我正在将原始 HTTP 请求保存到文本文件中，我需要读取其中的多部分内容。我知道有许多第 3 方工具可以执行此操作，但如果可能的话，我需要使用 .NET 框架来执行此操作。我试过将 txt 文件读入流中，但我不知道如何提取多部分内容。这是我一直在使用的代码示例和我试图从中读取的示例文件:
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
/9j/4AAQSkZJRgABAgAAZABkAAD/7AARRHVja3kAAQAEAAAAKgAA/+4ADkFkb2JlAGTAAAAA
Af/bAIQACwgICAgICwgICxAKCQoQEw4LCw4TFhERExERFhUREhISEhEVFRkaGxoZFSEhJCQh
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AQEAAAAAAAAAAAAAAAUAAQIEBgcDAQEBAQEBAAAAAAAAAAAAAAABAAIDBBAAAQMCAwQDCgkK
BwAAAAAAAQACAxEEIRIFMVETBkFhgXGRsSJCYrKT0xSh0TJScpIjMxbB4YKiJBUlNVUX8NJT
g6MmNhEBAAECBAQEBwAAAAAAAAAAAAERAiExcRKBkTKTQVGy0vAiQpKiAxP/2gAMAwEAAhED
EQA/ANDzDzHJYzughLpbx7i2KBhNTjhWnQvDTZ9bawy6jeOkkfiIG0DWV6KgVJ7VK5srePV7
y+pmuJXUzHyWgBuVvdopV3Iea+67dOMxSfBfglvrh+SOV2HynEmgCLxxNYwB73vd0uLnDwFU
rTLBC1o2nFx6yvbjpbtmfOVrJF5313fGmyR73fXd8ar8brS4oU1uWMke9313fGn4cW9313fG
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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--
目前我收到此错误“无法将类型为‘System.Net.Http.StreamContent’的对象转换为类型‘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)
{
这给出了错误“MIME 多部分流的意外结束。 MIME 多部分消息不完整'
最佳答案
您正在将 StreamContent 作为 part 添加到空的 MultipartFormDataContent。自然地，ReadAsMultipartAsync 然后什么都不做。相反，您想阅读 StreamContent。此外，您的文件不仅包含内容，还包含标题。如果你剪掉标题，这应该可以工作:
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
}
}
关于c# - 从原始 http 请求中读取多部分内容，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/20968492/