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    --- tags: laravel --- # File Upload 檔案上傳 ![](https://i.imgur.com/SKo9f1H.png) > 這一節說明如何實作檔案上傳功能,包含一般檔案和圖片檔案。如希望保護檔案,可以改存到 storage 資料夾內。 ## 知識點 1.安裝 Intervention Image 套件 因為處理圖片處理需要安裝這個套件,請利用Composer來安裝,指令如下: composer require intervention/image 關於此套件的介紹,請參考網址:http://image.intervention.io/ ## 知識點 2.準備可以上傳檔案的檔案輸入項與表單 這裡示範使用Form套件來建立表單和輸入項,如果需要了解Form套件的相關資訊,請參考以下這裡。 [Laravel Collective](https://laravelcollective.com/docs/5.4/html) {{ Form::open([...,'files'=>true]) }} //要加上files屬性 //表單內容 <!-- picUpload 圖片上傳 --> @if (isset($errors) and $errors->has('picUpload')) <div class="form-group has-error"> {{ Form::label('picUpload','圖片上傳') }}&nbsp;&nbsp;{{ Form::label('picUpload',$errors->first('picUpload'),['class'=>'text-danger control-label','for'=>'inputError']) }}<br> {{ Form::file('picUpload[]',['multiple'=>true]) }} //multiple表示可支持傳多檔案 </div> @else <div class="form-group"> {{ Form::label('picUpload','圖片上傳') }}<br> {{ Form::file('picUpload[]',['multiple'=>true]) }} </div> @endif {{ Form::close() }} ## 知識點 3.如何在控制器函式處理圖片上傳 //如果有圖檔上傳... if (isset($inputs['picUpload'])) { $fileNames = PublicUtil::picsUpload($request); //圖片上傳處理 //pic輸入項處理 if (isset($fileNames)) { $inputs['pic'] = ''; foreach ($fileNames as $value) { if (strlen($inputs['pic']) > 0) { //支援多檔上傳處理 $inputs['pic'] = $inputs['pic'] . ','; } $inputs['pic'] = $inputs['pic'] . 'images/upload/' . $value; } } else { //送出flash訊息 $request->session()->flash('error', '圖片上傳失敗!'); } } else { } } PS:裡頭有使用到PublicUtil函式庫,使用前記得要匯入PublicUtil.php ## 知識點 4.如何確保所上傳的檔案真的是某特定檔案 1.如需確認所上傳檔案是否為圖片,可以在validation的rules加上image 2.如需確認所需支援的副檔名,可以在validation的rules加上以下規則格式: 'pics' => 'mimes:jpeg,bmp,png' //可接受的副檔名需為jpeg.bmp.png PS:如果輸入項要支援多檔上傳,導致其值為陣列,驗證規則就需修改如下: 'pics.*' => 'mimes:jpeg,bmp,png' //支援多檔案驗證,加上.* ## 知識點 5.如何在控制器函式處理檔案上傳 //附件处理 if (isset($inputs['attachmentUpload']) and $inputs['attachmentUpload'][0] != null) { $fileNames = PublicUtil::filesUpload($request, 'attachmentUpload',true); if (isset($fileNames) && count($fileNames) > 0) { $inputs['attachment'] = implode(',', $fileNames); } } PS0:請在想要儲存的資料夾內新增files/upload子資料夾,並開放存取權限,資料夾包含了storage/app/public以及public。 PS1:裡頭有使用到PublicUtil函式庫,使用前記得要匯入PublicUtil.php PS2:PublicUtil有使用到Input這個類別,如果你打算自己寫處理檔案的函式,需要在 config/app.php的aliases加入以下程式碼: .... 'Input' => Illuminate\Support\Facades\Input::class, .... 並且要加入use Input; ## 知識點 6.如果存在 storage/app/public 資料夾,該如何取用? 可使用storage_path()來取得storage路徑,接著使用response的download方法,如下範例所示: $path = storage_path() . '/app/public/files/upload/1.pdf'; return response()->download($path); //請使用download()來實作下載

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