本文实例介绍了前端AngularJS向后端ASP.NET Web API上传文件的实现方法，具体内容如下
首先服务端：
public class FilesController : ApiController{ //using System.Web.Http [HttpPost] public async Task<HttpResponseMessage> Upload() { if(!Request.Content.IsMimeMultipartContent()) { this.Request.CreateResponse(HttpStatusCode.UnsuportedMediaType); } var provider = GetMultipartProvider(); var result = await Request.Content.ReadAsMultipartAsync(provider); //文件名类似"BodyPart_26d6abe1-3ae1-416a-9429-b35f15e6e5d5"这样的格式 var originalFileName = GetDeserializedFileName(result.FileData.First()); var uploadFileInfo = new FileInfo(result.FileData.First().LocalFileName); //如果前端无表单数据，这里注销 var filleUploadObj = GetFormData<UploadDataModel>(result); var returnData = "ReturnTest"; return this.Request.CreateResponse(HttpStatusCode.OK, new {returnData}); } private MultipartFormDataStreamProvider GetMultipartProvider() { //图片的上传路径 var uploadFolder = "~/App_Data/FileUploads"; //获取根路径 var root = HttpContext.Current.Server.MapPath(uploadFolder); //创建文件夹 Directory.CreateDirectory(root); return new MultipartFormDataStreamProvider(root); } //从Provider中获取表单数据 private object GetFormData<T>(MultipartFormDataStreamProvider result) { if(result.FormData.HasKeys()) { var unescapedFormData = Uri.UnescapeDataString(result.FormData.GetValues(0).FirstOrDefault() ?? String.Empty); if(!String.IsNullOrEmpty(unescapedFormData)) { return JsonConvert.DeserializeObject<T>(upescapedFormData); } } return null; } //获取反序列化文件名 private string GetDeserializedFileName(MultipartFileData fileData) { var fileName = GetFileName(fileData); return JsonConvert.DeserializedObject(fileName).ToString(); } //获取文件名 public string GetFileName(MultipartFileData fileData) { return fileData.Headers.ContentDisposition.FileName; }}
UploadDataModel.cs
public class UploadDataModel{ public string testString1{get;set;} public string testString2{get;set;}}
客户端主页面：
index.html
<div ng-include="'upload.html'"></div>
引用：
- angular-file-upload-shim.js
- angular.js
- angular-file-upload.js
- angular-cookies.js
- angular-resource.js
- angular-sanitize.js
- angular-route.js
- app.js
- upload.js
upload.html部分视图页用来接受文件。
upload.html
<div ng-controller="UploadCtrl" <input type="file" ng-file-select="onFileSelect($files)" multiple></div>
app.js模块依赖和全局配置。
app.js
'use strict'angular.module('angularUploadApp',[ 'ngCookies', 'ngResource', 'ngSanitize', 'ngRoute', 'angularFileUpload']).config(function($routeProvider){ $routeProvider .when('/', { templateUrl: 'upload.html', controller: 'UploadCtrl' }) .otherwise({ resirectTo: '/' })})
控制器提供上传和取消上传的方法。
upload.js
'use strict';angular.module('angularUploadApp') .controller('UploadCtrl', function($scope, $http, $timeout, $upload){ $scope.upload = []; $scope.fileUploadObj = {testString1: "Test ring 1", testString2: "Test string 2"}; $scope.onFileSelect = function ($files) { //$files: an array of files selected, each file has name, size, and type. for (var i = 0; i < $files.length; i++) { var $file = $files[i]; (function (index) { $scope.upload[index] = $upload.upload({ url: "./api/files/upload", // webapi url method: "POST", data: { fileUploadObj: $scope.fileUploadObj }, file: $file }).progress(function (evt) { // get upload percentage console.log('percent: ' + parseInt(100.0 * evt.loaded / evt.total)); }).success(function (data, status, headers, config) { // file is uploaded successfully console.log(data); }).error(function (data, status, headers, config) { // file failed to upload console.log(data); }); })(i); } } $scope.abortUpload = function (index) { $scope.upload[index].abort(); } })
以上就是前端AngularJS向后端ASP.NET Web API上传文件的实现方法，希望对大家的学习有所帮助。
