通过接口修改logback日志级别

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@GetMapping("setLoggerLevel")     public R setLogger(String level, HttpServletRequest request) {         String packageName = "com.xxx.xxx.xxx";         LoggerContext loggerContext = (LoggerContext) LoggerFactory.getILoggerFactory();         switch (level) {             case "error":                 loggerContext.getLogger(packageName).setLevel(Level.ERROR);                 break;             case "warn":                 loggerContext.getLogger(packageName).setLevel(Level.WARN);                 break;             case "info":                 loggerContext.getLogger(packageName).setLevel(Level.INFO);                 break;             case "debug":                 loggerContext.getLogger(packageName).setLevel(Level.DEBUG);                 break;             default:                 return R.error("参数错误");         }         return R.ok("日志级别已经设置为" + level);     }