AngularJS向后端ASP.NET API控制器上传文件

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。


有用  |  无用 取消

猜你喜欢