PreLaunchUpdateApplication.java 文件源码

private static void initializeLogger() throws IOException
{
    String logConfigFileName = ApplicationArguments.getInstance().getLoggingConfigFileName();
    if (logConfigFileName != null) {
        PropertyConfigurator.configure(logConfigFileName);
    } else {
        ApplicationFiles appFiles = new ApplicationFiles();

        String logMessagePattern = "%-4r [%t] %-5p %c %x - %m%n";
        Layout layout = new PatternLayout(logMessagePattern);

        File logsDir = new File(appFiles.getUserSettingsDirectory(), "logs");
        File updateLogFile = new File(logsDir, "updater.log");

        FileAppender appender = new FileAppender(layout, updateLogFile.getAbsolutePath());

        LoggerController.registerLoggerFactory(new SquirrelLoggerFactory(appender, false));
    }
}