Ken,
Yes, the interface to your action is a File. The default implementation
uses the ServletFileUpload servlet from apache-commons-fileupload which
does create a temporary file.
You can switch to other implementations or configurations by changing
some struts2 properties but the fileupload interceptor interface is
still a File, not an InputStream.
Personally I'd prefer the temporary file over an in-memory buffer, and
prefer a temporary file in a safe part of the filesystem rather than
allowing the file to be written elsewhere by the servlet.
However, it seems you have a lot of control over the implementation if
this is a problem:
http://jakarta.apache.org/commons/fileupload/using.html
Hoying, Ken wrote:
As I am reading up and looking into the file upload support in S2, it
appears that files are uploaded to a temporary area and then deleted
when control is returned from the action. It would seem then that if I
wanted to keep the file, that I then need to copy it again to somewhere
else. Is this understanding correct? This seems a bit inefficient to
me, especially for larger files.
Thanks in advance.
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