将文件阅读器数据传递到Angular Js中的服务 [英] Pass file reader data to service in Angular Js
本文介绍了将文件阅读器数据传递到Angular Js中的服务的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我正在使用文件读取器来获取文件上传的数据.我能够在controller.js中获取数据,但无法将其传递给API服务.数据始终作为空传递.我已经更新了如下代码:
I am using file reader to fetch the data of file upload. I am able to get the data in controller.js, but not able to pass it to the API service. The data is always passed as empty. I have updated the code as below:
//index.cshtml
//index.cshtml
<input type="file" my-files="files" />
<input type="button" name="imageUploadButton" ng-click="uploadFiles()" value="Upload" />
//controller.js
// controller.js
angular.module('myApp.controllers', []).
controller('AppController', function($scope, testAPIService, Excel, $timeout, $window, $location, $anchorScroll,$http) {
var url = "server/UploadImage/";
var config = {
headers: {
"Content-Type": undefined,
}
};
$scope.uploadFiles = function () {
var file = $scope.files[0];
$http.post(url, file, config).then(function (response) {
$scope.result = "SUCCESS";
$scope.data = response.data.data;
}).catch(function (response) {
alert( "ERROR " + response.status);
});
};
});
angular.module("myApp.controllers").directive("myFiles", function ($parse) {
return function linkFn(scope, elem, attrs) {
elem.on("change", function (e) {
scope.$eval(attrs.myFiles + "=$files", { $files: e.target.files });
scope.$apply();
console.log(scope);
});
};
});
angular.module("myApp.controllers").directive("xdHref", function () {
return function linkFn(scope, elem, attrs) {
scope.$watch(attrs.xdHref, function (newVal) {
newVal && elem.attr("href", newVal);
});
};
});
当被选择的文件,MYFILES"指令被调用,且i可以在控制台看到的数据.当我单击上传"按钮时,以下一行显示为错误
When the file is selected, "myFiles" directive is invoked, and i can see the data in console. When i click on the upload button, the below line is coming as error
var file = $scope.files[0];
如何解决此问题? 谢谢
How to fix this? Thanks
推荐答案
使用AngularJS上载文件
vm.upload = function() {
$http.post(url, vm.files[0], config).
then(function(response) {
vm.result = "SUCCESS";
}).catch(function(response) {
vm.result = "ERROR "+response.status;
});
};
HTML
<input type=file my-files="files" /><br>
<button ng-click="upload()">Upload</button><br>
my-files
指令
my-files
Directive
app.directive("myFiles", function($parse) {
return function linkFn (scope, elem, attrs) {
elem.on("change", function (e) {
scope.$eval(attrs.myFiles + "=$files", {$files: e.target.files});
scope.$apply();
});
};
});
这篇关于将文件阅读器数据传递到Angular Js中的服务的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
查看全文