Restangular不会改变Http Content-Type

Question

为了将文件作为表单的一部分发送,我将内容类型更改为"multipart/form-data",但是当我检查控制台时,它仍然使用application/json; charset = utf-8和Node.js(与Sails.js框架)打印错误,说它是无效的JSON.

这是代码:

$rootScope.objects.user.withHttpConfig({
    transformRequest: angular.identity
}).customPUT($scope.objects.user, "", { // user object contains a file
    'Content-Type': "multipart/form-data" // should change content-type. I've tried using `undefined` as well
}).then(function(resp) {
    if (resp == "OK") {
        $scope.successes = [{
            msg: "Saved"
        }];
    }
}, function(err) {
    console.log(err);
    $scope.errors = err.data.errors;
});

Google Chrome中的"检查网络请求"标签显示:

User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:30.0) Gecko/20100101 Firefox/30.0
Referer:    http://localhost:1337/user/settings
Host:   localhost:1337
DNT:    1
Content-Type:   application/json;charset=utf-8
Content-Length: 505679
Connection: keep-alive
Accept-Language:    en-US,en;q=0.5
Accept-Encoding:    gzip, deflate
Accept: application/json, text/plain, */*

Answer 1

正如上面的评论和根据文档所述，您应该将标头作为第四个参数传递。所以你的代码应该是

    $rootScope.objects.user.withHttpConfig({
        transformRequest: angular.identity
    }).customPUT(
         $scope.objects.user,
          undefined,
          undefined, 
         {
             'Content-Type': "multipart/form-data"
         }
   ).then(function(resp) {
        if (resp == "OK") {
            $scope.successes = [{
                msg: "Saved"
            }];
        }
    }, function(err) {
        console.log(err);
        $scope.errors = err.data.errors;
    });

参考网址： https: //github.com/mgonto/restangular#custom-methods