import io.undertow.server.handlers.accesslog.AccessLogHandler; //导入依赖的package包/类
private AccessLogHandler createAccessLogHandler(HttpHandler handler) {
	try {
		createAccessLogDirectoryIfNecessary();
		AccessLogReceiver accessLogReceiver = new DefaultAccessLogReceiver(
				createWorker(), this.accessLogDirectory, "access_log.");
		String formatString = (this.accessLogPattern != null) ? this.accessLogPattern
				: "common";
		return new AccessLogHandler(handler, accessLogReceiver, formatString,
				Undertow.class.getClassLoader());
	}
	catch (IOException ex) {
		throw new IllegalStateException("Failed to create AccessLogHandler", ex);
	}
}
 

import io.undertow.server.handlers.accesslog.AccessLogHandler; //导入依赖的package包/类
private AccessLogHandler createAccessLogHandler(HttpHandler handler) {
	try {
		createAccessLogDirectoryIfNecessary();
		AccessLogReceiver accessLogReceiver = new DefaultAccessLogReceiver(
				createWorker(), this.accessLogDirectory, "access_log");
		String formatString = (this.accessLogPattern != null) ? this.accessLogPattern
				: "common";
		return new AccessLogHandler(handler, accessLogReceiver, formatString,
				Undertow.class.getClassLoader());
	}
	catch (IOException ex) {
		throw new IllegalStateException("Failed to create AccessLogHandler", ex);
	}
}
 

import io.undertow.server.handlers.accesslog.AccessLogHandler; //导入依赖的package包/类
private static HttpHandler buildAccessLogHandler(UndertowServerConfig config, HttpHandler nextHandler)
{
    Path path = Paths.get(config.getAccessLogPath().get()).toAbsolutePath().normalize();

    try {
        Files.createDirectories(path);
    }
    catch (IOException ex) {
        throw Throwables.propagate(ex);
    }

    Executor logWriterExecutor = Executors.newCachedThreadPool(
            new ThreadFactoryBuilder()
            .setDaemon(false)  // non-daemon
            .setNameFormat("access-log-%d")
            .build()
            );

    AccessLogReceiver logReceiver = new DefaultAccessLogReceiver(logWriterExecutor, path.toFile(), "access.", "log");

    if (JsonLogFormatter.isJsonPattern(config.getAccessLogPattern())) {
        return new AccessLogHandler(nextHandler, logReceiver,
                config.getAccessLogPattern(),  // this name is used by AccessLogHandler.toString
                JsonLogFormatter.buildExchangeAttribute(
                    config.getAccessLogPattern(),
                    GuiceRsBootstrap.class.getClassLoader()));
    }
    else {
        return new AccessLogHandler(nextHandler, logReceiver,
                config.getAccessLogPattern(),
                GuiceRsBootstrap.class.getClassLoader());
    }
}
 

import io.undertow.server.handlers.accesslog.AccessLogHandler; //导入依赖的package包/类
public static AccessLogHandler accessLog(HttpHandler next, Logger logger) {
    return new AccessLogHandler(next, new Slf4jAccessLogReceiver(logger), "combined", CustomHandlers.class.getClassLoader());
}