angular上传图片插件

1.安装插件

### Bower
```
bower install angular-file-upload

### NPM
```
npm install angular-file-upload

2.插件使用

（1）html文件

<div class="ibox-content" ng-controller="uploadController">
    <div class="row m-t imageFile">
        <form class="form-horizontal" name="form">
            <div class="form-line" style="margin-bottom: 15px;">
                <label>请选择图片：</label><span class="small-tip"></span>
                <button class="btn btn-w-m btn-info" type="button"
                        style="margin-left: 150px;margin-bottom: 15px;"
                        ng-click="UploadFile('banner-upload')">点击上传图片
                </button>
                <div class="choose-file-area">
                    <input class="file-name" type="text" readonly="readonly"
                           ng-model="fileItem.name"/>
                    <a href="javascript:;" class="choose-book">
                        <input type="file" name="certificate" nv-file-select
                               uploader="uploader" ng-click="clearItems()"/>浏览
                    </a>
                </div>
            </div>
            <div class="col-md-6">
                <img class="display-image" ng-if="image" ng-src="{{image}}" alt="">
            </div>
        </form>
    </div>
</div>

（2）通用js文件

选择图片后的一些函数处理及回调函数

angular.module('myApp.controllers')
    .controller('uploadController',['$scope','ApiConfig','FileUploader','$timeout','$rootScope','notify',function ($scope,ApiConfig,FileUploader,$timeout,$rootScope,notify) {
        var serverUrl = ApiConfig.API_HOST + "/admin/users/upload_avatar";

        //定义两个上传后返回的状态，成功或失败
        $scope.uploadStatus = false;

        $scope.broadcastName = '';


        var uploader = $scope.uploader = new FileUploader({
            url: serverUrl,queueLimit: 1,//文件个数
            removeAfterUpload: true   //上传后删除文件

        });


        $scope.clearItems = function () {    //重新选择文件时，清空队列，达到覆盖文件的效果
            uploader.clearQueue();
        };


        // uploader.onAfterAddingFile = function (fileItem) {
        //     $scope.fileItem = fileItem._file;    //添加文件之后，把文件信息赋给scope
        //     //能够在这里判断添加的文件名后缀和文件大小是否满足需求。
        //     console.info('onAfterAddingFile',fileItem);
        // };


        uploader.onAfterAddingFile = function (fileItem) {
            $scope.fileItem = fileItem._file;    //添加文件之后，把文件信息赋给scope

            // console.info('onAfterAddingFile',fileItem);

            var fileReader = new FileReader();
            fileReader.readAsDataURL(fileItem._file);

            var loadFile = function (fileReader,index) {
                fileReader.onload = function (e) {
                    $timeout(function () {
                        $scope.image = e.target.result;


                    });
                };

            }(fileReader);
        };


        uploader.onSuccessItem = function (fileItem,response,status,headers) {

            $scope.uploadStatus = true;   //上传成功则把状态改为true

            if (response.data.Location) {

                $rootScope.$broadcast($scope.broadcastName,{
                    imgUrl: response.data.Location
                });

            }

            notify({
                message: response.status.message,position: $rootScope.globalData.notify_position,duration: $rootScope.globalData.notify_duration
            });

        };


        $scope.UploadFile = function (broadcastName) {
            uploader.uploadAll();
            $scope.broadcastName = broadcastName;
        }


    }]);

(3)与html对应的controller文件

接收上传图片成功后发出的广播，并将相应变量进行赋值。

$rootScope.$on('banner-upload',function (event,option) {
    console.log('banner-upload');
    $scope.data.bannerDetail.banner_url_big = option.imgUrl;
});