Laravel 控制器的request

public function request1(Request $request){
    //取值
    $name = Request::input('name');

    //是否有值
    if($request->has('name')){
        echo $request->input('name');
    }

    $res = $request->all();

    //判断请求类型
    echo $request->method();

    if($request->isMethod('POST')){
        echo 'yes';
    }

    //判断是否是ajax
    $res = $request->ajax();

    //判断是否是某控制器下的方法
    $bool = $request->is('student/*');

    //获取当前的url
    echo $request->url();

}