jQuery in Action, 3rd edition
The moose likes Java in General and the fly likes Reading log file using Java Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login
JavaRanch » Java Forums » Java » Java in General
Bookmark "Reading log file using Java" Watch "Reading log file using Java" New topic

Reading log file using Java

nazzy khan
Ranch Hand

Joined: May 06, 2010
Posts: 39


I have a requirement where I have to setup a cron job using java which will connect to a unix box and read the app server log files by SSH library, like JSch.

Basically I have to read three things from log:

1. Exception stack trace/error code (app generated) if there is any,
2. User sessionID.
3. Time Stamp.

Connecting to unix box using third party code is fine. Challenge here for me is extracting the session id and timestamp each time an exception error occur on our servers.

I know that log file is a plain text file so, java pattern and string manipulation is required here.

Could anyone give me some ways to do this

nazzy khan
Ranch Hand

Joined: May 06, 2010
Posts: 39

Sorry I guess I have posted it in the wrong forum.

Moderators: Could you please move it to "Java in General" or in appropriate forum if required


Paul Clapham

Joined: Oct 14, 2005
Posts: 19973

You have a big bag of miscellaneous requirements there. So when you ask how to do "this", you ask a very unclear question. What is "this"? Do you not know how to do any of those things? Or do you have questions about some of them? If so, which ones?
Victor Ramen
Ranch Hand

Joined: Jul 14, 2008
Posts: 56
Are you asking for how to parse a file for a particular text using java?
I agree. Here's the link: http://aspose.com/file-tools
subject: Reading log file using Java
It's not a secret anymore!