Laravel 5 下载文件不起作用

我正在尝试创建下载文件功能，但它不起作用，它给我一个错误： “文件“/storage/app/candidates/cvs/3/1493594353.pdf”不存在，但我只是在查看文件，文件就在那里

我错过什么了吗

注：我使用的是laravel 5.4

文件结构：

storage
- app
-- candidates
---cvs
----3
-----1493594353.pdf
- public

路线：

Route::post('candidate/cv/download-cv/','CurriculumVitaeController@downloadCV');

控制器：

public function downloadCV()
    {

        $candidate = Candidate::where('user_id',Auth::user()->id)->first();
        $candidateCv = CandidateCv::where('candidate_id',$candidate->id)->first();


        $path = Storage::url('app/candidates/cvs/'.$candidate->id.'/'.$candidateCv->cv);
        $headers = ['Content-Type: application/pdf'];
        $newName = 'cv-'.time().'.pdf';

        return response()->download($path, $newName, $headers);

    }

---

将控制器下载方法更改为：

public function downloadCV()
{

    $candidate = Candidate::where('user_id',Auth::user()->id)->first();
    $candidateCv = CandidateCv::where('candidate_id',$candidate->id)->first();


    $path = storage_path().'/app/candidates/cvs/'.$candidate->id.'/'.$candidateCv->cv;
    $headers = ['Content-Type: application/pdf'];
    $newName = 'cv-'.time().'.pdf';

    return response()->download($path, $newName, $headers);
}

此外，为了使事情更加动态，您可以动态分配

内容类型

和返回的文件扩展名，如下所示：

public function downloadCV()
{

    $candidate = Candidate::where('user_id',Auth::user()->id)->first();
    $candidateCv = CandidateCv::where('candidate_id',$candidate->id)->first();


    $path = storage_path().'/app/candidates/cvs/'.$candidate->id.'/'.$candidateCv->cv;
    $headers = ['Content-Type: '.Storage::mimeType('/app/candidates/cvs/'.$candidate->id.'/'.$candidateCv->cv)];
    $newName = 'cv-'.time().'.'.pathinfo($path, PATHINFO_EXTENSION);

    return response()->download($path, $newName, $headers);
}

---

谢谢crabbly，还有一个关于内容类型的问题，文件可以是pdf、doc或txt，如何根据使用的文件类型更改内容类型标题？