How to send form data to a Spring controller using ajax - javascript

I have a Sudoku board generated with thymeleaf and I want to send all the tile values as a double array to a Spring controller or as a String.
<form class="box" id="sudokuBoard">
<table>
<tr th:each="row: ${board}">
<td th:each="value: ${row}">
<div th:switch="${value}">
<input th:case="0" style="width:30px;height:30px;text-align:center" type = "text" maxlength="1" value="0">
<input th:case="*" style="width:30px;height:30px;text-align:center;background-color:lightgreen" type = "text" th:value="${value}" readonly>
</div>
</td>
</tr>
</table>
<input type="submit"> Check Solution </input>
</form>
I've tried to use the serialize() function but it doesn't send anything or I'm doing something wrong.
<script>
$("#sudokuBoard").submit(function(e) {
e.preventDefault(); // avoid to execute the actual submit of the form.
var form = $(this);
$.ajax({
type: "POST",
url: "/sudoku",
dataType: 'json',
data: form.serialize(),
success: function(msg)
{
console.log("data sent");
}
});
});
</script>
This is the Spring controller
#RequestMapping(value = "/sudoku", method = RequestMethod.POST, consumes = MediaType.APPLICATION_JSON_VALUE)
String checkBoardStatus(#RequestBody String jsonString){
System.out.println("json string: " + jsonString);
return "sudoku";
}

You can use this example, where success will be your callback method
$.ajax({
type: "POST",
url: url,
data: data,
success: function(result) {},
dataType: dataType
});

#RequestMapping(value = "/sudoku", method = RequestMethod.POST)
String checkBoardStatus(Map<String,Object> params){
System.out.println("Request Params: " + params);
return "sudoku";
}
User above code.. Try to use a DTO class to map request body instead of Map and do not use #RequestBody annotation

Related

Why is my ajax not passing in my parameter (always empty) via POST in Razor Page application?

I need this ajax call to run my onpost handler PassPart. It successfully calls it, but my parameter "searchedpart" is always empty. I've also tried passing the parameter directly in my url, like: "?handler=passPart" + "&searchedpart=" + searchedpart , but it's still empty. Lastly, I've tried using "Request.Form[SearchedPart]" in my method to pull the value in, also empty. I've tested that this element is not empty by adding an alert message to my js to confirm, and I see the value being found.
ps. I'm using an EmptyResult because I don't need anything posted back. I simply need it to run through my handler using the parameter.
<form method="post">
<input class="form-control" name="searchedpart" asp-for="PostData.SearchedPart" value="#Model.PostData.SearchedPart" id="searchedpart" />
<button type="submit" id="searchpartbtn" class="btn btn-success btn-sm">Find</button>
</form>
document.getElementById('searchpartbtn').addEventListener('click', PassPart);
var searchedpart = document.getElementById('searchedpart').value;
function PassPart() {
$.ajax({
type: "POST",
url: "?handler=passPart",
dataType: "json",
data: JSON.stringify({ searchedpart: searchedpart }),
beforeSend: function (xhr) {
xhr.setRequestHeader("RequestVerificationToken",
$('input:hidden[name="__RequestVerificationToken"]').val());
}
});
}
public ActionResult OnPostPassPart(string searchedpart = "")
{
if (searchedpart != "") {
// Do Things
}
return new EmptyResult();
}
Because searchedpart is already a string type, there is no need to JSON.stringify.And you should write your var searchedpart = document.getElementById('searchedpart').value;code inside your function.
Just change your code as below:
document.getElementById('searchpartbtn').addEventListener('click', PassPart);
function PassPart() {
var searchedpart = document.getElementById('searchedpart').value;
$.ajax({
type: "POST",
url: "?handler=PassPart",
dataType: "json",
data: { "searchedpart": searchedpart },
beforeSend: function (xhr) {
xhr.setRequestHeader("RequestVerificationToken",
$('input:hidden[name="__RequestVerificationToken"]').val());
}
});
}
In your background:
public ActionResult OnPostPassPart(string searchedpart)
{
//...
}
Result:
I ended up using the following in my method to get this working:
string part = Request.Form["SearchedPart"];
remove dataType: "json"
Add header token

how to passing datepicker value to controller?

i new to use laravel framework,,
i want to passing datepicker value after user select the date
i try to give button, to submit that value, but i got error.
Anybody have idea to passing value without button ?
this is my blade :
<form id="myform" name="myform">
<input type="text" id="datepicker" name="datepicker" value="Date"/>
<input placeholder="Submit" type="button" id="submitMe" style="width:
100px;"/>
//can i passing this value without button?
<script>
$('#datepicker').datepicker({
format : 'yyyy-mm-dd'
});
</script>
</form>
<script>
$("#submitMe").click(function() {
$.ajax({
type: 'POST',
url: "/index/getDate",
method: "POST",
dataType: "json",
data: $('#myform').serialize(),
success: function(data) {
console.log("Done");
}
});
return false;
})
</script>
this is my route :
Route::post('index/getDate', 'UserController#getDate')-
>name('Usercontroller.getDate');
this is my controller :
function getDate(Request $request){
$date = urldecode ($_GET['datepicker']);
echo "chosen date is: ".$date;
}
i try to get output like this :
thankyou so much, if somebody want to help me :))
try this in your controller:
function getDate(Request $request){
$date = $request->datepicker;
return "chosen date is: ".$date;
}
then in your view:
<input type="text" id="datepicker" name="datepicker" value="Date"/>
<label id="dateSelected"></label>
<script>
$("#submitMe").click(function() {
$.ajax({
type: 'POST',
url: "/index/getDate",
method: "POST",
data: $('#myform').serialize(),
success: function(data) {
console.log(data);
$('#dateSelected').text(data);
}
});
return false;
})
</script>
you pass the form data with POST method, so you can get the parameter with
$request->input('datepicker');

How to pass Image from jsp to controller in Spring MVC

Send Image file from html to controller page in Spring MVC
File to upload: <input type="file" name="UploadFile" id="file"><br>
<input type="submit" value="Upload" onclick="sortByDateeeee()">
Get this image file in javascript and passed to controller.
function sortByDateeeee(){
var request = document.getElementById("file").value;
var url=CONTEXT_ROOT+"/login/uploadFile";
$.ajax({
type: "POST",
url: url,
data:{
"request": request
},
success: function(response){
//alert(response);
}
});
}
Following controller
#ResponseBody
#RequestMapping(value="/uploadFile", method=RequestMethod.POST)
#HttpMethodConstraint(value = "POST")
public String uploadFileHandler(#RequestParam(required=false) HttpServletRequest request)
System.out.println("request: "+request);
}
My problem is unable to call controller.. please help me to get out of this.
<input type="file" name="file" />
<script type="text/javascript">
function sortByDateeeee() {
var formData = new FormData();
formData.append('file', $('input[type=file]')[0].files[0]);
console.log("form data " + formData);
$.ajax({
url : 'login/uploadFile',
data : formData,
processData : false,
contentType : false,
type : 'POST',
success : function(data) {
alert(data);
},
error : function(err) {
alert(err);
}
});
}
</script>
and in your controller
#RequestMapping(method = RequestMethod.POST)
public #ResponseBody String doUpload(#RequestParam("file") MultipartFile multipartFile) {
return "Uploaded: " + multipartFile.getSize() + " bytes";
}
I think the url will be only
var url="uploadFile";
. You may not need to add rest of the things

XMLHTTPREQUEST send file and parameters [duplicate]

I'm using jQuery and Ajax for my forms to submit data and files but I'm not sure how to send both data and files in one form?
I currently do almost the same with both methods but the way in which the data is gathered into an array is different, the data uses .serialize(); but the files use = new FormData($(this)[0]);
Is it possible to combine both methods to be able to upload files and data in one form through Ajax?
Data jQuery, Ajax and html
$("form#data").submit(function(){
var formData = $(this).serialize();
$.ajax({
url: window.location.pathname,
type: 'POST',
data: formData,
async: false,
success: function (data) {
alert(data)
},
cache: false,
contentType: false,
processData: false
});
return false;
});
<form id="data" method="post">
<input type="text" name="first" value="Bob" />
<input type="text" name="middle" value="James" />
<input type="text" name="last" value="Smith" />
<button>Submit</button>
</form>
Files jQuery, Ajax and html
$("form#files").submit(function(){
var formData = new FormData($(this)[0]);
$.ajax({
url: window.location.pathname,
type: 'POST',
data: formData,
async: false,
success: function (data) {
alert(data)
},
cache: false,
contentType: false,
processData: false
});
return false;
});
<form id="files" method="post" enctype="multipart/form-data">
<input name="image" type="file" />
<button>Submit</button>
</form>
How can I combine the above so that I can send data and files in one form via Ajax?
My aim is to be able to send all of this form in one post with Ajax, is it possible?
<form id="datafiles" method="post" enctype="multipart/form-data">
<input type="text" name="first" value="Bob" />
<input type="text" name="middle" value="James" />
<input type="text" name="last" value="Smith" />
<input name="image" type="file" />
<button>Submit</button>
</form>
The problem I had was using the wrong jQuery identifier.
You can upload data and files with one form using ajax.
PHP + HTML
<?php
print_r($_POST);
print_r($_FILES);
?>
<form id="data" method="post" enctype="multipart/form-data">
<input type="text" name="first" value="Bob" />
<input type="text" name="middle" value="James" />
<input type="text" name="last" value="Smith" />
<input name="image" type="file" />
<button>Submit</button>
</form>
jQuery + Ajax
$("form#data").submit(function(e) {
e.preventDefault();
var formData = new FormData(this);
$.ajax({
url: window.location.pathname,
type: 'POST',
data: formData,
success: function (data) {
alert(data)
},
cache: false,
contentType: false,
processData: false
});
});
Short Version
$("form#data").submit(function(e) {
e.preventDefault();
var formData = new FormData(this);
$.post($(this).attr("action"), formData, function(data) {
alert(data);
});
});
another option is to use an iframe and set the form's target to it.
you may try this (it uses jQuery):
function ajax_form($form, on_complete)
{
var iframe;
if (!$form.attr('target'))
{
//create a unique iframe for the form
iframe = $("<iframe></iframe>").attr('name', 'ajax_form_' + Math.floor(Math.random() * 999999)).hide().appendTo($('body'));
$form.attr('target', iframe.attr('name'));
}
if (on_complete)
{
iframe = iframe || $('iframe[name="' + $form.attr('target') + '"]');
iframe.load(function ()
{
//get the server response
var response = iframe.contents().find('body').text();
on_complete(response);
});
}
}
it works well with all browsers, you don't need to serialize or prepare the data.
one down side is that you can't monitor the progress.
also, at least for chrome, the request will not appear in the "xhr" tab of the developer tools but under "doc"
I was having this same issue in ASP.Net MVC with HttpPostedFilebase and instead of using form on Submit I needed to use button on click where I needed to do some stuff and then if all OK the submit form so here is how I got it working
$(".submitbtn").on("click", function(e) {
var form = $("#Form");
// you can't pass Jquery form it has to be javascript form object
var formData = new FormData(form[0]);
//if you only need to upload files then
//Grab the File upload control and append each file manually to FormData
//var files = form.find("#fileupload")[0].files;
//$.each(files, function() {
// var file = $(this);
// formData.append(file[0].name, file[0]);
//});
if ($(form).valid()) {
$.ajax({
type: "POST",
url: $(form).prop("action"),
//dataType: 'json', //not sure but works for me without this
data: formData,
contentType: false, //this is requireded please see answers above
processData: false, //this is requireded please see answers above
//cache: false, //not sure but works for me without this
error : ErrorHandler,
success : successHandler
});
}
});
this will than correctly populate your MVC model, please make sure in your Model, The Property for HttpPostedFileBase[] has the same name as the Name of the input control in html i.e.
<input id="fileupload" type="file" name="UploadedFiles" multiple>
public class MyViewModel
{
public HttpPostedFileBase[] UploadedFiles { get; set; }
}
Or shorter:
$("form#data").submit(function() {
var formData = new FormData(this);
$.post($(this).attr("action"), formData, function() {
// success
});
return false;
});
EDIT: with the new version of JQuery (3.6), you could also try using contentType function argument instead of enctype. Try contentType: multipart/form-data.
For me, it didn't work without enctype: 'multipart/form-data' field in the Ajax request. I hope it helps someone who is stuck in a similar problem.
Even though the enctype was already set in the form attribute, for some reason, the Ajax request didn't automatically identify the enctype without explicit declaration (jQuery 3.3.1).
// Tested, this works for me (jQuery 3.3.1)
fileUploadForm.submit(function (e) {
e.preventDefault();
$.ajax({
type: 'POST',
url: $(this).attr('action'),
enctype: 'multipart/form-data',
data: new FormData(this),
processData: false,
contentType: false,
success: function (data) {
console.log('Thank God it worked!');
}
}
);
});
// enctype field was set in the form but Ajax request didn't set it by default.
<form action="process/file-upload" enctype="multipart/form-data" method="post" >
<input type="file" name="input-file" accept="text/plain" required>
...
</form>
As others mentioned above, please also pay special attention to the contentType and processData fields.
A Simple but more effective way:
new FormData() is itself like a container (or a bag). You can put everything attr or file in itself.
The only thing you'll need to append the attribute, file, fileName eg:
let formData = new FormData()
formData.append('input', input.files[0], input.files[0].name)
and just pass it in AJAX request. Eg:
let formData = new FormData()
var d = $('#fileid')[0].files[0]
formData.append('fileid', d);
formData.append('inputname', value);
$.ajax({
url: '/yourroute',
method: 'POST',
contentType: false,
processData: false,
data: formData,
success: function(res){
console.log('successfully')
},
error: function(){
console.log('error')
}
})
You can append n number of files or data with FormData.
and if you're making AJAX Request from Script.js file to Route file in Node.js beware of using
req.body to access data (ie text)
req.files to access file (ie image, video etc)
The code below works for me
$(function () {
debugger;
document.getElementById("FormId").addEventListener("submit", function (e) {
debugger;
if (ValidDateFrom()) { // Check Validation
var form = e.target;
if (form.getAttribute("enctype") === "multipart/form-data") {
debugger;
if (form.dataset.ajax) {
e.preventDefault();
e.stopImmediatePropagation();
var xhr = new XMLHttpRequest();
xhr.open(form.method, form.action);
xhr.onreadystatechange = function (result) {
debugger;
if (xhr.readyState == 4 && xhr.status == 200) {
debugger;
var responseData = JSON.parse(xhr.responseText);
SuccessMethod(responseData); // Redirect to your Success method
}
};
xhr.send(new FormData(form));
}
}
}
}, true);
});
In your Action Post Method, pass parameter as HttpPostedFileBase UploadFile and make sure your file input has same as mentioned in your parameter of the Action Method.
It should work with AJAX Begin form as well.
Remember over here that your AJAX BEGIN Form will not work over here since you make your post call defined in the code mentioned above and you can reference your method in the code as per the Requirement
I know I am answering late but this is what worked for me
Just to remind, in 2022 you don't need to use jquery. Try js standard Fetch API
var formData = new FormData(this);
fetch(url, {
method: 'POST',
body: formData
})
.then(response => {
if(response.ok) {
//success
alert(response);
} else {
throw Error('Server error');
}
})
.catch(error => {
console.log('fail', error);
});
This is a solution that I implemented
var formData = new FormData();
var files = $('input[type=file]');
for (var i = 0; i < files.length; i++) {
if (files[i].value == "" || files[i].value == null) {
return false;
}
else {
formData.append(files[i].name, files[i].files[0]);
}
}
var formSerializeArray = $("#Form").serializeArray();
for (var i = 0; i < formSerializeArray.length; i++) {
formData.append(formSerializeArray[i].name, formSerializeArray[i].value)
}
$.ajax({
type: 'POST',
data: formData,
contentType: false,
processData: false,
cache: false,
url: '/Controller/Action',
success: function (response) {
if (response.Success == true) {
return true;
}
else {
return false;
}
},
error: function () {
return false;
},
failure: function () {
return false;
}
});
---Solution for DOT NET CORE MVC Implementation---
While looking at this question I though I should right .NET CORE implementation for this because the question is not specific to any backend language.
So guys here is the standalone implementation example.
Objective :- To submit form fields including files and how we can get data in a single model at backend
HTML Code / View Code - Views/Home/Index.cshtml
#{
ViewData["Title"] = "Home Page";
}
<input type="file" id="FileUpload1" multiple />
<div>
<label>Enter First Name :</label>
<input type="text" id="nameText" maxlength="50" />
</div>
<input type="button" id="btnUpload" value="Submit Form with Files" />
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
<script>
$(document).ready(function () {
$('#btnUpload').click(function () {
// Checking whether FormData is available in browser
if (window.FormData !== undefined) {
var fileUpload = $("#FileUpload1").get(0);
var files = fileUpload.files;
// Create FormData object
var fileData = new FormData();
// Looping over all files and add it to FormData object
for (var i = 0; i < files.length; i++) {
fileData.append("files", files[i]);
}
// Adding one more key to FormData object
fileData.append('FirstName', $("#nameText").val());
$.ajax({
url: '/Home/UploadFiles',
type: "POST",
contentType: false, // Not to set any content header
processData: false, // Not to process data
data: fileData,
success: function (result) {
alert(result);
},
error: function (err) {
alert(err.statusText);
}
});
} else {
alert("FormData is not supported.");
}
});
});
</script>
Backend Code / Controller action method Controllers/HomeController.cs
public class HomeController : Controller
{
private readonly ILogger<HomeController> _logger;
private readonly IWebHostEnvironment _environment;
public HomeController(ILogger<HomeController> logger, IWebHostEnvironment environment)
{
_logger = logger;
_environment = environment;
}
public IActionResult Index()
{
return View();
}
public IActionResult Privacy()
{
return View();
}
[HttpPost]
public async Task<IActionResult> UploadFiles(MyForm myForm)
{
var files = myForm.Files;
// First Name
string name = myForm.FirstName;
// check All files
foreach (IFormFile source in files)
{
string filename = ContentDispositionHeaderValue.Parse(source.ContentDisposition).FileName.Trim('"');
filename = this.EnsureCorrectFilename(filename);
string fileWithPath = this.GetPathAndFilename(filename);
// Create directory if not exist
Directory.CreateDirectory(Path.GetDirectoryName(fileWithPath));
using (FileStream output = System.IO.File.Create(fileWithPath))
await source.CopyToAsync(output);
}
return Ok("Success");
}
[ResponseCache(Duration = 0, Location = ResponseCacheLocation.None, NoStore = true)]
public IActionResult Error()
{
return View(new ErrorViewModel { RequestId = Activity.Current?.Id ?? HttpContext.TraceIdentifier });
}
public class MyForm
{
public string FirstName { get; set; }
public IList<IFormFile> Files { get; set; }
}
private string EnsureCorrectFilename(string filename)
{
if (filename.Contains("\\"))
filename = filename.Substring(filename.LastIndexOf("\\") + 1);
return filename;
}
private string GetPathAndFilename(string filename)
{
return Path.Combine(_environment.ContentRootPath, "uploadedFiles", filename);
}
}
Full Source Code Repo: https://github.com/rj-learning/DotNetCoreFileUpload
In my case I had to make a POST request, which had information sent through the header, and also a file sent using a FormData object.
I made it work using a combination of some of the answers here, so basically what ended up working was having this five lines in my Ajax request:
contentType: "application/octet-stream",
enctype: 'multipart/form-data',
contentType: false,
processData: false,
data: formData,
Where formData was a variable created like this:
var file = document.getElementById('uploadedFile').files[0];
var form = $('form')[0];
var formData = new FormData(form);
formData.append("File", file);
you can just append them on your formdata, add your files and datas in it.you can read this..
https://developer.mozilla.org/en-US/docs/Web/API/FormData/append
for better understanding. you can separately retrieve them $_FILES for your files and $_POST for your data.
<form id="form" method="post" action="otherpage.php" enctype="multipart/form-data">
<input type="text" name="first" value="Bob" />
<input type="text" name="middle" value="James" />
<input type="text" name="last" value="Smith" />
<input name="image" type="file" />
<button type='button' id='submit_btn'>Submit</button>
</form>
<script>
$(document).on("click", "#submit_btn", function (e) {
//Prevent Instant Click
e.preventDefault();
// Create an FormData object
var formData = $("#form").submit(function (e) {
return;
});
//formData[0] contain form data only
// You can directly make object via using form id but it require all ajax operation inside $("form").submit(<!-- Ajax Here -->)
var formData = new FormData(formData[0]);
$.ajax({
url: $('#form').attr('action'),
type: 'POST',
data: formData,
success: function (response) {
console.log(response);
},
contentType: false,
processData: false,
cache: false
});
return false;
});
</script>
///// otherpage.php
<?php
print_r($_FILES);
?>

How to pass file object through ajax sumbit with spring mvc controller

I am trying to pass the file object through jquery ajax submit.
JSP code
<div id="import-file">
<input type="file" id="file"/>
<table>
<tr><td><input type="radio" name="type" value="csv"></td><td>CSV File</td></tr>
<tr><td><input type="radio" name="type" value="excel"></td><td>Excel spread sheet</td></tr>
<tr><td><input type="radio" name="type" value="tab"></td><td>Tab delimited</td></tr>
</table>
</div>
Java script code
var type = $($('input:radio:checked')[0]).val();
var file = $("#file")[0].files[0];
alert($("#file")[0].files[0].name);
$.ajax({
data :{
"file" : file,
"type" : type
},
type: "POST",
url: "fileupload.htm",
success: function(data){
alert(data);
},
error:function(err){
alert(err);
}
});
finally here is my spring controller code:
#RequestMapping(value="fileupload.htm",method=RequestMethod.POST )
public #ResponseBody String uploadFile(#RequestParam String type, #RequestParam("file") MultipartFile file){
logger.info("file type : "+type + "file is "+file.toString());
return "SUCCESS";
}
Am getting NS_NOINTERFACE: Component does not have requested interface [nsIDOMBlob.slice] error in my firebug console.
I have solved it like this:
JavaScript code
var formData = new FormData($('form')[0]);
console.log("form data "+formData);
$.ajax({
url: 'fileupload.htm',
data: formData,
processData: false,
contentType: false,
type: 'POST',
success: function(data){
alert(data);
},
error: function(err){
alert(err);
}
});
JSP Code
<form action="fileupload.htm" method="post" enctype="multipart/form-data" name="fileinfo">
<input type="file" name="fileName" id="file"/>
</form>
Spring Controller:
#RequestMapping(value="fileupload.htm",method=RequestMethod.POST )
public #ResponseBody String uploadFile(#RequestParam("fileName") MultipartFile file){
try{
logger.info("file is "+file.toString());
}catch(Exception e){
return "error occured "+e.getMessage();
}
}
Hope it helps some body.

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