将MIME编码的附件发布到Ariba Supplier Network时出现问题 [英] Problem Posting MIME encoded attachment to Ariba Supplier Network

问题描述

我在尝试使用VB.NET和WebRequest对象发布一些cXML文本和附件时遇到问题.我相信我正在格式化我要正确发布的数据文本，因为它与Ariba提供的样本匹配.我不确定的是，是否可以正确使用WebRequest对象进行发布.我将方法设置为"POST"，将ContentType设置为"multipart/mixed".我可以成功发布cXML(使用ContentType为"text/xml"的内容)，因此我知道在常规作品中发布.我从Ariba收到的消息是无法解析文档:缺少起始边界[ANCLS-741552]"，但是，如以下代码所示，存在起始边界.我已经删除了一些专有数据，并将其替换为"...".在MIME文本之后，我包括了我正在使用的相关VB.NET代码.

I'm having an issue with trying to use VB.NET and the WebRequest object to post some cXML text and an attachment. I believe I am formatting the text of the data I wish to post correctly, as it matches samples Ariba has supplied. What I am uncertain of is if I am correctly using the WebRequest object to do the posting. I am setting the Method as "POST" and the ContentType as "multipart/mixed". I can successfully post cXML (using a ContentType of "text/xml"), so I know posting in general works. The message I get back from Ariba is "The document could not be parsed: Missing start boundary [ANCLS-741552]", however, as the following code shows, there is a start boundary. I have removed some proprietary data and replaced it with "...". Following the MIME text, I have included the relevant VB.NET code I am using.

任何人和所有建议都将受到欢迎和赞赏！

Any and all suggestions are most welcome and appreciated!

------=_boundary.20100210154837663.173702
Content-Type: text/xml; charset=UTF-8
Content-ID: Part1.5213.20100210154837663.319349

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE cXML SYSTEM "http://xml.cxml.org/schemas/cXML/1.2.018/cXML.dtd">
<cXML.../cXML>

------=_boundary.20100210154837663.173702
Content-Type: application/octet-stream
Content-transfer-encoding: base64
Content-ID: 5213.20100210154837663.319349
Content-Disposition: attachment; filename=attachment_20100210154837663_125705.jpg
Content-Length: 5660

/9j/4AAQSkZJRgABAQAAAQABAAD/2wBDAAkGBwgHBgkIBwgKCgkLDRYPDQwMDRsUFRAWIB0iIiAd
.
.
.
dC2Nz9dOaQ1ZVIilwIpaWvLEg7aWuauv/9k=
------=_boundary.20100210154837663.173702--


Dim myWriter As StreamWriter = Nothing

Dim strUri As String = "https://service.ariba.com/service/transaction/cxml.asp"

Dim WebReq As WebRequest = System.Net.WebRequest.Create(strUri)

WebReq.Method = "POST"
WebReq.ContentType = "multipart/mixed"

myWriter = New StreamWriter(WebReq.GetRequestStream())
myWriter.Write(xmlText)
myWriter.Close()

Dim WebRsp As HttpWebResponse
WebRsp = CType(WebReq.GetResponse(), HttpWebResponse)

推荐答案

比尔-我从Ariba获得了一些信息，并认为这可能对您有用:

Bill - I got some info from Ariba and thought it might be useful to you:

• 整个有效内容的Content-type声明指定了边界
• 每个部分前面都有一个'-'，后面是边界
• 文档以'-'结尾，后跟边界，后跟'-'
• 每个部分的Content-ID用尖括号括起来
• 在不带尖括号的注释/附件"中的URL元素中引用了附件的Content-ID

也许您可以尝试使用较短的边界字符串.另外，请注意开始"参数.这是为我工作的人:

Maybe you could try with a shorted boundary string. Also, note the 'start' parameter. Here's the one that worked for me:

request.ContentType =  "multipart/related;boundary=outerboundary1;type=""text/xml"";start=""<x.xml>"""

具有上述边界&开始设置如下:

A sample XML with the above boundary & start settings looks like this:

--outerboundary1

Content-Type: text/xml

Content-ID: <x.xml>

<?xml version="1.0"?>

<!DOCTYPE cXML SYSTEM "http://xml.cxml.org/schemas/cXML/1.2.007/InvoiceDetail.dtd">

<cXML payloadID="za1saasxsx" timestamp="2003-04-04" xml:lang="en"><Header><From> 

... 

<Comments>These also use bluetooth<Attachment><URL>cid:[e-mail]</URL></Attachment></Comments>

...

</Request></cXML>

--outerboundary1

Content-type: text/plain; charset=US-ASCII

Content-Disposition: attachment; filename=PremiereCatalog.xxx

Content-Length: 4

Content-ID: <[e-mail]>

xxxx

--outerboundary1-- 

我知道，如果没有什么帮助，这可能会非常令人沮丧.因此，我知道您是否需要对我有用的完整代码.

I know it can be very frustrating with very little help out there. So lemme know if you need the complete code that worked for me.

普拉文

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