I am trying to use selenium in a mini web crawler to get the page source. My output log is invaded by selenium logs, is there a way to totally disable the logging or just re
Drunk Cat's answer is right and very useful to get rid of 100's of pointless info messages in a log. Maybe use java.util.logging.Logger.getLogger("org.openqa.selenium").setLevel(Level.SEVERE);
to catch errors (Level.SEVERE instead of Level.OFF)
Chromedriver v83 (2020 Update)
Note that an alternate to setting the property:
System.setProperty(ChromeDriverService.CHROME_DRIVER_SILENT_OUTPUT_PROPERTY, "true");
is something like this:
DriverService.Builder serviceBuilder = new ChromeDriverService.Builder().withSilent(true);
ChromeOptions options = new ChromeOptions();
// ... addArguments to options ....
ChromeDriverService chromeDriverService = (ChromeDriverService)serviceBuilder.build();
ChromeDriver driver = new ChromeDriver(chromeDriverService, options);
However, for whatever reason neither .withSilent(true)
or setting the property work on Chromedriver v83 (confirmed on Linux and Windows). I needed to add a line of code to re-direct output:
:
ChromeDriverService chromeDriverService = (ChromeDriverService)serviceBuilder.build();
chromeDriverService.sendOutputTo(new FileOutputStream("/dev/null"));
ChromeDriver driver = new ChromeDriver(chromeDriverService, options);
You could just substitute "/dev/nul" with a real file if you wanted (for debugging, etc). Or a platform independent way of dealing with null output that works with Java 8+ :
chromeDriverService.sendOutputTo(new OutputStream(){@Override public void write(int b){}});
My guess is that this may be a bug in the v83 release, but at least it got me to find another way of re-directing or shutting off chromedriver logging.