sciwizeh 62 Posting Pro in Training

Ok, so I'm working on a web-project, I connected a custom hanlder to the root Logger in contextInitialized() of a ServletContextListener:

public void contextInitialized(ServletContextEvent sce) {
    Logger def = Logger.getLogger("");
    Handler hand = new DatabaseLoggingHandler();

which looks like:

import java.util.logging.LogRecord;
import java.util.logging.Logger;
import java.util.logging.Handler;
import matrixpeckham.db.DBManager;

public class DatabaseLoggingHandler extends Handler {
    private static final Logger LOG =

    public void publish(LogRecord record) {
        String message = record.getMessage();
        String logger = record.getLoggerName();
        Throwable thr = record.getThrown();
        String thrMess = "";
        String thrStack = "";
            PrintWriter str = new PrintWriter(new StringWriter());

    public void flush() {

    public void close() throws SecurityException {


the method that calls is:

public void log(String message, String logger, String thrMess,
            String thrStack) {
        String sql = "insert into schema.`logs` (message, logger, thrmess, thrstack) values (?,?,?,?)";
            PreparedStatement stmt = con.prepareStatement(sql, Statement.RETURN_GENERATED_KEYS);
            stmt.setString(1, message);
            stmt.setString(2, logger);
            stmt.setString(3, thrMess);
            stmt.setString(4, thrStack);
            int i = stmt.executeUpdate();//from here the code was me trying to find out what was happening
            ResultSet rs = stmt.getGeneratedKeys();
                throw new IllegalStateException("Result set did not generate keys properly");
        } catch(SQLException ex){
            //if this happens while trying to log an error it would be bad.
            //do nothing because if we try to log it will recurse 
            //possibly indefinately
            int breakable=0;

the table was made with `

  `id` bigint(20) NOT NULL AUTO_INCREMENT,
  `whenithappened` timestamp NULL DEFAULT CURRENT_TIMESTAMP,
  `message` varchar(4096) DEFAULT NULL,
  `logger` varchar(1024) DEFAULT NULL,
  `thrmess` varchar(4096) DEFAULT NULL,
  `thrstack` varchar(4096) DEFAULT NULL,
  PRIMARY KEY (`id`)

and I have two issues, 1 the "initializing" stuff that gets logged by Glassfish will cause this method to be run more than once, and 2 when an error is generated (I use an intentional int i = 1/0; in a JSP called GenError.jsp) this method is called only once, but I will randomly have 2-5 identical rows (different keys) from the one call. int i = stmt.excecuteUpdate(); sets i to 1, and the ResultSet only contains one generated key, but the database itself has 2-4 new rows all with different keys.

Other insertions with the same connection do not display this issue, it seems to only be this one.

I assume the first problem is easily addressed with some setting logging stuff, the second problem is the one I really need help with. Is there something simple I'm doing wrong that I'm not noticing?

I will post more code if needed/requested to help, but this is the code I assume has the bug.

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