随着HTML5的普及,现在大部分浏览器都支持拖拽功能,今天我们要说的就是实现一套拖拽上传的功能(Angularjs+nodejs)。
一、首先前端这款插件是基于AngularJS的,下面我们来看主要代码。
引入js:
<script src="js/angular.1.3.15.min.js"></script> <script src="js/ng-file-upload-shim.min.js"></script> <script src="js/ng-file-upload.min.js"></script>
html:
<div class="block__list block__list_words" ng-controller="UploadController"> <div ngf-drop ng-model="files" class="drop-box" ngf-drag-over-class="dragover" ngf-multiple="true" ngf-allow-dir="true" ngf-accept="‘.jpg,.png,.pdf,.html,.zip‘">//上传文件的格式 <div class="progressbar" ng-show="showProgress"> <div ng-repeat="file in files" class="uploadInfo"> <div class="fileName col-sm-5 col-xs-6">{{file.name}}</div> <div class="divProgressbar{{$index}} col-sm-5 col-xs-4"></div> <div class="col-sm-2 col-xs-2"> <i class="fa fa-trash fontIcon" ng-click="delFile($index)"></i> </div> </div> </div> <div ng-hide="showProgress"> <div class="import import1">You may also import your own translation</div> <div class="import import2">memories(TMX)</div> <div class="import import3">or</div> </div> <div class="btn addFiles" ngf-select ng-model="files"> <i class="fa fa-plus-circle"></i> Add files... </div> </div> <div ngf-no-file-drop>File Drag/Drop is not supported for this browser</div> Image thumbnail: <div ng-sortable="{ group: ‘foobar‘ }">//调整上传后图片顺序 <img ng-repeat="file in files" ngf-src="file"> </div> </div>
js:
(function () { ‘use strict‘; angular.module(‘todoApp‘, [‘ng-sortable‘,‘ngFileUpload‘]) .controller(‘UploadController‘, [‘$scope‘,‘Upload‘, function ($scope,Upload) { $scope.showProgress = false; $scope.$watch(‘files‘, function () { $scope.upload($scope.files); });//监听files有改变就上传 $scope.upload = function (files) { if (files && files.length) { for (var i = 0; i < files.length; i++) { var file = files[i]; (function(i){ return Upload.upload({ url: ‘/upload‘, fields: {‘username‘: $scope.username}, file: file }).progress(function (evt) { $scope.showProgress = true; var progressPercentage = parseInt(100.0 * evt.loaded / evt.total);//上传百分比 console.log(‘progress: ‘ + progressPercentage + ‘% ‘ + evt.config.file.name); }).success(function (data, status, headers, config) { $scope.showProgress = true; var url = data.url; $scope.files[i].url = url; console.log(‘file ‘ + config.file.name + ‘uploaded. Response: ‘, data); console.log("size:" + (config.file.size/1000).toFixed(2));//一个文件上传成功 }); })(i) } } }; }]) })();
二、然后是我们的后台代码:
1、app.js中设定上传文件缓存地址
var multiparty = require(‘connect-multiparty‘); var config = require(‘./config‘).config; app.use(multiparty({ uploadDir: path.join(config.upload_dir) }));
2、上传代码:
exports.uploadImage = function (req, res, next) { /*if (!req.session || !req.session.user) { res.send({ status: ‘forbidden‘ }); return; }*/ var file = req.files && req.files.file; if (!file) { res.send({ status: ‘failed‘, message: ‘no file‘ }); return; } //var uid = req.session.user._id.toString(); var uid = "stone"; var userDir = path.join(config.upload_dir, uid); ndir.mkdir(userDir, function (err) { if (err) { return next(err); } var filename = Date.now() + ‘_‘ + file.name; var savepath = path.resolve(path.join(userDir, filename)); if (savepath.indexOf(path.resolve(userDir)) !== 0) { return res.send({status: ‘forbidden‘}); } fs.rename(file.path, savepath, function (err) { if (err) { return next(err); } var url = ‘/upload/‘ + uid + ‘/‘ + encodeURIComponent(filename); res.send({ status: ‘success‘, url: url }); }); }); };
三、调节图片顺序
加入Sortable插件用来拖拽调整上传图片的先后位置
1、引入js:
<script src="Sortable.min.js"></script> <script src="ng-sortable.js"></script>
2、html代码:
Image thumbnail: <div ng-sortable="{ group: ‘foobar‘ }">//调整上传后图片顺序 <img ng-repeat="file in files" ngf-src="file"> </div>
最后,源码下载地址审核中……
时间: 2024-10-08 08:33:47