下载并解压缩XML文件 [英] Download and Unzip XML file

问题描述

我想解压缩并解析位于此处的xml文件>

I would like to unzip and parse an xml file located here

这是我的代码：

HttpClientHandler handler = new HttpClientHandler()
{
    CookieContainer = new CookieContainer(),
    UseCookies = true,
    AutomaticDecompression = DecompressionMethods.GZip | DecompressionMethods.Deflate,
   // | DecompressionMethods.None,

};

using (var http = new HttpClient(handler))
{

    var response =
         http.GetAsync(@"https://login.tradedoubler.com/report/published/aAffiliateEventBreakdownReportWithPLC_806880712_4446152766894956100.xml.zip").Result;

    Stream streamContent = response.Content.ReadAsStreamAsync().Result;

    using (var gZipStream = new GZipStream(streamContent, CompressionMode.Decompress))
    {
        var settings = new XmlReaderSettings()
        {
             DtdProcessing = DtdProcessing.Ignore
         };

         var reader = XmlReader.Create(gZipStream, settings);
         reader.MoveToContent();

         XElement root = XElement.ReadFrom(reader) as XElement;
     }
}

我在XmlReader.Create（gZipStream，设置）

I get an exception on XmlReader.Create(gZipStream, settings)

GZip标头中的幻数不正确。确保您正在传递GZip流

要再次检查我是否正在从网络中获取格式正确的数据，请抓取该流并将其保存到一个文件：

To double check that I am getting properly formatted data from the web, I grab the stream and save it to a file:

byte[] byteContent = response.Content.ReadAsByteArrayAsync().Result;
File.WriteAllBytes(@"C:\\temp\1111.zip", byteContent);

我检查1111.zip后，它看起来像是格式正确的zip文件，其中包含我需要的xml 。

After I examine 1111.zip, it appears as a well formatted zip file with the xml that I need.

我被告知此处根本不需要GZipStream，但是如果我从代码中完全删除压缩流，并将streamContent直接传递给xml阅读器，则会出现异常：

I was advised here that I do not need GZipStream at all but if I remove compression stream from the code completely, and pass streamContent directly to xml reader, I get an exception:

根级别无效。行1，位置1。

无论压缩还是不压缩，我仍然无法解析该文件。我在做什么错？

Either compressed or not compressed, I still fail to parse this file. What am I doing wrong?

推荐答案

相关文件的编码方式为 PKZip 格式，而不是 GZip 格式。

The file in question is encoded in PKZip format, not GZip format.

您需要使用其他库来解压缩它，例如 System.IO.Compression.ZipFile 。

You'll need a different library to decompress it, such as System.IO.Compression.ZipFile.

通常可以通过文件扩展名区分编码。 PKZip文件经常使用 .zip ，而GZip文件经常使用 .gz 。

You can typically tell the encoding by the file extension. PKZip files often use .zip while GZip files often use .gz.

请参阅：以编程方式在.net中解压缩文件

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