IOC Container的工作机制

是用chrome，现在又能看了…

FatalThrowableError in WxapiController.php line 14:
Type error: Argument 1 passed to App\Http\Controllers\WxapiController::getAccessToken() must be an instance of Illuminate\Http\Request, none given, called in /Applications/MAMP/htdocs/xxyye/app/Http/Controllers/SchoolController.php on line 26

我是这么调用的！！
class SchoolController extends Controller
{

public function huoqu(WxapiController $wxapiController)
{
    var_dump($wxapiController->getAccessToken());
}

}

class WxapiController extends Controller
{
public function getAccessToken(Request $request){
return $request;
}
}

能跟我说说，为什么得不到request对象实例吗？