我能够通过使用下面的代码使用AngularJS上传文件:

函数ngUploadFileUpload需要传递的参数的文件是$scope。按你的问题归档。

这里的关键点是使用transformRequest:[]。这将防止$http与文件内容混淆。

       function getFileBuffer(file) {
            var deferred = new $q.defer();
            var reader = new FileReader();
            reader.onloadend = function (e) {
                deferred.resolve(e.target.result);
            }
            reader.onerror = function (e) {
                deferred.reject(e.target.error);
            }

            reader.readAsArrayBuffer(file);
            return deferred.promise;
        }

        function ngUploadFileUpload(endPointUrl, file) {

            var deferred = new $q.defer();
            getFileBuffer(file).then(function (arrayBuffer) {

                $http({
                    method: 'POST',
                    url: endPointUrl,
                    headers: {
                        "accept": "application/json;odata=verbose",
                        'X-RequestDigest': spContext.securityValidation,
                        "content-length": arrayBuffer.byteLength
                    },
                    data: arrayBuffer,
                    transformRequest: []
                }).then(function (data) {
                    deferred.resolve(data);
                }, function (error) {
                    deferred.reject(error);
                    console.error("Error", error)
                });
            }, function (error) {
                console.error("Error", error)
            });

            return deferred.promise;

        }

您可以考虑使用IaaS进行文件上传，例如Uploadcare。有一个针对它的Angular包:https://github.com/uploadcare/angular-uploadcare

从技术上讲，它被实现为一个指令，提供了不同的上传选项，以及小部件中上传图像的操作:

<uploadcare-widget
  ng-model="object.image.info.uuid"
  data-public-key="YOURKEYHERE"
  data-locale="en"
  data-tabs="file url"
  data-images-only="true"
  data-path-value="true"
  data-preview-step="true"
  data-clearable="true"
  data-multiple="false"
  data-crop="400:200"
  on-upload-complete="onUCUploadComplete(info)"
  on-widget-ready="onUCWidgetReady(widget)"
  value="{{ object.image.info.cdnUrl }}"
 />

更多配置选项:https://uploadcare.com/widget/configure/

最简单的是使用HTML5 API，即FileReader

HTML非常简单:

<input type="file" id="file" name="file"/>
<button ng-click="add()">Add</button>

在你的控制器中定义'add'方法:

$scope.add = function() {
    var f = document.getElementById('file').files[0],
        r = new FileReader();

    r.onloadend = function(e) {
      var data = e.target.result;
      //send your binary data via $http or $resource or do anything else with it
    }

    r.readAsBinaryString(f);
}

浏览器兼容性

桌面浏览器

Edge 12, Firefox(Gecko) 3.6(1.9.2)， Chrome 7, Opera* 12.02, Safari 6.0.2

移动浏览器

Firefox(壁虎)32, Chrome 3, 歌剧* 11.5, Safari 6.1

注意:readAsBinaryString()方法已弃用，应该使用readAsArrayBuffer()代替。

简单的指令

Html:

<input type="file" file-upload multiple/>

JS:

app.directive('fileUpload', function () {
return {
    scope: true,        //create a new scope
    link: function (scope, el, attrs) {
        el.bind('change', function (event) {
            var files = event.target.files;
            //iterate files since 'multiple' may be specified on the element
            for (var i = 0;i<files.length;i++) {
                //emit event upward
                scope.$emit("fileSelected", { file: files[i] });
            }                                       
        });
    }
};

在指令中，我们确保创建了一个新的作用域，然后监听对文件输入元素所做的更改。当检测到更改时，以文件对象作为参数向所有祖先作用域(向上)发出事件。

在你的控制器中:

$scope.files = [];

//listen for the file selected event
$scope.$on("fileSelected", function (event, args) {
    $scope.$apply(function () {            
        //add the file object to the scope's files collection
        $scope.files.push(args.file);
    });
});

然后在ajax调用中:

data: { model: $scope.model, files: $scope.files }

http://shazwazza.com/post/uploading-files-and-json-data-in-the-same-request-with-angular-js/

我想这是angular文件的上传:

ng-file-upload

用来上传文件的轻量级Angular JS指令。

这里是演示页面。特性

Supports upload progress, cancel/abort upload while in progress, File drag and drop (html5), Directory drag and drop (webkit), CORS, PUT(html5)/POST methods, validation of file type and size, show preview of selected images/audio/videos. Cross browser file upload and FileReader (HTML5 and non-HTML5) with Flash polyfill FileAPI. Allows client side validation/modification before uploading the file Direct upload to db services CouchDB, imgur, etc... with file's content type using Upload.http(). This enables progress event for angular http POST/PUT requests. Seperate shim file, FileAPI files are loaded on demand for non-HTML5 code meaning no extra load/code if you just need HTML5 support. Lightweight using regular $http to upload (with shim for non-HTML5 browsers) so all angular $http features are available

https://github.com/danialfarid/ng-file-upload

这里的一些答案建议使用FormData()，但不幸的是，这是一个浏览器对象，在Internet Explorer 9及以下版本中不可用。如果您需要支持这些旧浏览器，您将需要一个备份策略，例如使用<iframe>或Flash。

已经有很多Angular.js模块来执行文件上传。这两种浏览器都明确支持旧浏览器:

https://github.com/leon/angular-upload -使用iframes作为备份 https://github.com/danialfarid/ng-file-upload -使用FileAPI/Flash作为备份

还有一些其他的选择:

https://github.com/nervgh/angular-file-upload/ https://github.com/uor/angular-file https://github.com/twilson63/ngUpload https://github.com/uploadcare/angular-uploadcare

其中一个应该适合你的项目，或者可能会给你一些关于如何自己编写代码的见解。