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From "Wes Wannemacher (JIRA)" <>
Subject [jira] Commented: (WW-3128) struts2-rest-plugin incorrectly handles multipart/form-data content-type data
Date Fri, 10 Jul 2009 12:59:00 GMT


Wes Wannemacher commented on WW-3128:

I had every intention of having this in 2.1.7, but you can see it took two commits for me
to get it right. There was nothing wrong with the patch, I simply applied it, built, then
checked the rest-showcase with mvn jetty:run. When everything looked okay to me, I did an
'svn commit' and I hadn't 'svn add' ed one of the files. So, the commit went upstream with
no errors or problems, and my local copy of the source was intact. I didn't notice anything
was wrong until I deployed on another test system. Since I screwed up the commit, we voted
2.1.7 down and are working to get 2.1.8 out pretty quickly. The second commit came after I
ran the release process for 2.1.7, so this won't be fully fixed until we get 2.1.8 out. 

> struts2-rest-plugin incorrectly handles multipart/form-data content-type data
> -----------------------------------------------------------------------------
>                 Key: WW-3128
>                 URL:
>             Project: Struts 2
>          Issue Type: Bug
>          Components: Plugin - REST
>    Affects Versions: 2.1.6
>            Reporter: Brian Ferris
>            Assignee: Wes Wannemacher
>             Fix For: 2.1.7
>         Attachments: struts2-rest-plugin-MultiPartFormDataHandler.patch
> When a POST request is made with "multipart/form-data" encoding, such as to upload a
file, the "DefaultContentTypeHandlerManager" has no custom input handler registered to handle
"multipart/form-data" data.  The plugin assumes a default input handler based on the request
extension.  In case of "xml" (which is also the default handler failing all else), the handler
attempts to parse the payload as xml, which results in an exception being thrown.
> The solution is to write a custom content-type handler similar to the "FormUrlEncodedHandler"
that ignores the form payload.  In addition, the "DefaultContentTypeHandlerManager" needs
to be modified, since the content-type of the form data is not actually "multipart/form-data",
but rather ""multipart/form-data; boundary=abcdefg".  Simple parsing is done to remove the
additional parameters of the content-type so that the proper handler can be correctly resolved.

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