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Java Multipart file upload

Posted on 2009-05-19
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Last Modified: 2012-06-27
I am attempting to write a code which will upload a file in parts using a POST request. With every part, I need to send following lines in the POST body,

FILENAME: xxx
LENGTH:  xxx
MD5:  xxx
SESSIONID: xxx
PARTS:x

===PART:x===
<part of the file here>
===END:md5 checksum===

After sending a part, I have to wait for a 202 response and then send the next part.

Any ideas on how to do this?
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Question by:neerhajnjoshi
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9 Comments
 
LVL 86

Expert Comment

by:CEHJ
ID: 24419780
Two ways basically:

a. get that info before you construct the request and add it as post params
b. subclass the request itself
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Accepted Solution

by:
CEHJ earned 672 total points
ID: 24419787
(Your can use Apache HttpClient's multipart)
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Assisted Solution

by:objects
objects earned 1328 total points
ID: 24419904
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Author Comment

by:neerhajnjoshi
ID: 24420014
@CEHJ,

how do I wait for a response before sending out next part ?
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LVL 92

Expert Comment

by:objects
ID: 24420031
what are you using to send the request?  Once yo have sent the request you need to read the request (which will include the 202 response code which you need to read, don't just assume it there)
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LVL 92

Expert Comment

by:objects
ID: 24420040
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Author Comment

by:neerhajnjoshi
ID: 24420585
I am aware how to send simple POST/GET requests.  It would be great if anyone could post a sample of multipart post request.
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LVL 92

Assisted Solution

by:objects
objects earned 1328 total points
ID: 24420617
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