两种同时用，防止互串，idParam，authTimeoutParam，absoluteAuthTimeoutParam，returnUrlParam 这几个都要配置下
`
'user' => [

  'identityClass' => 'common\models\Member',
  'enableAutoLogin' => true,
  'loginUrl' => '/member/public/login',
  'identityCookie' => ['name' => '_identity-frontend', 'httpOnly' => true],
  'on afterLogin' => function($event) {
      $user = $event->identity; //这里的就是User Model的实例
      $user->last_login_at = time();
      $user->login_ip = \Yii::$app->request->getUserIP();
      $user->login_num += 1;
      $user->save();
  },
],
'saler' => [
  'class' => 'yii\web\User',
  'identityClass' => 'common\models\StoreUser',
  'enableAutoLogin' => true,
  'loginUrl' => '/saler/public/login',
  'idParam' => '__storeuser_id',
  'authTimeoutParam' => '__storeuser_expire',
  'absoluteAuthTimeoutParam' => '__storeuser_absoluteExpire',
  'returnUrlParam' => '__storeuser_returnUrl',
  'identityCookie' => ['name' => '_identity-storeadmin', 'httpOnly' => true],
  'on afterLogin' => function($event) {
      $user = $event->identity; //这里的就是User Model的实例
      $user->last_login_at = time();
      $user->last_login_ip = \Yii::$app->request->getUserIP();
      $user->login_num += 1;
      $user->save();
  },`