C#OutOfMemoryException使用SharpZipLib创建ZipOutputStream [英] C# OutOfMemoryException creating ZipOutputStream using SharpZipLib

问题描述

在下面的代码中，我总是收到一个非常烦人的OutOfMemory异常.

I keep getting a very annoying OutOfMemory exception on the following code.

我正在压缩很多小文件(PDF，每个文件大约1.5mb).

I'm zipping a lot of small files (PDF, each being 1.5mb approx).

起初，压缩25个文件后，我得到了例外，这似乎不是一个庞大的归档文件.

At first I was getting the exception afer 25 files zipped, which doesn't seem like a massing archive.

设置ZipEntry的大小有所帮助，因为现在我设法压缩多达110个文件(我正在Visual Studio中进行调试)

Setting up the size of the ZipEntry somehow helped since now I manage to get up to 110 files zipped (I'm debugging under visual studio)

这是我的代码，也许有问题.

Here's my code, maybe there's something wrong with it.

任何帮助将不胜感激.

谢谢

    public static MemoryStream Zip(Dictionary<string, byte[]> files)
    {
        var outputMemStream = new MemoryStream();

        var zipStream = new ZipOutputStream(outputMemStream);

        zipStream.SetLevel(9);
        foreach (var file in files)
        {
            zipStream.PutNextEntry(new ZipEntry(file.Key.FmtValidFileName())
                {
                    Size = file.Value.Length
                });
            zipStream.Write(file.Value, 0, file.Value.Length);
            zipStream.Flush();
        }           
        zipStream.Finish();
        outputMemStream.Position = 0;
        return outputMemStream;
    }

推荐答案

即使在内存为16gb的64位系统上，我本来也很安全，但我还是放弃了使用MemoryStream的尝试.

I gave up trying to use MemoryStream even though being on a 64bit system with 16gb of memory I should have been safe on that side.

我发现的相关主题是: OutOfMemoryException，同时填充了MemoryStream :在16GB系统上分配256MB

The relevant topic I found was: OutOfMemoryException while populating MemoryStream: 256MB allocation on 16GB system

并使用一个临时文件而不是内存来写入/读取数据.

And using a temporary file to write/read the data instead of memory.

这篇关于C#OutOfMemoryException使用SharpZipLib创建ZipOutputStream的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！