Even though the thread is very old, there may still be someone around looking for a more easy way to solve this problem (like me :))
After some research I found a way to uplaod a file without changing the original poster’s Java-Code.
You just have to use the following PHP-code:
<?php
$filename="abc.xyz";
$fileData=file_get_contents('php://input');
$fhandle=fopen($filename, 'wb');
fwrite($fhandle, $fileData);
fclose($fhandle);
echo("Done uploading");
?>
This code is just fetching the raw data sent by the java-application and writing it into a file.
There is, however one problem: You dont get the original filename, so you have to transmit it somehow else.
I solved this problem by using a GET-Parameter, which makes a little change in the Java-code necessary:
HttpURLConnection httpUrlConnection = (HttpURLConnection)new URL("http://www.mypage.org/upload.php").openConnection();
changes to
HttpURLConnection httpUrlConnection = (HttpURLConnection)new URL("http://www.mypage.org/upload.php?filename=abc.def").openConnection();
In your PHP-script you change the line
$filename="abc.xyz";
to
$filename=$_GET['filename'];
This solution doesn’t use any external librarys and seems to me much more simple than some of the other posted ones…
Hope I could help anyone:)