Develop Reference

Javascript query on SharePoint list items returning same results

I'm trying to show the Title field of a SharePoint list using a JavaScript Query but it just keeps returning the same result regardless of the link I click on. So as below, if I click on 'Lenovo T470' that's what its hould show above the image but it keeps showing 'Lenovo X1 Carbon'.
If I change the code:
var DeviceName = result.Title;
to:
var DeviceName = item.Title;
it comes back undefined. Any ideas? Full code below:
function getDevices() {
var txtTitle = "";
var txtTitleName = "";
//var txtDeviceType = "";
var query = "http://example.com/sites/it/ITInfrastructure/_vti_bin/listdata.svc/Devices?select=ID,Title";
var call = $.ajax({
url: query,
type: "GET",
dataType: "json",
headers: {
Accept: "application/json;odata=verbose"
}
});
call.done(function (data,textStatus, jqXHR){
$.each(data.d.results, function (i, result) {
var tempID = result.Id;
var tempTitle = result.Title;
var DeviceName = result.Title;
txtTitle = txtTitle + "<p><a href='/sites/it/ITInfrastructure/SitePages/Service%20Catalogue%20Devices.aspx?did=" + tempID + "'>" + tempTitle + "</a></p>";
txtTitleName ="<p>" + DeviceName + "</p>";
});
$('#devices').append($(txtTitle));
$('#devicetitle').append(txtTitleName);
});
call.fail(function (jqXHR,textStatus,errorThrown){
alert("Error retrieving data: " + jqXHR.responseText);
});
}

Post restful method java error

Can anyone tell me why this error?
Server Log:
StandardWrapperValve[ws_site.ApplicationConfig]: Servlet.service() for servlet ws_site.ApplicationConfig threw exception
java.lang.IllegalStateException: Expected BEGIN_OBJECT but was STRING at line 1 column 5
at com.google.gson.stream.JsonReader.expect(JsonReader.java:339)
at com.google.gson.stream.JsonReader.beginObject(JsonReader.java:322)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:165)
at com.google.gson.Gson.fromJson(Gson.java:791)
Javascript function, responsible for capturing the data of the filled form and sending to the server:
function save()
{
var str_name = $("#name").val();
var str_email = $("#email").val();
var str_country = $("#country").val();
var str_state = $("#state").val();
var str_city = $("#city").val();
var str_zipcode = $("#zipcode").val();
var str_neighborhood = $("#neighborhood").val();
var str_street = $("#street").val();
var str_number = $("#number").val();
var objdata = '{"email_user":"' + str_email + '","name_user":"' + str_name}';
var objlocation = '{"country":"' + str_country + '","state":"' + str_state + '","city":"' + str_city + '","neighborhood":"' + str_neighborhood + '","street":"' + str_street + '","number":"' + str_number + '","zipcode":"' + str_zipcode + '"}';
var obj = '{"user":['+objdata+'],"endereco":['+objlocation+']}';
$.ajax({
headers: {'content-type': 'application/json'},
dataType: 'json',
method: "POST",
url: "http://localhost:8080/SystemExample/webservice/Save/data",
data: obj
}).done(function (data)
{
alert(data);
});
}
Restful Java method:
#POST
#Path("data")
#Produces(MediaType.TEXT_PLAIN)
#Consumes({MediaType.APPLICATION_JSON})
public String registerUser(Gson json)
{
User u = json.fromJson("user", User.class);
Address a = json.fromJson("endereco", Address.class);
u.setAddress(a);
userDAO.save(u);
return "Saved successfully!";
}
Save userDAO method:
public void save(User u) {
EntityManager em = JPAUtil.getEntityManager();
EntityTransaction tx = em.getTransaction();
try {
tx.begin();
if (u.getId_User() == null) {
em.persist(u);
} else {
em.merge(u);
}
tx.commit();
} catch (Exception ex) {
ex.printStackTrace();
if (tx != null && tx.isActive()) {
tx.rollback();
}
} finally {
em.close();
}
}
Using Gson to convert json into an object

You're not sending an object to the server, you're just sending a string:
var obj = '...';
Instead, send an object:
var objdata = {
"email_user": str_email,
"name_user": str_name
};
var objlocation = {
"country": str_country,
"state": str_state,
"city": str_city,
"neighborhood": str_neighborhood,
"street": str_street,
"number": str_number,
"zipcode": str_zipcode
};
var obj = {
"user": [objdata],
"endereco": [objlocation]
};
A string that looks like an object is still a string.

objdata was not populating correctly as valid json. Try with this:
function save() {
var str_name = $("#name").val();
var str_email = $("#email").val();
var str_country = $("#country").val();
var str_state = $("#state").val();
var str_city = $("#city").val();
var str_zipcode = $("#zipcode").val();
var str_neighborhood = $("#neighborhood").val();
var str_street = $("#street").val();
var str_number = $("#number").val();
var objdata = '{"email_user":"' + str_email + '","name_user":"' + str_name + '"}';
console.log(objdata);
var objlocation = '{"country":"' + str_country + '","state":"' + str_state + '","city":"' + str_city + '","neighborhood":"' + str_neighborhood + '","street":"' + str_street + '","number":"' + str_number + '","zipcode":"' + str_zipcode + '"}';
console.log(objlocation);
var obj = '{"user":[' + objdata + '],"endereco":[' + objlocation + ']}';
console.log(obj);
$.ajax({
headers: {'content-type': 'application/json'},
dataType: 'json',
method: "POST",
url: "http://localhost:8080/SystemExample/webservice/Save/data",
data: JSON.parse(obj)
}).done(function (data) {
alert(data);
});
}

In your server side you are trying bind JSON data.
User u = json.fromJson("user", User.class);
Address a = json.fromJson("endereco", Address.class);
It mean user and endereco should be a JSON objects like below.
{
"user":{
"email_user":"str_mail","name_user":"nameeee"
},
"endereco":{
"country":"str_country","state":"str_state","city":"str_city","neighborhood":"str_neighborhood","street":"str_street","number":"str_number","zipcode":"str_zipcode"
}
}
But in your case user and endereco are actually a JSONArray's(See the square brackets.).
{
"user":[
{
"email_user":"str_mail",
"name_user":"nameeee"
}
],
"endereco":[
{
"country":"str_country",
"state":"str_state",
"city":"str_city",
"neighborhood":"str_neighborhood",
"street":"str_street",
"number":"str_number",
"zipcode":"str_zipcode"
}
]
}
So change below line
var obj = '{"user":['+objdata+'],"endereco":['+objlocation+']}';
to
var obj = '{"user":'+objdata+',"endereco":'+objlocation+'}';

JSON.stringify output to display in table

I POST my table data using ajax in database. Now I want to get back when I give click the open button.
$.ajax({
type: "POST",
url: "http://localhost/./Service/GetPageInfo",
dataType: "json",
contentType: 'application/json',
data: JSON.stringify({
filename: filename
}),
success: function (data) {
debugger;
//var p = JSON.stringify('[' + data + ']');
// alert(p.GetPageInfoResult[0])
//var k = data.main[0];
//alert(data.length);
//var jsonObj = $.parseJSON('[' + data + ']');
//alert(JSON.parse(data));
var jsonPretty = JSON.stringify(JSON.parse(data), null, 2);
},
error: function () {
alert('Error');
When I give my file name I want to display my pageinfo. I get data like
[{"main":{"sub":[],"tittle":"oops","startvalue":"21","stopvalue":"45","status":"","accumalated":"","comment":""}}]

You have not cleared where you want place your resultant Json. Below is that Success result placed in div having table . It is just a sample you may change as per your requirement:
function OnSuccess(response) {
debugger;
var xmlDoc = $.parseXML(response.d);
var xml = $(xmlDoc);
var page = xml.find("Table");
var row = "";
$('#popupdiv tbody').html('');
page.each(function () {
var page = $(this);
row = " " + page.find("tittle").text() + " " + page.find("startvalue").text() +
" " + page.find("stopvalue").text() + " " + page.find("status").text() +
" " + page.find("accumalated").text() + " " + page.find("comment").text() + "";
$('#popupdiv tbody').append(row);
});
}

Incrementally load a webpage: Where can I put: $("#LoadingImage").Hide();

I am not very experienced with JavaScript. Please see the code below:
<script src="http://ajax.aspnetcdn.com/ajax/jQuery/jquery-1.11.1.min.js"></script>
<script type = "text/javascript">
function GetSQLTable() {
//alert($("#<%=fieldGroupReferences.ClientID%>")[0].value)
var str = $("#<%=fieldGroupReferences.ClientID%>")[0].value
var res = str.split(",");
for (var i = 0; i < res.length; i++) {
$("#LoadingImage").show();
var div = document.createElement('div');
div.id = "div" + i
document.body.appendChild(div);
//alert(res[i]);
$.ajax({
type: "POST",
url: "Default3.aspx/GetSQLTable",
data: '{username: "' + $("#<%=fieldUserName.ClientID%>")[0].value + '", terminalname: "' + $("#<%=fieldTerminalName.ClientID%>")[0].value + '", terminalip: "' + $("#<%=fieldTerminalIP.ClientID%>")[0].value + '", mappingid: "' + res[i] + '", usergroup: "' + $("#<%=fieldUserGroup.ClientID%>")[0].value + '"}',
contentType: "application/json; charset=utf-8",
dataType: "json",
success: OnSuccess(i,res.length),
failure: function (response) {
//alert(response.d);
alert('there was an error loading the webpage')
}
});
}
function OnSuccess(i,totalrows) {
return function (response) {
if (response.d != "") {
document.getElementById('div' + i).innerHTML = document.getElementById('div' + i).innerHTML + '<br>' + '<br>' + response.d;
}
}
}
}
window.onload = GetSQLTable
</script>
The code incrementally builds a webpage i.e. x number of HTML tables are obtained and displayed to the webpage as and when they become ready. This works.
The problem is I don't know how to remove the LoadingImage once the webpage is complete i.e. $("#LoadingImage").hide();. OnSuccess is called x number of times depending on how many tables are returned so I cannot put it in there.

One way would be to count the number of successful onSuccess() calls, and hide your loading image when they are all complete:
<script src="http://ajax.aspnetcdn.com/ajax/jQuery/jquery-1.11.1.min.js"></script>
<script type = "text/javascript">
function GetSQLTable() {
//alert($("#<%=fieldGroupReferences.ClientID%>")[0].value)
var str = $("#<%=fieldGroupReferences.ClientID%>")[0].value
var res = str.split(",");
var numSucceeded = 0;
for (var i = 0; i < res.length; i++) {
$("#LoadingImage").show();
var div = document.createElement('div');
div.id = "div" + i
document.body.appendChild(div);
//alert(res[i]);
$.ajax({
type: "POST",
url: "Default3.aspx/GetSQLTable",
data: '{username: "' + $("#<%=fieldUserName.ClientID%>")[0].value + '", terminalname: "' + $("#<%=fieldTerminalName.ClientID%>")[0].value + '", terminalip: "' + $("#<%=fieldTerminalIP.ClientID%>")[0].value + '", mappingid: "' + res[i] + '", usergroup: "' + $("#<%=fieldUserGroup.ClientID%>")[0].value + '"}',
contentType: "application/json; charset=utf-8",
dataType: "json",
success: OnSuccess(i,res.length),
failure: function (response) {
//alert(response.d);
alert('there was an error loading the webpage')
}
});
}
function OnSuccess(i,totalrows) {
return function (response) {
if (response.d != "") {
document.getElementById('div' + i).innerHTML = document.getElementById('div' + i).innerHTML + '<br>' + '<br>' + response.d;
numSucceeded++;
if (numSucceeded === totalrows) {
$("#LoadingImage").hide();
}
}
}
}
}
window.onload = GetSQLTable
</script>

Try using .when with an array of your ajax calls. Something like this (simplified to remove the irrelevant bits):
function GetSQLTable() {
//...
var calls = [];
for (var i = 0; i < res.length; i++) {
//..
calls.push($.ajax({
type: "POST",
//..
}));
}
$.when(calls).then(function(d) {
// all done!!!
});

Jquery Ajax Call always returns error

I have a javascript code as below
var xReg = '<region><width>' + $("#txtWidth").val() + '</width> <height>' + $("#txtHeight").val() + '</height><float>' + $("#floats").val() + '</float><contenttype>' + $("#contenttype").val() + '</contenttype><style>' + rgnStyle + '</style></region>';
$.ajax({
type: "POST",
url: "myurl/addRegion",
data: "{pubId: '" + Number($("#pubs").val()) + "',section: '" + $("#sections option:selected").text() + "',layoutW: '" + Number($("#txtLayoutW").val()) + "',layoutH: '" + Number($("#txtLayoutH").val()) + "',bSubReg: '" + Boolean($("#chkSubRegion").is(':checked')) + "',parentRegId: '" + Number(parentRgn) + "',sXmlRegion: '" + xReg.toString() + "'}",
contentType: "application/json; charset=utf-8",
async: false,
dataType: "json",
success: function (result) {
document.body.style.cursor = 'pointer';
if (result.d == -1) {
$("#errMsg").text("Failed to create new region");
}
else {
if ($("#chkSubRegion").is(':checked')) {
$("#regions").append("<option class='ddindent' value='" + result.d + "'>REGION-" + result.d.toString() + "</option>");
} else {
$("#subregions").append("<option class='ddindent' value='" + result.d + "'>SUBREGION-" + result.d.toString() + "</option>");
}
}
},
error: function (result) {
if (result.status == 200 && result.statusText == 'OK') {
if ($("#chkSubRegion").is(':checked')) {
$("#regions").append("<option class='ddindent' value='" + result.d + "'>REGION-" + result.d.toString() + "</option>");
} else {
$("#subregions").append("<option class='ddindent' value='" + result.d + "'>SUBREGION-" + result.d.toString() + "</option>");
}
}
else {
alert("FAILED : " + result.status + ' ' + result.statusText);
}
},
async: true
});
Server code as below
[WebMethod]
public int addRegion(int pubId, string section, int layoutW, int layoutH, bool bSubReg, int parentRegId, string sXmlRegion)
{
string path = Server.MapPath("~");
path = Path.Combine(path, "Published");
path = Path.Combine(path, pubId.ToString());
path = Path.Combine(path, section);
XmlDocument doc = new XmlDocument();
int rgnCount = 0;
try
{
if (!Directory.Exists(path))
{
Directory.CreateDirectory(path);
}
path = Path.Combine(path, "layout.xml");
if (!File.Exists(path))
{
XmlNode docNode = doc.CreateXmlDeclaration("1.0", "UTF-8", null);
doc.AppendChild(docNode);
XmlNode templateNode = doc.CreateElement("layout");
doc.AppendChild(templateNode);
XmlNode xNodeW = doc.CreateElement("width");
xNodeW.AppendChild(doc.CreateTextNode(layoutW.ToString()));
XmlNode xNodeH = doc.CreateElement("height");
xNodeH.AppendChild(doc.CreateTextNode(layoutH.ToString()));
}
else
{
doc.Load(path);
doc.DocumentElement.SelectSingleNode("/layout/width").InnerText = layoutW.ToString();
doc.DocumentElement.SelectSingleNode("/layout/height").InnerText = layoutH.ToString();
}
XmlElement root = doc.DocumentElement;
XmlNode xParent = root;
if (bSubReg)
{
xParent = root.SelectSingleNode("/layout/region[id='" + parentRegId.ToString() + "']");
rgnCount = xParent.SelectNodes("/region").Count;
}
else
{
rgnCount = root.SelectNodes("/Layout/region").Count;
}
rgnCount++;
XmlDocumentFragment docFragment = doc.CreateDocumentFragment();
docFragment.InnerXml = sXmlRegion;
XmlNode xID = doc.CreateElement("id");
xID.AppendChild(doc.CreateTextNode(rgnCount.ToString()));
docFragment.FirstChild.AppendChild(xID);
xParent.AppendChild(docFragment);
doc.Save(path);
return rgnCount;
}
catch (Exception eX)
{
return -1;
}
}
The call is going to server from client. And no issues I could find in server code till last return statement while I debugged it. In the javascript debugging I found that after ajax call is always going to error callback function. Can anyone suggest whats wrong with the code.
Thanks & Appreciate Your Time.

I found the bug in my code there is issue with below lines of code
},
async: true
at the end of error: callback function
I removed the line async: true and it worked