log4j not printing the stacktrace for exceptions

Question

I am using log4j with tomcat. When I log exceptions in my JSPs, servlets:

private Logger _log = Logger.getLogger(this.getClass());
...
try{...} catch (Except         


        

Answer 1

I haven't used the fillStackTrace call, so I cannot comment if that will work. Another approach is to use a little method that returns the formatted text from an Exception.

public static String getStackTrace(Exception e)
{
    StringWriter sWriter = new StringWriter();
    PrintWriter pWriter = new PrintWriter(sWriter);
    e.printStackTrace(pWriter);
    return sWriter.toString();
}

In your logging code, you could write:

logger.error("An exception occurred: " + Utils.getStackTrace(e));