I am trying to add a logger to one of my programs, mainly to replace the System.out.println(), and it seems to give me some problems.
This is my first time using a logger, so I am a noob at it.
I had a look at a multitude of links over the past days but still haven't managed to make my logger catch an exception; here are some of the links I looked at (some of them are 5 years old and might need updates):
- oracle simple formatter
- slf4j - interface logger
- slf4j - simple logger
- slf4j - faq
- slf4j - message formatter
- stackoverflow 1
- stackoverflow 2
I am using:
- slf4j-api-1.7.22.jar
- slf4j-simple-1.7.22.jar
- jdk1.8.0_71
- IntelliJ 2016.3.2
The simpleLogger.properties is placed directly in the resources package, this file is loaded before the logger is created, the file is loaded correctly as I can modify the date-time as I need it to be (and other settings work as well).
Part of the Main class:
...
private Logger LOG; //field
...
public static void main(String[] args) {
launch(args);
}
...
@Override
public void start(Stage primaryStage) {
/*Create logger*/
createLogger();
LOG.info("Stage start.");
...
}
...
private void createLogger() {
try {
Properties properties = new Properties();
properties.load(LOGGER_PROPERTIES); //path to prop file
} catch (IOException e) {
e.printStackTrace();
}
LOG = LoggerFactory.getLogger(Main.class);
LOG.info("Logger initialised.");
LOG.trace("test trace"); //not working
LOG.debug("test debug"); //not working
LOG.info("test info");
LOG.warn("test warning");
LOG.error("test error");
}
The simpleLogger.properties file:
org.slf4j.simpleLogger.logFile=System.out
# org.slf4j.simpleLogger.defaultLogLevel=
# org.slf4j.simpleLogger.log.a.b.c=
org.slf4j.simpleLogger.showDateTime=true
org.slf4j.simpleLogger.dateTimeFormat=HH:mm:ss:SSS
org.slf4j.simpleLogger.showThreadName=false
org.slf4j.simpleLogger.showLogName=false
org.slf4j.simpleLogger.showShortLogName=true
org.slf4j.simpleLogger.levelInBrackets=true
# org.slf4j.simpleLogger.warnLevelString=
# THE FORMAT TRIED
#org.slf4j.simpleLogger.SimpleFormatter.format = [%1$tc] %4$s: %2$s - %5$s %6$s%n
#java.util.logging.SimpleFormatter.format = [%1$tc] %4$s: %2$s - %5$s %6$s%n
#java.util.logging.SimpleFormatter.format="%1$tc %2$s%n%4$s: %5$s%6$s%n"
#org.slf4j.simpleLogger.format=[%1$tc] %4$s: %2$s - %5$s %6$s%n %7$s
#org.slf4j.helpers.MessageFormatter.format = [%1$tc] %4$s: %2$s - %5$s %6$s%n %7$s
#java.util.logging.SimpleFormatter.format="%1$tc %2$s%n%4$s: %5$s%6$s%n"
Part of the class where I am attempting to create an exception:
LOG.info("Creating window - More info: loading.. .fxml");
try {
BP_INFO = FXMLLoader.load(getClass().getResource("/fxml/ImageInf_.fxml")); //HERE change back to ImageInfo.fxml
LOG.info("Creating window - More info: loaded .fxml successfully.");
} catch (IOException e) {
// HERE not showing anything below
System.out.println("CATCH - From Sys out");
LOG.error("CATCH - EXCEPTION", (Throwable) e);
LOG.error("Creating window - More info: Exception");
LOG.error("Creating window - More info: Exception", e);
LOG.error("Creating window - More info: Exception {}", e);
LOG.error("Creating window - More info: Exception {} {} {}", Level.INFO, e.getMessage(), e);
// e.printStackTrace();
}
Console output:
12:17:08:995 [INFO] Main - Logger initialised.
12:17:08:996 [INFO] Main - test info
12:17:08:997 [WARN] Main - test warning
12:17:08:997 [ERROR] Main - test error
12:17:08:997 [INFO] Main - Stage start.
...
12:17:27:140 [INFO] View - Creating window - More info: loading.. .fxml
Exception in thread "JavaFX Application Thread" java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
at javafx.fxml.FXMLLoader$MethodHandler.invoke(FXMLLoader.java:1774)
at javafx.fxml.FXMLLoader$ControllerMethodEventHandler.handle(FXMLLoader.java:1657)
...
Problem 1:
As you can see trace and debug are not working. I have tried all the properties in the prop. file and some more as well but so far did not manage to catch any exception or apply a specific format.
Problem 2:
As you can see, the exception is also not logged at all.
Additional info: I have reset IntelliJ settings, I have been cleaning the win %temp% folder various times, I have been cleaning caches and restarted Intellij various times; all this in an attempt if the prop. file was not read correctly or kept somewhere in a cache.
Any help is much appreciated. Please respond in a simplistic way.
