angularJs多文件上传

<input type="file" id="file{{$index}}" class="file{{$index}}" ngf-select ngf-change="cacScriptEditVm.views.uploadAttach($files)" multiple/>

<div class="form-group" ng-repeat="item in cacScriptEditVm.views.files track by $index">
    <label class="col-sm-4">
        {{item.name}}
    </label>

</div>

vm.views.files = [];

function uploadAttach($file) {

            vm.views.files = $file;

　　　　　　　if($file.length>1){
                for(var i=0;i<$file.length;i++){
                    console.log($file[i]);
                }
            }
　　　　　　　　

　　　　addAttachment(0,$file);

}

function addAttachment(taskId, file) {
    var deferred = $q.defer();//声明承诺
    Upload
        .upload({
            url: _appconfig.apiBaseUrls.tm + '/api/tm/task/attachment?taskId=' + taskId,
            fields: {},
            file: file
        })
        .progress(function (evt) {
            var progressPercentage = parseInt(100.0 * evt.loaded / evt.total);
            // console.log('progress: ' + progressPercentage + '% ' + evt.config.file.name);
        })
        .success(function (data, status, headers, config) {
            // console.log('file ' + config.file.name + 'uploaded. Response: ' + data);
            deferred.resolve(data);//请求成功
        })
        .error(function (data, status, headers, config) {
            // console.log('error status: ' + status);
            deferred.reject(data);//请求成功
        });

    return deferred.promise;   // 返回承诺
}