import org.eclipse.jetty.util.DateCache; //导入依赖的package包/类
/**
 * Set up request logging and open log file.
 *
 * @see org.eclipse.jetty.util.component.AbstractLifeCycle#doStart()
 */
@Override
protected synchronized void doStart() throws Exception
{
  if (_logDateFormat != null)
  {
    // FIXME _logTimeZone should be used for DateCache but Jetty 8's implementation doesn't support it
    _logDateCache = new DateCache(_logDateFormat, _logLocale);
  }

  if (_ignorePaths != null && _ignorePaths.length > 0)
  {
    _ignorePathMap = new PathMap();
    for (int i = 0; i < _ignorePaths.length; i++)
      _ignorePathMap.put(_ignorePaths[i], _ignorePaths[i]);
  }
  else
    _ignorePathMap = null;

  super.doStart();
}
 

import org.eclipse.jetty.util.DateCache; //导入依赖的package包/类
public AsyncRequestLog(Clock clock,
                       AppenderAttachableImpl<ILoggingEvent> appenders,
                       final TimeZone timeZone,
                       List<String> cookies) {
    this.clock = clock;
    this.cookies = cookies;
    this.queue = new LinkedBlockingQueue<String>();
    this.dispatcher = new Dispatcher();
    this.dispatchThread = new Thread(dispatcher);
    dispatchThread.setName("async-request-log-dispatcher-" + THREAD_COUNTER.incrementAndGet());
    dispatchThread.setDaemon(true);

    this.dateCache = new ThreadLocal<DateCache>() {
        @Override
        protected DateCache initialValue() {
            final DateCache cache = new DateCache("dd/MMM/yyyy:HH:mm:ss Z", Locale.US);
            cache.setTimeZoneID(timeZone.getID());
            return cache;
        }
    };

    this.appenders = appenders;
}
 

import org.eclipse.jetty.util.DateCache; //导入依赖的package包/类
protected void doStart() throws Exception
{
    if (_logDateFormat!=null)
    {       
        _logDateCache = new DateCache(_logDateFormat, _logLocale);
        _logDateCache.setTimeZoneID(_logTimeZone);
    }
    
    if (_filename != null) 
    {
        _fileOut = new RolloverFileOutputStream(_filename,_append,_retainDays,TimeZone.getTimeZone(_logTimeZone),_filenameDateFormat,null);
        _closeOut = true;
        Log.getLogger((String)null).info("Opened "+getDatedFilename());
    }
    else 
        _fileOut = System.err;
    
    _out = _fileOut;
    
    if (_ignorePaths != null && _ignorePaths.length > 0)
    {
        _ignorePathMap = new PathMap();
        for (int i = 0; i < _ignorePaths.length; i++) 
            _ignorePathMap.put(_ignorePaths[i], _ignorePaths[i]);
    }
    else 
        _ignorePathMap = null;
    
    _writer = new OutputStreamWriter(_out);
    _buffers = new ArrayList<Utf8StringBuilder>();
    _copy = new char[1024];
    super.doStart();
}