocation，file.ZipFileDirectory）.FileName =
            （！string.IsNullOrEmpty（file.ZipFileDirectory）及及（file.ZipFileDirectory = @\\）！）？
                的String.Format（@{0} \\ {1}，file.ZipFileDirectory，file.FileName）：
                file.FileName;
    }    zip.Save（HttpContext.Current.Response.OutputStream）;
}
 

解决方案

你需要你写完它后刷新流？

HttpContext.Current.Response.Flush（）;

编辑：

呼叫HttpContext.Current.ApplicationInstance.CompleteRequest（）

I have a method that zips up one or more files using DotNetZip, and it has been working correctly. I received an error for the first time today and it appears to be related to the total size of the archive. Using the same 60mb .tiff image, I would add a few extra copies, test, repeat. It worked fine until about 10 images were added, then, when I opened the Zip file using WinRar, I would get the "Unexpected end of archive" error. Testing in this manner, I believe I've ruled out the problem being related to my code or the files (being corrupt or something). The code does not error, only WinRar. When I open the Zip file, there is only one file displayed with a size of "0." So it seems like some sort of size limit is being reached and it's not allowing the archive to be created. I just don't know which limit it is. Here is my code, if it helps:

HttpContext.Current.Response.Clear();
HttpContext.Current.Response.ContentType = "application/zip";
HttpContext.Current.Response.AddHeader("content-disposition", "filename=" + "MyFileName" + DateTime.Now.ToString("MMddyyyy") + ".zip");

using (var zip = new Ionic.Zip.ZipFile())
{
    zip.MaxOutputSegmentSize = 819200; // I tried adding this and it did not fix the problem

    foreach (var file in files)
    {
        zip.AddFile(file.FileLocation, file.ZipFileDirectory).FileName = 
            (!string.IsNullOrEmpty(file.ZipFileDirectory) && (file.ZipFileDirectory != @"\")) ? 
                string.Format(@"{0}\{1}", file.ZipFileDirectory, file.FileName) : 
                file.FileName;
    }

    zip.Save(HttpContext.Current.Response.OutputStream);
}

解决方案

Do you need to Flush the stream after your are done writing to it?

HttpContext.Current.Response.Flush();

EDIT:

Call HttpContext.Current.ApplicationInstance.CompleteRequest()

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