尝试使用 ng-file-upload 和多方上传文件来上传文件

Question

我正在尝试使用 ng-file-upload 和多方上传文件，但我不断收到 files.file undefined 错误，我不确定这个问题是ng-file-upload或者multiparty引起的，我在这上面花了将近20个小时.....

这是我的代码 users.client.view.html

<div class="modal-footer">
   <div class="btn-group">
       <label title="Upload" for="fileInput" class="btn btn-primary">
       <input type="file" accept="image/*" id="fileInput" class="hide">
       Upload new image
       </label>
   </div>
   <button  ng-click="uploadAvatar(croppedAvatarImage)" type="button" class="btn btn-primary">Save changes</button>
</div>

users.client.controller.js

$scope.uploadAvatar = function(image) {
    $scope.uploadInProgress = true;

    $scope.uploadProgress = 0;
        if (angular.isArray(image)) {
            image = image[0];
        }
        Upload.upload({
            url: '/api/v1/user/me/avatar',
            headers: {
                'Content-Type': 'multipart/form-data'
            },
            method: 'POST',
            data: {
                file: image
            }
        }).success(function(data, status, headers, config) {
            console.log("upload success!");
            $scope.$apply();
        }).error(function(err) {
            $scope.uploadInProgress = false;
            console.log("upload failed!");
    });
};

users.profile.server.controller.js

exports.uploadAvatar = function(req, res) {
    var form = new multiparty.Form();
    form.parse(req, function(err, fields, files) {

        Object.keys(files).forEach(function(name) {
            console.log('got file named ' + name);
        });

        console.log(files, files.file);

        var file = files.file[0]; // HERE THE PROGRAM CRASHED BY THE ERROR "Cannot read property '0' of undefined"
        var contentType = file.headers['content-type'];
        var extension = file.path.substring(file.path.lastIndexOf('.'));
        var destPath = '/' + user.id + '/profile' + '/' + uuid.v4() + extension;

        var headers = {
            'x-amz-acl': 'public-read',
            'Content-Length': file.size,
            'Content-Type': contentType
        };
        var uploader = s3Client.upload(file.path, destPath, headers);

        uploader.on('error', function(err) {
            res.status(500).send(err);
            //TODO handle this
        });

        uploader.on('end', function(url) {
            //TODO do something with the url
            console.log('file opened:', url);
        });
    });
};

Answer 1

files 是一个对象，其中属性名称是字段名称，值是文件对象数组。因此，您尝试将名称添加到字段并使用它来获取文件数组。

在users.client.view.html中添加名称属性：

<input type="file" accept="image/*" id="fileInput" name="fileInput" class="hide">

在users.profile.server.controller.js中：

更改以下代码

var file = files.file[0];

到

var file = files.fileInput[0];

Answer 2

好吧我终于想通了，我其实是想上传一个Base64的文件，因为我得到的img是ngCrop的，是一个Base64的字符串，所以在[=12中肯定找不到=]文件字段.

尝试使用 ng-file-upload 和多方上传文件来上传文件

Trying to upload file by using ng-file-upload and multiparty to upload files

javascript

file-upload

node.js

angularjs

mean-stack