I am trying to execute a shell command and return the output to the webpage
app.post("/api/procText", function (request, response) {
var input = request.body.inString;
console.log(request.body)
var exec = require('child_process').execSync;
var cmd = 'scripts/myScript -s' + '\'' + input + '\'';
var script_output = ''
exec(cmd, {
env: {
'resources': '/dasd/okok/data'
}
}, function (error, stdout, stderr) {
console.log("Inside exec " + stdout)
script_output = stdout
});
console.log("Outside " + script_output);
response.send("Sending " + script_output);
});
However, the script_output is always blank and also i do not see the inner message on the console
What am i doing wrong?
Also, here is the corresponding html
<body>
<div class="container">
<h1>Welcome.</h1>
<div id="sampleInput" class="input-group-lg center-block helloInput">
<p class="lead">Input Text?</p>
<input id="sample_text" type="text" class="form-control"
placeholder="inString" aria-describedby="sizing-addon1" value="" />
</div>
<p id="response" class="lead text-center"></p>
</div>
<!-- jQuery (necessary for Bootstrap's JavaScript plugins) -->
<script
src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<!-- Include all compiled plugins (below), or include individual files as needed -->
<script
src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<script>
//Submit data when enter key is pressed
$('#sample_text').keydown(function(e) {
var inString = $('#sample_text').val();
if (e.which == 13 && inString.length > 0) { //catch Enter key
//POST request to API to create a new visitor entry in the database
$.ajax({
method : "POST",
url : "./api/procText",
contentType : "application/json",
data : JSON.stringify({
inString : inString
})
}).done(function(data) {
alert(data);
$('#response').html(data);
$('#sampleInput').hide();
});
}
});
</script>
</body>
i figured it out. all i had to do was return stdout using callback
script_output=exec(cmd, {env: {'NLTK_DATA': process.cwd()+"/scripts/nltk_data"}}, function(error, stdout, stderr) {
console.log("Inside exec "+stdout);
return stdout;
});
console.log("Sending "+script_output);
response.send(script_output);
Related
I am new to Ajax. Trying to fetch JSON data returned from Get webAPI from controllers but on button click nothing rendering on View.
This is how my view look like
<!DOCTYPE html>
<html>
<head>
<title></title>
<meta charset="utf-8" />
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
<script type="text/javascript">
$(document).ready(function () {
var ulEmployees = $('#ulEmployees');
$('#btn').click(function () {
var id = $(this).attr(id);
$.ajax({
url: '/api/employee', type: "GET", dataType: "json",
data: { id: id },
success: function (data) {
ulEmployees.empty();
$.each(data, function (index, val) {
var fullName = val.FirstName + ' ' + val.LastName;
ulEmployees.append('<li>' + fullName + '</li>')
});
}
});
});
$('#btnClear').click(function () {
ulEmployees.empty();
});
});
</script>
</head>
<body>
<input id="btn" type="button" value="Get All Employees" />
<input id="btnClear" type="button" value="Clear" />
<ul id="ulEmployees"></ul>
</body>
</html>
This is the JSON data returned by webapi
Can anyone help me what went wrong here? Thanks in advance.
Below should work:
$(document).ready(function () {
var ulEmployees = $('#ulEmployees');
$('#btn').click(function () {
var id = $(this).attr('id');
fetch('/api/employee?id=' + id)
.then((resp) => resp.json())
.then(function(data) {
ulEmployees.empty();
$.each(data, function (index, val) {
var fullName = val.firstName + ' ' + val.lastName;
ulEmployees.append('<li>' + fullName + '</li>');
});
})
.catch(function(error) {
console.log(error);
});
});
});
I am trying to upload a large file and having issues of submit happening twice.
But not for small file sizes.
The $("#fileform").ajaxSubmit({ call seems to be happening twice or multiple times instead of once. Or the submit 'success : function(data) {' .
Not sure. I am able to see the details in 'commands_cvs_grpupload.jsp' twice.
HTML:
<form id="fileform" method="post" align="left">
<input id="importFile" name="importFile" type="file" onkeydown="return false"
onpaste="return false" ondragenter="return false"/>
<input id= "errorRecords" name = "errorRecords" type="hidden"/>
<input id= "type" name = "type" value="BULK_UPLOAD" type="hidden"/>
<input name="import" type="button" onClick="importCSV();" value="Import CSV"/>
Script for importCSV():
function importCSV(){
if(checkFileIsNull()){
$("#requiredFile").css("color","#000000");
$("#requiredFileType").css("color","#000000");
$("#gridWrapper").hide("slow");
configDisplayMessage("displayMessage","White");
$("#displayMessage").html("");
$("#ui-progressbar-value").html("");
$("#statusmessage").html("");
$( "#progressbar" ).progressbar({
value: 0
});
$("#processDiv").show();
$("#progressbar").show();
$("#statusmessage").show();
$("#ui-progressbar-value").show();
$("#progressbar").html("Waiting...");
// submit file to SBS; command is callaSBSImport
submitFileToSBS();
// get status for SBS ; command is callSBSStatus
getStatusFromSBS();
startProcess = setInterval("getStatusFromSBS()",3000);
}else{
$("#gridWrapper").hide("slow");
$("processDiv").hide();
$("#progressbar").hide();
$("#statusmessage").hide();
$("#ui-progressbar-value").hide();
}
}
Script for submitFileToSBS()
function submitFileToSBS(){
$("#fileform").ajaxSubmit({
type : "post",
url : "framework/commands_cvs_grpupload.jsp",
dataType:"json",
data : "Command=callSBSGroup&Service=ComplianceValidation&Method=uploadGroupings",
success : function(data) {
setProcessBar(100,"Process is done.");
clearInterval(startProcess);
errorRecords = Array();
var list = "";
var stringBuilder = "";
/*MY CODE*/
},
error : function (XMLHttpRequest, textStatus, errorThrown) {
/*MY CODE*/
}
});
}
I have a SOAP webservice created in c# (hosted on localhost) called soapService.aspx . It has a method called displayClass(String id, String theDate)
it returns. This returns following json
[{"lesson_id":2,"customer_id":4,"instructor_id":8,"dance_style_id":2,"hourly_rate":20,"lesson_time":"Afternoon","lesson_date":"03/12/2015","start_time":"11:22","end_time":"14:22 ","notes":"test test","payment_status":0,"status":0,"lesson_slot":null,"duration":3},{"lesson_id":3,"customer_id":4,"instructor_id":8,"dance_style_id":2,"hourly_rate":20,"lesson_time":"Afternoon","lesson_date":"03/12/2015","start_time":null,"end_time":null,"notes":null,"payment_status":0,"status":0,"lesson_slot":null,"duration":3},{"lesson_id":4,"customer_id":4,"instructor_id":8,"dance_style_id":2,"hourly_rate":20,"lesson_time":"Afternoon","lesson_date":"03/12/2015","start_time":null,"end_time":null,"notes":null,"payment_status":0,"status":0,"lesson_slot":null,"duration":3}]
I found this using web service invoke method given on the web service description page.
I want to catch the response using ajax.
So far I wrote this
$(document).ready(function () {
function displayClass() {
var instructorInputID = $('#instructorIdText').val();
var instructorInputDate = $('#instructordateText').val();
//send this id to web service
$.ajax({
url: "http://localhost/soapService.asmx/displayClasses",
type: POST,
dataType:"json",
data:instructorInput,
contentType:"application/json; charset:utf-8",
success:function(msg){
//process the msg
}
});
}
});
1) How do I invoke the web service method by passing parameters
2) How do i display all these json data in a table? Please help
Edit : Tried to post
data: "{'id': '" + instructorInputID + "','theDate': '" + instructorInputDate + "'}",
THis is the response I get from console
XMLHttpRequest cannot load http://localhost:18324/soapService.asmx/displayClasses. Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost:17182' is therefore not allowed access.
EDIT Two :
complete code : Still Error.. msg not defined
<pre>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.2.0/jquery.min.js"></script>
<script>
$(document).ready(function () {
$("#findClassBtn").click(function () {
displayClass();
});
function onSuccess(msg) {
$.each(msg, function(i, item) {
var tds = "";
$.each(item, function(i, item) {
tds += "<td>" + item + "</td>";
});
$('#table').append("<tr>" + tds + "</tr>");
});
}
function displayClass() {
var instructorInputID = $('#instructorIdText').val();
var instructorInputDate = $('#instructordateText').val();
//send this id to web service
$.ajax({
url: "soapService.asmx/displayClasses",
type: "POST",
dataType:"json",
data: {
'id': instructorInputID,
'theDate': instructorInputDate
},
contentType: "application/json; charset:utf-8",
success: onSuccess(msg)
});
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
</div>
<asp:Label ID="Label1" runat="server" Text="Add Your Id"></asp:Label>
<p>
<asp:TextBox ID="instructorIdText" runat="server"></asp:TextBox>
</p>
<asp:Label ID="Label2" runat="server" Text="Add date (dd/mm/yyyy)"></asp:Label>
<p>
<asp:TextBox ID="instructordateText" runat="server"></asp:TextBox>
</p>
<asp:Button ID="findClassBtn" runat="server" OnClick="findClassBtn_Click" Text="Find Classes" />
<p>
<asp:Label ID="Label3" runat="server" Text="Label"></asp:Label>
</p>
</form>
<table id="table">
</table>
<pre>
Error: msg is not defined.
$(document).ready(function () {
function displayClass() {
var instructorInputID = $('#instructorIdText').val();
var instructorInputDate = $('#instructordateText').val();
//send this id to web service
$.ajax({
url: "http://localhost/soapService.asmx/displayClasses",
type: POST,
dataType:"json",
data: {
'id': instructorInputID,
'theDate': instructorInputDate
},
contentType: "application/json; charset:utf-8",
success: function (msg) {
$.each(msg, function(i, item) {
var tds = "";
$.each(item, function(i, item) {
tds += "<td>" + item + "</td>";
});
$('#table').append("<tr>" + tds + "</tr>");
});
}
});
}
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<table id="table">
</table>
Here's my form:
<form id="frmUpload" action="../scripts/upload.php" method="post" enctype="multipart/form-data">
<div id="sermonInfo">
File: <input type="file" id="uploadedFile" name="uploadedFile" class="error"><br>
<br>
Title: <input type="text" id="title" name="sermonTitle" size="35" maxlength="100">
</div>
</form>
<div id="uploadInfo">
<div class="progress">
<div class="statusBar" style="width: 0%;"></div>
<div class="percent">0%</div>
</div>
<div id="status"></div>
<br>
<div id="required">Only mp3 files are allowed!</div>
</div>
And here's the JS I'm using:
<script>
$(function() {
/*
* Upload
*/
// Reset validation and progress elements
var formValid = true,
percentVal = '0%';
$('#uploadedFile, #title').removeClass('error');
$('#status, #required').empty().removeClass();
$('.statusBar').width(percentVal)
$('.percent').html(percentVal);
$('form').ajaxForm({
beforeSend: function(e) {
if (!ValidateUploadForm()) {
formValid = false;
console.log('validateuploadform returned false');
} else {
console.log('validateuploadform returned true');
formValid = true;
}
console.log('in beforeSend. formValid: ' + formValid);
if (!formValid) {
return false;
}
},
uploadProgress: function(event, position, total, percentComplete) {
console.log('in uploadProgress function. formValid: ' + formValid);
if (formValid) {
var percentVal = percentComplete + '%';
$('.statusBar').width(percentVal)
$('.percent').html(percentVal);
}
},
complete: function(xhr) {
console.log('in complete function. formValid: ' + formValid);
if (formValid) {
console.log('xhr.responseText: ' + xhr.responseText);
console.log('formValid: ' + formValid);
if (xhr.responseText === 'success') {
$('.statusBar').width('100%');
$('.percent').html('100%');
$('#status').html('Successfully uploaded the file.').addClass('successUpload');
// Clear the form
ClearForm();
} else if (xhr.responseText === 'fail') {
$('#status').html('There was a problem uploading the file. Try again.<br>If the problem persists, contact your system administrator.').addClass('errorUpload');
}
}
}
}); // End Upload Status Bar
});
function ValidateUploadForm() {
// Reset errors and clear message
$('#uploadedFile, #title').removeClass('error');
$('#required').empty();
var result = true;
title = $('#title').val(),
fileName = $('#uploadedFile').val();
extension = $('#uploadedFile').val().split('.').pop();
if (fileName !== '' && extension !== 'mp3') {
$('#uploadedFile').addClass('error');
$('#required').html('Only mp3 files are allowed!');
return false;
} else if (fileName === '') {
result = false;
} else if (title === '') {
$('#title').addClass('error');
result = false;
}
console.log('returning ' + result + ' from the validateuploadform function');
if (!result) { $('#required').html('All fields are required.'); }
return result;
}
function ClearForm() {
$('#uploadedFile, #title').val('').removeClass();
}
</script>
As you can see, I'm using console output the keep an eye on what's going on.
My problem is, if a file is selected, the file still uploads, whether formValid (in beforeSend) is true or false.
I've tried adding preventDefault before return false;. I've also tried clearing the file input in the if (!formValid) {} block. As you can see, I've wrapped the uploadProgress and complete functions to check if formValid is false. If the console output in uploadProgress shows formValid to be false, the file still uploads.
What am I missing here? How can I prevent the file upload if the validation fails?
I finally figured out the issue: I was comparing my script to some examples online and noticed that the examples' callback was named beforeSubmit, but I was using beforeSend.
Oddly, the validation code was still executing, but returning false didn't stop the upload.
Basically, it looks like you might be missing the jquery.form.js extension. Without JavaScript console output, I can only guess that that ought to be the problem. Try the following (entire) page as a reference, where stopping the upload works:
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>Test Page</title>
<script src="//ajax.googleapis.com/ajax/libs/jquery/2.0.0/jquery.min.js" type="text/javascript">
</script>
<script src="http://malsup.github.com/jquery.form.js" type="text/javascript">
</script>
<style type="text/css">
div.c1 {width: 0%;}
</style>
</head>
<body>
<form id="frmUpload" action="%3C?php%20basename(__FILE__,%20'.php');%20?%3E" method="post" enctype="multipart/form-data" name="frmUpload">
<div id="sermonInfo">File: <input type="file" id="uploadedFile" name="uploadedFile" class="error"><br>
<br>
Title: <input type="text" id="title" name="sermonTitle" size="35" maxlength="100"></div>
<input type="submit" value="Submit"></form>
<div id="uploadInfo">
<div class="progress">
<div class="statusBar c1"></div>
<div class="percent">0%</div>
</div>
<div id="status"></div>
<br>
<div id="required">Only mp3 files are allowed!</div>
</div>
<script type="text/javascript">
$(function() {
/*
* Upload
*/
// Reset validation and progress elements
var formValid = true,
percentVal = '0%';
$('#uploadedFile, #title').removeClass('error');
$('#status, #required').empty().removeClass();
$('.statusBar').width(percentVal)
$('.percent').html(percentVal);
$('form').ajaxForm({
beforeSend: function(e) {
if (!ValidateUploadForm()) {
formValid = false;
console.log('validateuploadform returned false');
} else {
console.log('validateuploadform returned true');
formValid = true;
}
console.log('in beforeSend. formValid: ' + formValid);
if (!formValid) {
return false;
}
},
uploadProgress: function(event, position, total, percentComplete) {
console.log('in uploadProgress function. formValid: ' + formValid);
if (formValid) {
var percentVal = percentComplete + '%';
$('.statusBar').width(percentVal)
$('.percent').html(percentVal);
}
},
complete: function(xhr) {
console.log('in complete function. formValid: ' + formValid);
if (formValid) {
console.log('xhr.responseText: ' + xhr.responseText);
console.log('formValid: ' + formValid);
if (xhr.responseText === 'success') {
$('.statusBar').width('100%');
$('.percent').html('100%');
$('#status').html('Successfully uploaded the file.').addClass('successUpload');
// Clear the form
ClearForm();
} else if (xhr.responseText === 'fail') {
$('#status').html('There was a problem uploading the file. Try again.<br>If the problem persists, contact your system administrator.').addClass('errorUpload');
}
}
}
}); // End Upload Status Bar
});
function ValidateUploadForm() {
// Reset errors and clear message
$('#uploadedFile, #title').removeClass('error');
$('#required').empty();
var result = true;
title = $('#title').val(),
fileName = $('#uploadedFile').val();
extension = $('#uploadedFile').val().split('.').pop();
if (fileName !== '' && extension !== 'mp3') {
$('#uploadedFile').addClass('error');
$('#required').html('Only mp3 files are allowed!');
return false;
} else if (fileName === '') {
result = false;
} else if (title === '') {
$('#title').addClass('error');
result = false;
}
console.log('returning ' + result + ' from the validateuploadform function');
if (!result) { $('#required').html('All fields are required.'); }
return result;
}
function ClearForm() {
$('#uploadedFile, #title').val('').removeClass();
}
</script>
</body>
</html>
As a side note, you might want to use
extension = $('#uploadedFile').val().split('.').pop().toLowerCase();
to make sure that the form also accepts MP3, as this is seen relatively often too in the wild.
If this doesn't fix your problem, it would help if you could upload the full HTML of one page in question.
UPDATE
With respect to the uploaded files, you have a simple typo in line 91 of testUpload.php:
if ((fileName === '') || (extension !== 'mp3'))
should be
if ((fileName === '') || (extension !== 'mp3')) {
I have to execute a authentication process using JQuery. I have two textbox UserName and Password and two button are Login and Submit.
If i am clicking on Submit button then it will automatically fire validation that good and this functionality i have to implement on Login button click.
So how could i achieve automatic validation on button click?
Why i would like this:
Usin JQuery it is sending a request to the server with UserName and
Password during that time i will display Processing....
Then it will verify supplied value with database and return response
with Success or Failed then i will display either Success or Failed.
Here is the code snippet:
<script src="#Url.Content("~/Scripts/jquery.validate.min.js")" type="text/javascript"></script>
<script src="#Url.Content("~/Scripts/jquery.validate.unobtrusive.min.js")" type="text/javascript"></script>
#Html.ValidationSummary(true, "Login was unsuccessful. Please correct the errors and try again.")
#using (Html.BeginForm(null, null, FormMethod.Get, new { id = "Form1", name = "Form1" }))
{
<table>
<tr>
<td>
User Name
</td>
<td>#Html.TextBoxFor(u => u.UserName, new { id = "txtUser" }) #Html.ValidationMessageFor(u => u.UserName)
</td>
</tr>
<tr>
<td>
Password
</td>
<td>#Html.TextBoxFor(u => u.Password, new { id = "txtPassword" }) #Html.ValidationMessageFor(u => u.Password)
</td>
</tr>
<tr>
<td>
</td>
<td>
<input type="button" value="Login" onclick="checkAuthentication();" />
<input type="submit" value="Submit" />
</td>
</tr>
<tr>
<td colspan="2">
<div id="dvStatus" class="loginMessageStatus">
</div>
</td>
</tr>
</table>
}
<script language="javascript" type="text/javascript">
function getUserCredentials() {
var user = jQuery('#txtUserName').val();
var pass = jQuery('#txtPassword').val();
return { UserName: user, Password: pass };
}
function clearUserCredentials() {
jQuery('#txtUserName').val("");
jQuery('#txtPassword').val("");
jQuery('#txtUserName').focus();
}
function checkAuthentication() {
jQuery('#dvStatus').html("<div class='requestProcess'></div><div class='requestMessage'>Please wait...</div>")
var postData = getUserCredentials();
var ajaxResponse = $.ajax({
type: "post",
url: '#Url.Action("Index", "Login")',
dataType: 'json',
contentType: "application/json; charset=utf-8",
data: JSON.stringify(postData),
success: function (result) {
var res = jQuery.parseJSON(result);
if (res.Success == true) {
jQuery('#dvStatus').html("<div class='requestSuccess'></div><div class='requestMessage'>Your are successfully logged in. Redirecting...</div>")
jQuery.doTimeout(100, redirectToPage);
}
else {
jQuery('#dvStatus').html("<div class='requestFailed'></div><div class='requestMessage'>Error: " + res.Message + ". <a href='javascript:void(0)' onclick='clearUserCredentials()'>Try Again</a></div>")
}
}
});
}
function redirectToPage() {
href = '#Url.Action("Index", "TabMaster")';
window.location.href = href;
}
Note:-
Validation completely work with Submit button
Verifying process completely work with Login button ( just i have to integrate validation with Login button)
you can do the validation using the onclick of the submit button with the following event handler:
Add an identifier to the button:
<input id="SubmitButton" type="submit" value="Submit" />
JavaScript:
$(document).ready(function(){
$("#SubmitButton").click(function(){
return checkAuthentication();
});
});
Change the Validation method to return whether it failed or not:
function checkAuthentication() {
var _user = jQuery.trim(jQuery('#txtUserName').val());
var _pass = jQuery.trim(jQuery('#txtPassword').val());
if (_user.length == 0 || _pass.length == 0) {
jQuery('#dvStatus').html("<div class='requestFailed'></div><div class='requestMessage'>User Name and Password are required!</div>")
return false;
}
else {
jQuery('#dvStatus').html("<div class='requestProcess'></div><div class='requestMessage'>Please wait...</div>")
var postData = getUserCredentials();
var ajaxResponse = $.ajax({
type: "post",
url: '#Url.Action("Index", "Login")',
dataType: 'json',
contentType: "application/json; charset=utf-8",
data: JSON.stringify(postData),
success: function (result) {
var res = jQuery.parseJSON(result);
if (res.Success == true) {
jQuery('#dvStatus').html("<div class='requestSuccess'></div><div class='requestMessage'>Your are successfully logged in. Redirecting...</div>")
jQuery.doTimeout(100, redirectToPage);
}
else {
jQuery('#dvStatus').html("<div class='requestFailed'></div><div class='requestMessage'>Error: " + res.Message + ". <a href='javascript:void(0)' onclick='clearUserCredentials()'>Try Again</a></div>")
}
}
});
return true;
}
}
This should then stop the submit if the validation fails.
I have solved this one:
I have used only submit button
<input id="btnLogin" type="submit" value="Login" />
Following are the updated code
<script language="javascript" type="text/javascript">
$(document).ready(function () {
//$.preloadCssImages();
$("#btnLogin").click(function () {
if ($("#Form1").valid() == true) {
checkAuthentication();
return false;
}
});
});
function getUserCredentials() {
var user = jQuery('#txtUserName').val();
var pass = jQuery('#txtPassword').val();
return { UserName: user, Password: pass };
}
function clearUserCredentials() {
jQuery('#txtUserName').val("");
jQuery('#txtPassword').val("");
jQuery('#txtUserName').focus();
}
function checkAuthentication() {
jQuery('#dvStatus').html("<div class='requestProcess'></div><div class='requestMessage'>Please wait...</div>")
var postData = getUserCredentials();
var ajaxResponse = $.ajax({
type: "post",
url: '#Url.Action("Index", "Login")',
dataType: 'json',
contentType: "application/json; charset=utf-8",
data: JSON.stringify(postData),
success: function (result) {
var res = jQuery.parseJSON(result);
if (res.Success == true) {
jQuery('#dvStatus').html("<div class='requestSuccess'></div><div class='requestMessage'>Your are successfully logged in. Redirecting...</div>")
jQuery.doTimeout(100, redirectToPage);
}
else {
jQuery('#dvStatus').html("<div class='requestFailed'></div><div class='requestMessage'>Error: " + res.Message + ". <a href='javascript:void(0)' onclick='clearUserCredentials()'>Try Again</a></div>")
}
}
});
}
function redirectToPage() {
href = '#Url.Action("Index", "TabMaster")';
window.location.href = href;
}
</script>