CODEWITHSUNDEEP
javagwtlogging
jurchiks
jurchiks

Reputation: 1404

How to make the logging work in GWT projects?

I tried to search for an answer for at least an hour, tried all the ways I could find but I can't make the damn thing to log anything from server code.
If I use System.out.println() in client classes, the console logs it just fine, but when I try the same in anything server-side, it just doesn't work!

Anyway, the test class is here: http://pastebin.com/e6XgeUuX

For example, I want to log the uploadsFolder value.
I've tried the following, and none of them worked (no output in Eclipse console, not in .gwt-log, nowhere): 

System.out.println(uploadsFolder.getPath());
GWT.log(uploadsFolder.getPath());
log.info(uploadsFolder.getPath()); // by creating an ordinary java.util.Logger in the body of the class

What do I have to do to make it just log anything I want to log? Why doesn't even System.out.println() work??
I'm totally new to this nightmare so I'll need a thorough explanation, not just "read this".

P.S. I'm trying to make an image gallery with this; I've made the front-end, but now I'm trying to make it save the images on the disk, not in memory and for that I need to know if and where it creates the upload folder (I can't find any ways to find out the path of the war folder...)

Upvotes: 2

Views: 1767

Answers (2)

Graham
Graham

Reputation: 192

None of these can be used when the code is compiled into JavaScript (GWT.log() is used for HostedMode logging). There is this library gwt-log that I've had a lot of success with before, it allows you to log to a file via RPC and many other options.

Upvotes: 0

Rohan
Rohan

Reputation: 7976

Have you tried this?

Logger logger = Logger.getLogger("NameOfYourLogger");
logger.log(Level.SEVERE, "this message should get logged");

This always works for me serverside, System.out.println("") also for that matter.

And perhaps there is something wrong with your uploadsFolder object, try appending something before it like:

logger.log("My Path for uploads:"+ uploadsFolder.getPath());

Upvotes: 2

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