'urlManager' => [   

                        'enablePrettyUrl' => true,

                        'showScriptName' => false,

                        'enableStrictParsing' => true,

                        'suffix' => ".html",

                        'rules' => [ '' => 'site/index', // 如果没有这里，则访问域名不能直接打开默认Action

                        ]

                ]   

$config = [

        'id' => 'basic',  

        //'defaultRoute'=>'site/index',

...

  'urlManager' => [

        'enablePrettyUrl' => true,

        //'enableStrictParsing' => false,

        'showScriptName' => false,

        'rules' => [

            ['class' => 'yii\rest\UrlRule', 'controller' => ['v1/store','v1/order','v1/user','v1/brand','v1/coupon','v1/product']],

//            ['class' => 'yii\rest\UrlRule', 'controller' => ['v2/store','v2/order','v2/user']],

        ],

        ]