How to debug this applet ?
Display/storage of the debug message
The UploadPolicy contains a displayDebug method. This method :
Displays the message on the status bar (on the
bottom of the applet), if the current debugLevel is greater
or equals to the level given to this method. To have no debug
output, put this applet parameter to 0 ... or omit debugLevel, as 0
is the default level. 100 is the maximum debugLevel. As I didn't
documente nor really manage the different values of this level...
Let's say you may have 0 or 100 (debug off or on).
Regardless of the log level, messages are always
stored in a temporary log file (since version 2.9.2rc4). This file
is named "jupload_xxxxx_log.txt" where xxxxx is a uniqe number and
located in the platform-dependant temp directory. It is deleted upon
VM exit.
Getting the debug output
The code contains a lot of calls to the displayDebug method. To retrieve
the output generated by these calls:
If you are in debug mode, you can copy the full
status area, to get the recent lines of debug output. In order to
save memory, the status area is limited to 1000 lines.
If not in debug mode and the parameter urlToSendErrorTo
is set, then - if a fatal error occurs - the user will be asked to
submit the full log (from the log file). If she agrees, the applet
will send the log to the specified URL using an HTTP POST. This
allows you to log the error, send a mail to the webmaster or do
whatever processing you want on the server side.
Changing the debug level
There are two ways to do this:
Change the server configuration: give the debugLevel
applet parameter, in the applet tag. Put this parameter to 100, to
get the full debug output.
Change the applet configuration, once it is started
(since 2.5). I've hidden this functionnality, to prevent user to
activate this by error. Here is the way to activate the full debug
output: Right-Click on the file liste (since 2.9.0) or the status
area, while holding the CTRL key down. This should open a popmenu:
select the 'debug on' entry. Doing so switch the debug on and off.
If the status area was hidden (with the showStatusBar applet
parameter), it will become visiblen when debug is put on.