这是我的HTML表单:
<form name="myForm" ng-submit="">
<input ng-model='file' type="file"/>
<input type="submit" value='Submit'/>
</form>
我想从本地机器上传一个图像，并想读取上传文件的内容。所有这些我都想用AngularJS来做。
当我试图打印$scope的值时。文件是未定义的。
当前回答
以上接受的答案不兼容浏览器。如果有人有兼容性问题，试试这个。
小提琴
视图代码
<div ng-controller="MyCtrl">
<input type="file" id="file" name="file"/>
<br>
<button ng-click="add()">Add</button>
<p>{{data}}</p>
</div>
控制器代码
var myApp = angular.module('myApp',[]);
function MyCtrl($scope) {
$scope.data = 'none';
$scope.add = function(){
var f = document.getElementById('file').files[0],
r = new FileReader();
r.onloadend = function(e){
var binary = "";
var bytes = new Uint8Array(e.target.result);
var length = bytes.byteLength;
for (var i = 0; i < length; i++)
{
binary += String.fromCharCode(bytes[i]);
}
$scope.data = (binary).toString();
alert($scope.data);
}
r.readAsArrayBuffer(f);
}
}
其他回答
该代码将帮助插入文件
<body ng-app = "myApp">
<form ng-controller="insert_Ctrl" method="post" action="" name="myForm" enctype="multipart/form-data" novalidate>
<div>
<p><input type="file" ng-model="myFile" class="form-control" onchange="angular.element(this).scope().uploadedFile(this)">
<span style="color:red" ng-show="(myForm.myFile.$error.required&&myForm.myFile.$touched)">Select Picture</span>
</p>
</div>
<div>
<input type="button" name="submit" ng-click="uploadFile()" class="btn-primary" ng-disabled="myForm.myFile.$invalid" value="insert">
</div>
</form>
<script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular.min.js"></script>
<script src="insert.js"></script>
</body>
insert.js
var app = angular.module('myApp',[]);
app.service('uploadFile', ['$http','$window', function ($http,$window) {
this.uploadFiletoServer = function(file,uploadUrl){
var fd = new FormData();
fd.append('file', file);
$http.post(uploadUrl, fd, {
transformRequest: angular.identity,
headers: {'Content-Type': undefined}
})
.success(function(data){
alert("insert successfull");
$window.location.href = ' ';//your window location
})
.error(function(){
alert("Error");
});
}
}]);
app.controller('insert_Ctrl', ['$scope', 'uploadFile', function($scope, uploadFile){
$scope.uploadFile = function() {
$scope.myFile = $scope.files[0];
var file = $scope.myFile;
var url = "save_data.php";
uploadFile.uploadFiletoServer(file,url);
};
$scope.uploadedFile = function(element) {
var reader = new FileReader();
reader.onload = function(event) {
$scope.$apply(function($scope) {
$scope.files = element.files;
$scope.src = event.target.result
});
}
reader.readAsDataURL(element.files[0]);
}
}]);
save_data.php
<?php
require "dbconnection.php";
$ext = pathinfo($_FILES['file']['name'],PATHINFO_EXTENSION);
$image = time().'.'.$ext;
move_uploaded_file($_FILES["file"]["tmp_name"],"upload/".$image);
$query="insert into test_table values ('null','$image')";
mysqli_query($con,$query);
?>
我们使用了HTML, CSS和AngularJS。下面的例子展示了如何使用AngularJS上传文件。
<html>
<head>
<script src = "https://ajax.googleapis.com/ajax/libs/angularjs/1.3.14/angular.min.js"></script>
</head>
<body ng-app = "myApp">
<div ng-controller = "myCtrl">
<input type = "file" file-model = "myFile"/>
<button ng-click = "uploadFile()">upload me</button>
</div>
<script>
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);
};
}]);
</script>
</body>
</html>
简单地说
在Html中-只添加以下代码
<form name="upload" class="form" data-ng-submit="addFile()">
<input type="file" name="file" multiple
onchange="angular.element(this).scope().uploadedFile(this)" />
<button type="submit">Upload </button>
</form>
当你点击“上传文件按钮”时，这个函数被调用。它将上传文件。你可以安慰它。
$scope.uploadedFile = function(element) {
$scope.$apply(function($scope) {
$scope.files = element.files;
});
}
在控制器中添加更多-以下代码添加到函数中。这个函数在你点击按钮时被调用，这个按钮被用来“命中api (POST)”。它将发送文件(上传)和表单数据到后端。
var url = httpURL + "/reporttojson"
var files=$scope.files;
for ( var i = 0; i < files.length; i++)
{
var fd = new FormData();
angular.forEach(files,function(file){
fd.append('file',file);
});
var data ={
msg : message,
sub : sub,
sendMail: sendMail,
selectUsersAcknowledge:false
};
fd.append("data", JSON.stringify(data));
$http.post(url, fd, {
withCredentials : false,
headers : {
'Content-Type' : undefined
},
transformRequest : angular.identity
}).success(function(data)
{
toastr.success("Notification sent successfully","",{timeOut: 2000});
$scope.removereport()
$timeout(function() {
location.reload();
}, 1000);
}).error(function(data)
{
toastr.success("Error in Sending Notification","",{timeOut: 2000});
$scope.removereport()
});
}
在这种情况下…我添加了下面的代码作为表单数据
var data ={
msg : message,
sub : sub,
sendMail: sendMail,
selectUsersAcknowledge:false
};
使用简单指令的示例(ng-file-model):
.directive("ngFileModel", [function () {
return {
$scope: {
ngFileModel: "="
},
link: function ($scope:any, element, attributes) {
element.bind("change", function (changeEvent:any) {
var reader = new FileReader();
reader.onload = function (loadEvent) {
$scope.$apply(function () {
$scope.ngFileModel = {
lastModified: changeEvent.target.files[0].lastModified,
lastModifiedDate: changeEvent.target.files[0].lastModifiedDate,
name: changeEvent.target.files[0].name,
size: changeEvent.target.files[0].size,
type: changeEvent.target.files[0].type,
data: changeEvent.target.files[0]
};
});
}
reader.readAsDataURL(changeEvent.target.files[0]);
});
}
}
}])
并使用FormData在函数中上传文件。
var formData = new FormData();
formData.append("document", $scope.ngFileModel.data)
formData.append("user_id", $scope.userId)
所有学分都归 https://github.com/mistralworks/ng-file-model
我遇到了一个小问题，你可以在这里查看: https://github.com/mistralworks/ng-file-model/issues/7
最后，这里是一个分叉的回购:https://github.com/okasha93/ng-file-model/blob/patch-1/ng-file-model.js
上传文件
<input type="file" name="resume" onchange="angular.element(this).scope().uploadResume()" ng-model="fileupload" id="resume" />
$scope.uploadResume = function () {
var f = document.getElementById('resume').files[0];
$scope.selectedResumeName = f.name;
$scope.selectedResumeType = f.type;
r = new FileReader();
r.onloadend = function (e) {
$scope.data = e.target.result;
}
r.readAsDataURL(f);
};
下载文件:
<a href="{{applicant.resume}}" download> download resume</a>
var app = angular.module("myApp", []);
app.config(['$compileProvider', function ($compileProvider) {
$compileProvider.aHrefSanitizationWhitelist(/^\s*(https?|local|data|chrome-extension):/);
$compileProvider.imgSrcSanitizationWhitelist(/^\s*(https?|local|data|chrome-extension):/);
}]);
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