在Spring 5.0.1中无法处理多部分/报表数据。 它仅在请求中检测到多部分/表单数据

Question

I am using Spring 5.0.1 and servlet 3.1.0

When user sends multipart/form-data in the request, spring is able to parse the request and make the parts out of it.
request.getParts() will have those provided multiparts.

But when user sends multipart/report (content-type), spring does not parse this request properly.
It does not give any exception but it does not store anything in the request parts.
request.getParts() will return empty array.

Is there any configuration that has to be done so that spring parses any kind of multipart data.

Posting my code and request payload below:

REST API does not have any restriction on the content type. It takes only request and response as parameters as shown below:

@RequestMapping (value = "/rest/external/integration/{serviceName}", method = RequestMethod.POST)   
public void executeAssemblyExternal (HttpServletRequest request, 
            HttpServletResponse response, @PathVariable String serviceName)  throws Exception    
{        
      Parts[] requestParts = request.getParts();   
}

Content-type header which is being sent with the request is :
Content-Type multipart/report; Report-Type=disposition-notification; boundary="----=_Part_82_645653877.1526452736757"

Multipart data which is being sent to the REST API is as below:

------=_Part_82_645653877.1526452736757 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit

MDN for - Message ID: <1088014046.24.1526452734879@MCBKUM03.eur.ad.sag> From: SenderAS2 To: ReceiverAS2 Received on: 2018-05-16 at 12:08:56 (IST) Status: processed Comment: This is not a guarantee that the message has been completely processed or understood by the receiving translator

------=_Part_82_645653877.1526452736757 Content-Type: message/disposition-notification Content-Transfer-Encoding: 7bit

Reporting-UA: webMethods Integration Server Original-Recipient: rfc822; ReceiverAS2 Final-Recipient: rfc822; ReceiverAS2 Original-Message-ID: <1088014046.24.1526452734879@MCBKUM03.eur.ad.sag> Received-content-MIC: SezQZhP0aSchqB1zCO0Dq4J0u3U=, sha1 Disposition: automatic-action/MDN-sent-automatically; processed

------=_Part_82_645653877.1526452736757--

Answer 1

As Deinum mentioned in a comment, servlet can not handle multipart requests other than multipart/form-data. So Written a custom dispatcherServlet where requests having header Content-Type as multipart with subtype other than form-data will be bypassed from getting processed through MultipartResolver.

By doing this request.getInputStream() will have whole multipart data as sent by the user. Necessary actions can be performed on this inputstream at the server side.