`'urlManager' => [

        'class' => 'yii\web\UrlManager',
        'enablePrettyUrl' => true,
        'enableStrictParsing' => true,
        'showScriptName' => false,
        'rules' => [
            [
                'class' => 'yii\rest\UrlRule',
                'controller' => 'news',
                'pluralize' => false,
            ],
        ],
    ]`

'pluralize' => false代表去掉restful中默认使用的复数形式（s）;