angularjs - 如何使用 CORS 以 Angular 上传文件

Question

我使用的是 restangular 1.51 和 angular 1.6。我的 html 看起来像这样

<input type="file" name="file" />

和 Angular 代码(基于讨论 here ):

let directive = {
  ..
  link: (scope, element, attrs) => {
        let inputElement = angular.element(element[0].querySelector('input'));
        inputElement.bind('change', function () {
        var formData = new FormData();
        formData.append('file', inputElement[0].files[0]);

        API.all('stores/csv').withHttpConfig({transformRequest: angular.identity})             .customPOST(formData,'' , undefined,
          { 'Content-Type': undefined }).then((response) => {console.log(response);
          });
    });

laravel 代码:

public function upload(Request $request)
{

    $this->validate($request, [
        'file' => 'required',
        'type'  => 'in:csv,xls,xlsx',
        ]);

    $file = $request->file('file');
    var_dump($file);
    return response()->success(['file' => $file]);
}

这里的 $file 在 laravel 转储中显示为一个空数组。文档对此非常糟糕。想法？

更新

使用 postman 它工作得很好。这是 postman 生成的 curl :

postman curl :

curl -X POST \
  http://127.0.0.1:8000/api/stores/csv \
  -H 'Accept: application/x.toters.v1+json' \
  -H 'Authorization: Bearer ***' \
  -H 'Cache-Control: no-cache' \
  -H 'Content-Type: application/x-www-form-urlencoded' \
  -H 'Postman-Token: 4f9d2f3b-551b-aa47-4f65-98c7582f2919' \
  -H 'content-type: multipart/form-data; boundary=----WebKitFormBoundary7MA4YWxkTrZu0gW' \
  -F file=@/Users/Shared/Download/bac-383-store-update.csv

postman 服务器日志

[2018-03-03 06:35:18] local.INFO: ----------------------------- [] []
[2018-03-03 06:35:18] local.INFO: POST api/stores/csv [] []
[2018-03-03 06:35:18] local.INFO: array (   'file' =>    Illuminate\Http\UploadedFile::__set_state(array(      'test' => false,      'originalName' => 'bac-383-store-update.csv',      'mimeType' => 'text/csv',      'size' => 62,      'error' => 0,   )), ) [] []
[2018-03-03 06:35:18] local.INFO: Status code: 200 [] []
[2018-03-03 06:35:18] local.INFO: User id: 104 [] []

---

这是restangular生成的 curl

restangular(两个请求 - 使用 chrome)curl:

curl 'http://127.0.0.1:8000/api/stores/csv' 
-X OPTIONS 
-H 'Access-Control-Request-Method: POST' 
-H 'Origin: http://localhost:3000' 
-H 'Accept-Encoding: gzip, deflate, br' 
-H 'Accept-Language: en-US,en;q=0.9' 
-H 'User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.186 Safari/537.36' 
-H 'Accept: */*' 
-H 'Connection: keep-alive' 
-H 'Access-Control-Request-Headers: authorization,content-type' 
--compressed


curl 'http://127.0.0.1:8000/api/stores/csv' 
-H 'Origin: http://localhost:3000' 
-H 'Accept-Encoding: gzip, deflate, br' 
-H 'Accept-Language: en-US,en;q=0.9' 
-H 'Authorization: Bearer eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJzdWIiOjEwNCwiaXNzIjoiaHR0cDpcL1wvMTkyLjE2OC4wLjIzMjo4MDAwXC9hcGlcL3VzZXJzXC9sb2dpbiIsImlhdCI6MTUxOTk2OTAzNiwiZXhwIjoxNjE0NTc3MDM2LCJuYmYiOjE1MTk5NjkwMzYsImp0aSI6IndHV0UzRjhYQ3hRdDBGOWMifQ.XqySEIprbxtAU-RfhOgtFkScN1nUuuXEwMxCltfjqu8' 
-H 'Content-Type: application/json' 
-H 'Accept: application/x.toters.v1+json' 
-H 'Referer: http://localhost:3000/?local/' 
-H 'User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.186 Safari/537.36' 
-H 'Connection: keep-alive' 
--data-binary $'------WebKitFormBoundary9ApCHw2ykmLYK2IY\r\nContent-Disposition: form-data; name="file"; filename="bac-383-store-update.csv"\r\nContent-Type: text/csv\r\n\r\n\r\n------WebKitFormBoundary9ApCHw2ykmLYK2IY--\r\n' --compressed

restangular/chrome 服务器日志

[2018-03-03 06:34:52] local.INFO: ----------------------------- [] []
[2018-03-03 06:34:52] local.INFO: OPTIONS api/stores/csv [] []
[2018-03-03 06:34:52] local.INFO: array ( ) [] []
[2018-03-03 06:34:52] local.INFO: Status code: 200 [] []
[2018-03-03 06:34:52] local.INFO: ----------------------------- [] []
[2018-03-03 06:34:52] local.INFO: POST api/stores/csv [] []
[2018-03-03 06:34:52] local.INFO: array ( ) [] []
[2018-03-03 06:34:52] local.INFO: Status code: 200 [] []
[2018-03-03 06:34:52] local.INFO: User id: 104 [] []

更新 2:

比较两个 curls 之间的 header 后，我注意到内容类型不同:

postman curl 片段

-H 'Content-Type: application/x-www-form-urlencoded' \

restangular curl 片段

-H 'Content-Type: application/json' 

考虑到长方形的人 PROMISED，这令人震惊通过使用上述语法，内容类型应为 application/x-www-form-urlencoded:

Restangular.all('users') .withHttpConfig({transformRequest: angular.identity}) .customPOST(formData, undefined, undefined, { 'Content-Type': undefined }); This basically tells the request to use the Content-Type: multipart/form-data as the header.

所以我这样写:

    API.all('stores/csv').withHttpConfig({transformRequest: angular.identity})
    .customPOST(formData, undefined, undefined,
      { 'Content-Type': 'application/x-www-form-urlencoded' }).then((response) => {console.log(response);

这稍微改善了一些..现在比较两个卷发:

postman

curl -X POST \
  http://127.0.0.1:8000/api/stores/csv \
  -H 'Accept: application/x.toters.v1+json' \
  -H 'Authorization: Bearer ***' \
  -H 'Cache-Control: no-cache' \
  -H 'Content-Type: application/x-www-form-urlencoded' \
  -H 'Postman-Token: 4f9d2f3b-551b-aa47-4f65-98c7582f2919' \
  -H 'content-type: multipart/form-data; boundary=----WebKitFormBoundary7MA4YWxkTrZu0gW' \
  -F file=@/Users/Shared/Download/bac-383-store-update.csv

有 Angular 的

  curl 'http://127.0.0.1:8000/api/stores/csv' 
  -H 'Origin: http://localhost:3000' 
  -H 'Accept-Encoding: gzip, deflate, br' 
  -H 'Accept-Language: en-US,en;q=0.9' 
  -H 'Authorization: Bearer ***
  -H 'Content-Type: application/x-www-form-urlencoded' 
  -H 'Accept: application/x.toters.v1+json' 
  -H 'Referer: http://localhost:3000/?local/' 
  -H 'User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.186 Safari/537.36' 
  -H 'Connection: keep-alive' 
  --data $'------WebKitFormBoundaryd405EnTxpFJv2GDN\r\nContent-Disposition: form-data; name="file"; filename="bac-383-store-update.csv"\r\nContent-Type: text/csv\r\n\r\n\r\n------WebKitFormBoundaryd405EnTxpFJv2GDN\r\nContent-Disposition: form-data; name="name"\r\n\r\nfile\r\n------WebKitFormBoundaryd405EnTxpFJv2GDN--\r\n' 
  --compressed

所以我仍然没有发送-F option

Answer 1

我之前没有接触过 restangular，但是在 Laravel 中，当你想从请求中获取文件时，你需要在请求对象上使用 file 方法:

$file = $request->file('file');

那应该给你一个 Illuminate\Http\UploadedFile

的实例