I'm attempting to use Panda with my GWT application. I can upload videos directly to my panda server using
POST MY_PANDA_SERVER/videos/MY_VIDEO_ID/upload
However I would like hide my panda server behind my J2EE (glassfish) server. I would like to achieve this:
- Start upload to some servlet on my J2EE server
- Authenticate user
- POST the file to my panda server while still uploading to servlet
Ideally I would like to never store the file on the J2EE server, but just use it as a proxy to get to the panda server.
Commons FileUpload is nice, but not sufficient in your case. It will parse the entire body in memory before providing the file items (and streams). You're not interested in the individual items. You basically just want to stream the request body from the one to other side transparently without altering it or storing it in memory in any way. FileUpload would only parse the request body into some "useable" Java objects and HttpClient would only create the very same request body again based on those Java objects. Those Java objects consumes memory as well.
You don't need a library for this (or it must be Commons IO to replace the
for
loop with an oneliner usingIOUtils#copy()
). Just the basic Java NET and IO API's suffices. Here's a kickoff example: