SpringBoot如何通过代码配置LogBack？

Question

SpringBoot如何通过代码配置LogBack？

如Log4j2通过代码配置。

@Configuration
public class LoggerConfigurer {
    
    @Bean
    public Configuration createConfiguration() {
        ConfigurationBuilder<BuiltConfiguration> builder = newConfigurationBuilder();
        builder.setStatusLevel(Level.ERROR);
        builder.add(builder.newFilter("ThresholdFilter", Filter.Result.ACCEPT, Filter.Result.NEUTRAL).
            addAttribute("level", Level.DEBUG));
        AppenderComponentBuilder appenderBuilder = builder.newAppender("Stdout", "CONSOLE").
            addAttribute("target", ConsoleAppender.Target.SYSTEM_OUT);
        appenderBuilder.add(builder.newLayout("PatternLayout").
            addAttribute("pattern", "%d [%t] %-5level: %msg%n%throwable"));
        appenderBuilder.add(builder.newFilter("MarkerFilter", Filter.Result.DENY,
            Filter.Result.NEUTRAL).addAttribute("marker", "FLOW"));
        builder.add(appenderBuilder);
        builder.add(builder.newLogger("org.apache.logging.log4j", Level.DEBUG).
            add(builder.newAppenderRef("Stdout")).
            addAttribute("additivity", false));
        builder.add(builder.newRootLogger(Level.ERROR).add(builder.newAppenderRef("Stdout")));
        return builder.build();
    }
}

Answer 1

Java代码实现LogBack动态输出日志