SpringBoot中的Logback编程配置

Question

我试图在Spring Boot中以编程方式配置logback。我要求不要在我的项目中使用任何XML文件。我使用logback-extensions来创建我的logback appenders等。

@Configuration
public class LoggingConfig {

    @Bean
    // NOTE: THIS DOES NOT DO WHAT I EXPECT IT TO
    public LogbackConfigListener logbackConfigListener() {
        return new LogbackConfigListener();
    }

    @Bean
    public static ApplicationContextHolder applicationContextHolder() {
        return new ApplicationContextHolder();
    }

    @Bean
    public static LoggerContext loggerContext() {
        return (LoggerContext) LoggerFactory.getILoggerFactory();
    }

    @Bean(initMethod = "start", destroyMethod = "stop")
    public static LayoutWrappingEncoder encoder(LoggerContext ctx) {
        LayoutWrappingEncoder encoder = new LayoutWrappingEncoder();
        encoder.setContext(ctx);
        return encoder;
    }

    @Bean(initMethod = "start", destroyMethod = "stop")
    public static ConsoleAppender consoleAppender(LoggerContext ctx, LayoutWrappingEncoder encoder) {
        ConsoleAppender appender = new ConsoleAppender();
        appender.setContext(ctx);
        appender.setEncoder(encoder);
        return appender;
    }

}

然而，我从他们的文档中得到了一个步骤。我应该在web.xml中添加一个LogbackConfigListener。我如何在Spring Boot中实现这一目标？