Java PropertyConfigurator.configureAndWatch方法代碼示例

import org.apache.log4j.PropertyConfigurator; //導入方法依賴的package包/類
/**
 * Initializes Log4j logging.
 *
 * @throws ServerException thrown if Log4j could not be initialized.
 */
protected void initLog() throws ServerException {
  verifyDir(logDir);
  LogManager.resetConfiguration();
  File log4jFile = new File(configDir, name + "-log4j.properties");
  if (log4jFile.exists()) {
    PropertyConfigurator.configureAndWatch(log4jFile.toString(), 10 * 1000); //every 10 secs
    log = LoggerFactory.getLogger(Server.class);
  } else {
    Properties props = new Properties();
    try {
      InputStream is = getResource(DEFAULT_LOG4J_PROPERTIES);
      try {
        props.load(is);
      } finally {
        is.close();
      }
    } catch (IOException ex) {
      throw new ServerException(ServerException.ERROR.S03, DEFAULT_LOG4J_PROPERTIES, ex.getMessage(), ex);
    }
    PropertyConfigurator.configure(props);
    log = LoggerFactory.getLogger(Server.class);
    log.warn("Log4j [{}] configuration file not found, using default configuration from classpath", log4jFile);
  }
}
 

import org.apache.log4j.PropertyConfigurator; //導入方法依賴的package包/類
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);
  }
}
 

import org.apache.log4j.PropertyConfigurator; //導入方法依賴的package包/類
public static void initializeLogging()
{
    if (StringUtils.isBlank(System.getProperty("log.file.path")))
    {
        // get the jar file directory, go one step above, and then set to log directory
        String logfilePath = null;
        try
        {
            logfilePath = AbstractJMSClient.class.getProtectionDomain().getCodeSource().getLocation().toURI().getPath();
            logfilePath += File.separator + ".." + File.separator + ".." + File.separator + "log";
            logfilePath = new File(logfilePath).getCanonicalPath();
        }
        catch (Exception e)
        {
            logfilePath = ".";
        }
        System.setProperty("log.file.path", logfilePath);
    }
    if(StringUtils.isBlank(System.getProperty("log.file")))
    {
        System.setProperty("log.file", "jmsclient.log");
    }
    PropertyConfigurator.configure(System.getProperties());

    PropertyConfigurator.configureAndWatch(
            AbstractJMSClient.class.getResource(File.separator + "log4j.properties").getPath(), PROPERTIES_REFRESH);
}
 

import org.apache.log4j.PropertyConfigurator; //導入方法依賴的package包/類
/**
 * Sets the log level for the given logger. If there is no property file to
 * be used, the log level will be set to the value as given in the level
 * parameter.
 * 
 * @param logger
 *            The logger to be modified.
 * @param level
 *            The log level to be set if no property file can be found.
 */
private static void setLogLevel(Log4jLogger logger, Level level) {
    if (logConfigPath != null && new File(logConfigPath).exists()) {
        PropertyConfigurator.configureAndWatch(logConfigPath, 60000);
    } else {
        logger.systemLogger.setLevel(level);
        logger.auditLogger.setLevel(level);

        // used INFO log level as default for the reverse proxy logger
        logger.proxyLogger.setLevel(Level.INFO);

        // all access operations will be logged with info level
        logger.accessLogger.setLevel(Level.INFO);
    }
}
 

import org.apache.log4j.PropertyConfigurator; //導入方法依賴的package包/類
/**
 * 可以動態修改log級別 載入log4j配置文件
 */
public static void init() {
	PropertyConfigurator.configureAndWatch(System.getProperty("user.dir") + "/conf/log4j.properties", 5000L);
}