Server this 属性

this.app

[
  '_events',
  '_eventsCount',
  '_maxListeners',
  'subdomainOffset',
  'proxyIpHeader',
  'maxIpsCount',
  'middleware',
  'context',
  'request',
  'response',
  'timing',
  'options',
  '_options',
  'console',
  'BaseContextClass',
  'Controller',
  'Service',
  'lifecycle',
  'loader',
  'ContextCookies',
  'ContextLogger',
  'ContextHttpClient',
  'HttpClient',
  'messenger',
  '_unhandledRejectionHandler',
  'cluster',
  'Subscription',
  'BaseHookClass',
  'Boot',
  'server',
  'sessionStore',
  'injectCsrf',
  'injectNonce',
  'injectHijackingDefense',
  'safeCurl',
  'jsonp',
  'LogRotator',
  'view',
  'nunjucks',
  'package',
  'allPackage',
  '__',
  'watcher',
  'schedules',
  'runSchedule',
  'validator',
  'serviceClasses',
  'middlewares',
  'controller'
]