GWT logging setup

Question

I\'m using GWT 2.1 java.util.logging emulation to log client side messages. According to the doc, two Formatters are provided (TextFormatter and HTMLFormatter) which are app

Answer 1

Here is a simple example of adding a Log handler to the Root logger. The logger uses the HTMLLogFormatter and puts the message in a HTML widget.

HTML html = new HTML();
// add the html widget somewhere in your code.
Logger.getLogger("").addHandler(new Handler() {
  {
    // set the formatter, in this case HtmlLogFormatter
    setFormatter(new HtmlLogFormatter(true));
    setLevel(Level.ALL);
  }

  @Override
  public void publish(LogRecord record) {
    if (!isLoggable(record)) {
      Formatter formatter = getFormatter();
      String msg = formatter.format(record);

      html.setHTML(msg);
    }
  }
});

Also have a look at HasWidgetsLogHandler, which basically does what the handler in the example above does.