我想知道如何在不使用外部库而只使用单个上传按钮的情况下使用angularjs上传文件? 我已经搜索了一段时间的解决方案,发现解决方案非常接近我想要的,如下所示:
<div ng-controller = "myCtrl">
<input type="file" file-model="myFile"/>
<button ng-click="uploadFile()">upload me</button>
</div>
var myApp = angular.module('myApp', []);
myApp.directive('fileModel', ['$parse', function ($parse) {
return {
restrict: 'A',
link: function(scope, element, attrs) {
var model = $parse(attrs.fileModel);
var modelSetter = model.assign;
element.bind('change', function(){
scope.$apply(function(){
modelSetter(scope, element[0].files[0]);
});
});
}
};
}]);
myApp.service('fileUpload', ['$http', function ($http) {
this.uploadFileToUrl = function(file, uploadUrl){
var fd = new FormData();
fd.append('file', file);
$http.post(uploadUrl, fd, {
transformRequest: angular.identity,
headers: {'Content-Type': undefined}
})
.success(function(){
})
.error(function(){
});
}
}]);
myApp.controller('myCtrl', ['$scope', 'fileUpload', function($scope, fileUpload){
$scope.uploadFile = function(){
var file = $scope.myFile;
console.log('file is ' );
console.dir(file);
var uploadUrl = "/fileUpload";
fileUpload.uploadFileToUrl(file, uploadUrl);
};
}]);
http://jsfiddle.net/JeJenny/ZG9re/
但是,我只想要一个上传按钮,在上面的例子中,我该如何触发uploadFile()?
答案 0 :(得分:1)
更新了您的小提琴:http://jsfiddle.net/ZG9re/7080/
<强> HTML 强>
<div ng-controller = "myCtrl">
<button>
<input type="file" class="input" id="myfile" file-model="myFile"><a href="">Upload Me</a>
</button>
</div>
<强> CSS 强>
#myfile {
opacity: 0;
position: absolute;
}
现在当你点击&#34;上传我&#34;你将获得文件浏览器。
<强>更新强>