KMSWebApp.java 文件源码

private void initLogging(String confDir) {
  if (System.getProperty("log4j.configuration") == null) {
    System.setProperty("log4j.defaultInitOverride", "true");
    boolean fromClasspath = true;
    File log4jConf = new File(confDir, LOG4J_PROPERTIES).getAbsoluteFile();
    if (log4jConf.exists()) {
      PropertyConfigurator.configureAndWatch(log4jConf.getPath(), 1000);
      fromClasspath = false;
    } else {
      ClassLoader cl = Thread.currentThread().getContextClassLoader();
      URL log4jUrl = cl.getResource(LOG4J_PROPERTIES);
      if (log4jUrl != null) {
        PropertyConfigurator.configure(log4jUrl);
      }
    }
    LOG = LoggerFactory.getLogger(KMSWebApp.class);
    LOG.debug("KMS log starting");
    if (fromClasspath) {
      LOG.warn("Log4j configuration file '{}' not found", LOG4J_PROPERTIES);
      LOG.warn("Logging with INFO level to standard output");
    }
  } else {
    LOG = LoggerFactory.getLogger(KMSWebApp.class);
  }
}