从zip解压缩拉链时出错

Question

我有以下文件结构：

yyyy.zip
12x MM-yyyy.zip

each of MM-yyyy.zip
            28-31x yyyyMMdd.prn

在这种情况下，

prn就像txt。

我有一个月的路径，并提取MM-yyyy.zip很好。 不幸的是，yyyy.zip的解包函数不想迭代MM-yyyy.zip并解压缩它们。 （错误如下）

为MM-yyyy.zip工作

private static Dictionary<string, MemoryStream> UnZipToMemory(string url)
{
    var result = new Dictionary<string, MemoryStream>();
    using (var client = new WebClient())
    using (ZipFile zip = ZipFile.Read(new MemoryStream(client.DownloadData(url))))
    {
        foreach (ZipEntry e in zip)
        {
            MemoryStream data = new MemoryStream();
            e.Extract(data);
            result.Add(e.FileName, data);
        }
    }
    return result;
}

此功能不适用于yyyy.zip

private static Dictionary<string, MemoryStream> UnZipToMemoryYear(string url)
{
    var result = new Dictionary<string, MemoryStream>();
    using (var client = new WebClient())
    using (ZipFile zip = ZipFile.Read(new MemoryStream(client.DownloadData(url))))
    {
        foreach (ZipEntry e in zip)
        {
            MemoryStream data = new MemoryStream();
            e.Extract(data);
            using (ZipFile zi = ZipFile.Read(data))     //error is from this line
            {
                foreach (ZipEntry f in zi)
                {
                    MemoryStream data2 = new MemoryStream();
                    f.Extract(data2);
                    result.Add(f.FileName, data2);
                }
            }
        }
    }
    return result;
}

抛出错误（）：

An unhandled exception of type 'Ionic.Zip.BadReadException' occurred in Ionic.Zip.dll

Additional information: Could not read block - no data! (position 0x00000000)

您的测试的一些数据（目录中不存在07-2013.zip） 如果您想要所有可能的文件，请查看此（http://bossa.pl/index.jsp?layout=mstock&page=1&news_cat_id=706&dirpath=/metastock/mstock/sesjaall）

    //string url = "http://bossa.pl/pub/metastock/mstock/sesjaall/07-2014.zip";
    string url = "http://bossa.pl/pub/metastock/mstock/sesjaall/2013.zip";
    //DownloadZipTest(url);
    DownloadZipTestYear(url);

和功能

private void DownloadZipTest(string url)
{

    foreach (KeyValuePair<string, MemoryStream> x in UnZipToMemory(url))
    {
        Console.WriteLine("");
        Console.WriteLine(x.Key);
        Console.WriteLine(Encoding.UTF8.GetString(x.Value.ToArray()));
    }
}

private void DownloadZipTestYear(string urlYear)
{
    foreach (KeyValuePair<string, MemoryStream> x in UnZipToMemoryYear(urlYear))
    {
        Console.WriteLine("");
        Console.WriteLine(x.Key);
        Console.WriteLine(Encoding.UTF8.GetString(x.Value.ToArray()));
    }
}

修改

在dotNetZip 1.9.3和1.9上，错误是错误的。