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();}