struts2-rest-plugin incorrectly handles multipart/form-data content-type data
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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
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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