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https://issues.apache.org/struts/browse/WW-3128?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=46306#action_46306
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Jordi Albert commented on WW-3128:
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struts-rest is unusable as MultipartFormDataHandler is missing. Can you check
it please?
> struts2-rest-plugin incorrectly handles multipart/form-data content-type data
> -----------------------------------------------------------------------------
>
> Key: WW-3128
> URL: https://issues.apache.org/struts/browse/WW-3128
> 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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