阅读从原材料的HTTP请求多部分内容

阅读从原材料的HTTP请求多部分内容

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阅读从原材料的HTTP请求多部分内容

本文介绍了阅读从原材料的HTTP请求多部分内容的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我节省了原材料的HTTP请求到一个文本文件，我需要阅读其中的内容多部分。我知道有一些第三方工具来做到这一点，但我需要与可能的话在.NET框架来做到这一点。我曾尝试阅读txt文件到流，但我不知道如何提取的多部分的内容。这是我一直在使用的代码，我试图从读取样本文件的例子：

I am saving a raw HTTP request to a text file and I need to read the multipart content within it. I know there are a number of 3rd party tools to do this but I need to do this with the .NET framework if possible. I have tried reading the txt file into a stream but I don't know how to extract the multipart content. Here is an example of the code I have been using and a sample file I am trying to read from :

    var content = new MultipartFormDataContent();

            var stream = new StreamContent(File.Open(@"C:\temp\test.txt", FileMode.Open));
            content.Add(stream);

            List<StreamContent> lstStreamContents = new List<StreamContent>();

            if (content != null)
            {
                if (content.IsMimeMultipartContent())
                    await content.ReadAsMultipartAsync(StreamProvider);

                foreach (MultipartContent multiPartContent in content)
                {
                    foreach (var streamContent in multiPartContent).....

文本文件：

Cache-Control: no-cache
Connection: Close
Content-Length: 5216
Content-Type: multipart/related;
     boundary="cbsms-main-boundary";
     start="<soap-envelope>", text/xml;
     charset=utf-8
Accept: */*
Host: hostname
User-Agent: Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
soapaction: ""

This is a multi-part message in MIME format.

--cbsms-main-boundary
Content-Type: text/xml;
     charset="utf-8"
Content-ID: <soap-envelope>

<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope
xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/">
<SOAP-ENV:Header>
<mm7:TransactionID
xmlns:mm7="http://www.3gpp.org/ftp/Specs/archive/23_series/23.140/schema/REL
-6-MM7-1-2">5947CCE35D5B4AEFB99DADDDF9472E67</mm7:TransactionID>
</SOAP-ENV:Header>
<SOAP-ENV:Body>
<mm7:DeliverReq
xmlns:mm7="http://www.3gpp.org/ftp/Specs/archive/23_series/23.140/schema/REL
-6-MM7-1-2">
<mm7:MM7Version>6.5.0</mm7:MM7Version>
<mm7:MMSRelayServerID>hostname</mm7:MMSRelayServerID>
<mm7:LinkedID>1-1754394156</mm7:LinkedID>
<mm7:SenderAddress>
<mm7:Number>46707630767</mm7:Number>
</mm7:SenderAddress>
<mm7:Recipients>
<mm7:To>
<mm7:Number>72401</mm7:Number>
</mm7:To>
</mm7:Recipients>
<mm7:TimeStamp>2008-05-08 11:16:39</mm7:TimeStamp> <mm7:Priority>Normal</mm7:Priority>
<mm7:Subject>Tube test</mm7:Subject>
</mm7:DeliverReq>
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>

--cbsms-main-boundary
Content-Type: multipart/mixed;
     boundary="cbsms-sub-boundary"
Content-ID: <MM7-Media>

--cbsms-sub-boundary
content-type: application/smil;
    Name=main.smil;Charset=utf-8
content-transfer-encoding: 7bit
content-id: <AAAA>
content-length: 483

<smil><head><layout><root-layout backgroundColor="#FFFFFF"
background-color="#FFFFFF" height="480px" width="640px"/> <region id="Image" top="0" left="0" height="50%" width="100%" fit="meet"/> <region id="Text" top="50%" left="0" height="50%" width="100%"
fit="scroll"/>
</layout>
</head>
<body><par dur="4000ms"><img src="smslogo.jpg" region="Image"></img> <text src="smil.txt" region="Text"><param name="foreground-color"
value="#000000"/>
</text>
</par>
</body>
</smil>

--cbsms-sub-boundary
content-type: image/jpeg;
    Name=smslogo.jpg
content-transfer-encoding: Base64
content-location: smslogo.jpg
content-length: 2218
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OlxA768C2WR2aQlx3nFWWNytoqjF11ZdHsYhG0MbsjaGjsS1K9j06zkuJDRzQRG07XOOwBYV
mt6xDGIYrl7YxgKUrTu7VXfJd3j89xI6V295JQ1uwba3lk/t5dz1+04rX5vO95YUlG3dH/bi
78cZM7W5uivvDG07+CSm6+g/NMHLz9QmJuuFdVHGGWQ40G5pGxARZ6B5WoU/25P8iSSoN2c9
HFMWXLPlaifVy+zTiy5T8rUj6qX2aSSebPbSFjyf06mfVTezT+5cm/1N3qpvZpJK5jtF7lyd
/U3eqm9mn9y5O/qZ9VN7NJJXM9s3uPKNcNTPqpfZpjZcr9GpH1Uvs0klc120DZ8u+TqP/HJ7
NO200QVz35MVPHpHJWnVRle8kkg9tq44+UfwJMxk38Bw4klJq5uM2mFOJ97/AIokkkp0+3p+
OD//2Q==

--cbsms-sub-boundary
content-type: text/plain;
    Name=smil.txt;Charset=utf-8
content-transfer-encoding: 7bit
content-location: smil.txt
content-length: 9

Tube test
--cbsms-sub-boundary--

--cbsms-main-boundary--

目前，我得到这个错误无法投类型的对象System.Net.Http.StreamContent为键入'System.Net.Http.MultipartContent 。

At the moment I am getting this error 'Unable to cast object of type 'System.Net.Http.StreamContent' to type 'System.Net.Http.MultipartContent'.'

编辑：

foreach (var part in multipart.Contents)
            {
                if (part.Headers.ContentType.MediaType == "multipart/mixed")
                {
                    if (part.IsMimeMultipartContent())
                        await part.ReadAsMultipartAsync(StreamProvider);

                    foreach (MultipartContent multiPartContent in StreamProvider.Contents)
                    {

这给了错误'MIME多流意外结束。 MIME多信息是不完整的

This gives the error ''Unexpected end of MIME multipart stream. MIME multipart message is not complete'

推荐答案

您要添加 StreamContent 作为一个的部分的为空 MultipartFormDataContent 。当然， ReadAsMultipartAsync 然后什么都不做。相反，你要的阅读的的 StreamContent 。另外，文件包含不只是内容，但标头也是如此。如果你剪掉了头，这应该工作：

You are adding a StreamContent as a part to the empty MultipartFormDataContent. Naturally, ReadAsMultipartAsync then does nothing. Instead, you want to read the StreamContent. Also, your file contains not just the content, but the headers as well. If you snip off the headers, this ought to work:

using (var stream = File.Open (@"C:\temp\test.txt", FileMode.Open))
{
    // note: StreamContent has no Content-Type set by default
    // set a suitable Content-Type for ReadAsMultipartAsync()
    var content = new StreamContent (stream) ;
    content.Headers.ContentType =
        System.Net.Http.Headers.MediaTypeHeaderValue.Parse (
            "multipart/related; boundary=cbsms-main-boundary") ;

    // TODO: make this recursive if required...
    var outerMultipart = await stream.ReadAsMultipartAsync () ;

    foreach (var outerPart in outerMultipart.Contents)
    {
        if (outerPart.IsMimeMultipartContent())
        {
            var innerMultipart = await outerPart.ReadAsMultipartAsync () ;

            foreach (var innerPart in innerMultipart.Contents) // do stuff
        }
        else // do other stuff
    }
}

这篇关于阅读从原材料的HTTP请求多部分内容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！

08-05 05:18
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