Mega Code Archive
Creating a Custom Formatter for a Logger Handler
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import java.util.Date;
import java.util.logging.FileHandler;
import java.util.logging.Formatter;
import java.util.logging.Handler;
import java.util.logging.Level;
import java.util.logging.LogRecord;
import java.util.logging.Logger;
class MyHtmlFormatter extends Formatter {
public String format(LogRecord rec) {
StringBuffer buf = new StringBuffer(1000);
if (rec.getLevel().intValue() >= Level.WARNING.intValue()) {
buf.append("<b>");
buf.append(rec.getLevel());
buf.append("</b>");
} else {
buf.append(rec.getLevel());
}
buf.append(' ');
buf.append(rec.getMillis());
buf.append(' ');
buf.append(formatMessage(rec));
buf.append('\n');
return buf.toString();
}
public String getHead(Handler h) {
return "<HTML><HEAD>" + (new Date()) + "</HEAD><BODY><PRE>\n";
}
public String getTail(Handler h) {
return "</PRE></BODY></HTML>\n";
}
}
public class Main {
public static void main(String[] argv) throws Exception {
Logger logger = Logger.getLogger("com.mycompany");
FileHandler fh = new FileHandler("mylog.html");
fh.setFormatter(new MyHtmlFormatter());
logger.addHandler(fh);
logger.setLevel(Level.ALL);
logger.severe("my severe message");
logger.info("my info message");
logger.entering("Main class", "myMethod", new Object[] { "para1", "para2" });
}
}
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