We Keep Coding

How to call variable from java inside the js in webview

I am filling the user name box automaticly in webview application. But ı need to fill the blanks with wariable which defined in java code here is my code. I want to use variable in my java code instade of "PASS" and "NAME"
javascript:
document.getElementById('horde_user').value='NAME';" +"javascript:document.getElementById('horde_pass').value='PASS';"
java:
final String js = "javascript:document.getElementById('horde_user').value='NAME';" +"javascript:document.getElementById('horde_pass').value='PASS';"+"javascript:documentgetElementsByName('login_button')[0].click()";
webview.setWebViewClient(new WebViewClient() {
public void onPageFinished(WebView view, String url){
if(Build.VERSION.SDK_INT >= 19){
view.evaluateJavascript(js, new ValueCallback<String>() {
#Override
public void onReceiveValue(String s) {
}
});
}
}
});

I recommend you to create a javascript function like :
function login(NAME, PASS)
{
document.getElementById('horde_user').value=pass;
document.getElementById('horde_pass').value=id;
document.getElementsByName('login_button')[0].click();
}
And then from your app code
String id = "myid"; //Get val from the dialog
String pass = "mypass"; //Get val from the dialog
webview.loadUrl("javascript:login('"+NAME+"','"+PASS+"')");
if you need call java from js you can folow this post
Hope it helps ;)

How to load with jquery json data from a backing bean in a custom JSF component?

In short, what is the best way in JSF 2.2 to load json data from a backing bean into a javascript prog that runs in a browser.
I'm porting a dirty hacked iframed visjs network graph to JSF 2.2 - Primefaces 6.1. We have all special tags in a jsf tag library as custom UiComponent's in a jar module. I added a new graph tag, an extended UiComponentBase class, to the tag library and put all visjs javascript files with #ResourceDependency to the class. The tag loads fine, but jquery try to open a url to load json formatted graph coordinates:
$.ajax({
url: "/ajax/getNetwork",
type: "POST",
data: "",
dataType: "json",
success: showNetwork,
error: showError
});
On the old iframe solution, visjs load all data via this url.
I read some things about a single xhtml page with an <h:outputText>, a servlet or a JAXRS rest service endpoint, but these solutions does not fit into a taglibrary and must be configurated in the web.xml of the web project. Is there a way to do it with ajax events, or an ajaxBehavior in a tag library?
Thanks in advance.

The graph UiComponent in the taglib works now as expected. A extended datamodel is filled in a backing bean, similar like the lazy datamodel of the primefaces datatable. The jQuery url request from the client side in the web browser is catched with a custom PhaseListener. There was no way to access the UiComponent from the PhaseListener, because the UiViewRoot component tree was empty. So I put the datamodel in the graph UiComponent class into the SessionMap and can access the datamodel in the PhaseListener. I'm not sure that is the best way, to do this. Here is the custom PhaseListener:
public class GraphPhaseListener implements PhaseListener {
private TopologyModel topoModel;
private PhaseId phaseId = PhaseId.RENDER_RESPONSE;
#Override
public void beforePhase(PhaseEvent event) {
FacesContext context = event.getFacesContext();
Object obj = context.getExternalContext().getRequest();
if(!(obj instanceof HttpServletRequest)) {
return;
}
HttpServletRequest request = (HttpServletRequest) obj;
if(!("true").equals(request.getHeader("networkAjax")) || !request.getMethod().equals("POST")) {
return;
}
Map<String, Object> sessionMap = event.getFacesContext().getExternalContext().getSessionMap();
Object object = sessionMap.get(EnhancedGraphRenderer.GRAPH_TOPOLOGIE_KEY);
if(object == null || !(object instanceof TopologyModel)) {
return;
}
topoModel = (TopologyModel) object;
String graphAction = request.getHeader("graphAction");
String actionResponse = "";
if(graphAction==null) {
return;
}
switch(graphAction) {
case "getNetwork":
actionResponse = topoModel.getJsonNetwork();
break;
case "getNodeTypes":
actionResponse = topoModel.getJsonNodeTypes();
//actionRespoonse = topoModel.getFromAction("{node_type:switch, node_id: 2, request: children}")
break;
default:
actionResponse = "{}";
}
HttpServletResponse response = (HttpServletResponse) context.getExternalContext().getResponse();
try {
PrintWriter output = response.getWriter();
output.print(actionResponse);
context.responseComplete();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
}
#Override
public void afterPhase(PhaseEvent arg0) {
}
#Override
public PhaseId getPhaseId() {
return phaseId;
}
}
I hope that helps others, sugestions for improvement are welcome.

In Spring Boot ,During click event Html Page Redirect and Loading the values in Dropdown components using Jquery /Thymeleaf

I am using STS 3.9.0 Tool, my project is based on Spring Boot, Thymeleaf, MySQL, Html-Bootstrap and JQuery.
In Spring Boot, during a click event the Html page needs to redirect to another page and load the dynamically generated values in Dropdown components using Jquery or Thymeleaf.
Explanation
HTML click event to call #Controller to redirecting another Html page:
#RequestMapping(value = "/getflat", method = RequestMethod.GET)
public String propertyRegistration() {
return "FlatReg";
}
The URL will Be localhost:8080/getflat It will rediect to FlatReg.html, which is located in template folder.
and during load time, again hit #RestController URL to fetch the data from the DB and Load the data to Dropdown Controller
#PostMapping("/flatreg/saveflat")
public ResponseMsg doSaveFlatDetails() {
ResponseMsg responseMsg = new ResponseMsg();
try {
// My DB call Goes Here
} catch (Exception e) {
// TODO: handle exception
}
return responseMsg;
}
ResponseMsg class Like
public class ResponseMsg {
private String status;
private Object dataObj;
public ResponseMsg() {
}
public ResponseMsg(String status, Object dataObj) {
super();
this.status = status;
this.dataObj = dataObj;
}
public String getStatus() {
return status;
}
public void setStatus(String status) {
this.status = status;
}
public Object getDataObj() {
return dataObj;
}
public void setDataObj(Object dataObj) {
this.dataObj = dataObj;
}
}
I don't know how to achieve this. Is there any other way? Thanks in advance.

You have two ways to achieve this.
Before rendering the page from the Controller method propertyRegistration(), add all the data you need to display in the page FlatReg page like so.
#RequestMapping(value = "/getflat", method = RequestMethod.GET)
public ModelAndView propertyRegistration() {
ModelAndView modelAndView = new ModelAndView("FlatReg");
modelAndView.addObject("data", service.getData()); //Get data from your service layer and set it in the ModelAndView to be later retreived in your FlatReg page.
return "FlatReg";
}
The second way would be to load the "FlatReg" page as you are doing right now and then using Ajax call your Controller method doSaveFlatDetails to get the required data. Check this link on how to make an ajax call.
Hope this helps.

C# ASP.Net autocomplete with Javascript/Json post not working

I am currently working with a c# asp.net usercontrol in which I need a functional autocomplete.
The script looks like it wants to run, as you can see; the progress bar spins, but it ALWAYS comes back 'Error'. I'm not sure what to do from here. I followed at least 5 different tutorials to get this working; the code mimics the code found here; but it doesn't seem to work when all is said and done. What am I missing? Any suggestions to get me where I need to be would be much appreciated.
If any more information is needed let me know, but the entire code can be found below.
HTML/Javascript
<%# Control Language="C#" AutoEventWireup="true" CodeBehind="Search Textbox.ascx.cs" Inherits="StagingApplication.Search.Search_Textbox" %>
<link href="../css/styleCustomPages.css" rel="stylesheet" />
<link href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.1/themes/base/jquery-ui.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.1/jquery-ui.min.js"></script>
<script type="text/javascript">
$(document).ready(function () {
SearchText();
});
function SearchText() {
$(".autosuggest").autocomplete({
source: function (request, response) {
$.ajax({
type: "POST",
contentType: "application/json; charset=utf-8",
url: "Search_Textbox.aspx/GetAutoCompleteData",
data: "{'searchText':'" + document.getElementById('txtSearch').value + "'}",
dataType: "json",
success: function (data) {
response(data.d);
},
error: function (result) {
alert('Error' );
}
});
}
});
}
</script>
<div class="ui-widget">
<label for="tbAuto">Enter UserName: </label>
<input type="text" id="txtSearch" class="autosuggest" />
</div>
C# Code Behind
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.SqlClient;
using System.Web.Services;
using System.Web.Script.Services;
namespace StagingApplication.Search
{
public partial class Search_Textbox : System.Web.UI.UserControl
{
#region Declarations
static string dbSearch = "db string";
#endregion
protected void Page_Load(object sender, EventArgs e)
{ }
#region Methods and Functions
[WebMethod, ScriptMethod]
public static List<string> GetAutoCompleteData(string searchText)
{
List<string> result = new List<string>();
using (SqlConnection con = new SqlConnection(dbSearch))
{
using (SqlCommand cmd = new SqlCommand("SELECT TOP 1000 [SearchTerm] FROM [Search].[dbo].[Cache] where AutoCompleteTerm = 0 and SearchTerm LIKE #SearchText + '%';", con))
{
con.Open();
cmd.Parameters.AddWithValue("#SearchText", searchText);
SqlDataReader dr = cmd.ExecuteReader();
while (dr.Read())
{
result.Add(dr["SearchTerm"].ToString());
}
return result;
}
}
}
}
}

cmd.Parameters.AddWithValue("#SearchText", searchText);
Variable searchText doesn't exist, because:
Your function begins with this:
public static List<string> GetAutoCompleteData(string username)
It should be:
public static List<string> GetAutoCompleteData(string searchText)
You forgot to update username to searchText.

In the aspx page, you need to declare a WebMethod which will call the code in the user control. This is how I do it in one of our sites:
[WebMethod]
public static WebMethodReturn<IEnumerable> GetWatchboxes()
{
return AddOns_WatchboxAdmin.GetWatchboxes();
}
...making sure in jQuery to call the page method url of the aspx page not the control.
My answer here may help a little bit too, particularly the recommendation to debug web traffic with Fiddler.
Its important to note that your "Error" string is in the jQuery error block. That means it's probably a transport error or some sort of error in jQuery. My guess is 404 because you don't have a page method in the aspx page only in the user control. This error block won't catch server side exceptions. I return a little wrapper class with a Data property and an Error property; I put any exception string into the Error property otherwise I leave it null. I check this string clientside. This is optional, just a little tip that jQuery knows nothing about .NET exceptions - not that I believe an exception is the problem here.
The ScriptMethod attribute is needed in ASMX web services in order to return JSON but for reasons unknown to me you don't need it in page methods.
You certainly do not need to be doing any manual serialisation to JSON as instructed in another answer. If called correctly by jQuery, the example I have given will return JSON with no further work needed.
So, to summarise, put this into your aspx.cs:
[WebMethod]
public static List<string> GetAutoCompleteData(string searchText)
{
and call and return the results of the same function in the instance of the user control on your aspx page (or make the function public static in the user control). Inspect the client call and server response in Fiddler in case of any problems.

Since you're expecting JSON to be returned, you may need to try something like this:
Add the following declaration:
using System.Web.Script.Serialization;
Then perform the following on your List<string> result variable:
JavaScriptSerializer serializer = new JavaScriptSerializer();
serializer.MaxJsonLength = Int32.MaxValue; // optional
return serializer.Serialize(result);
UPDATE - here's a more complete solution for outputting your data to JSON:
public static string GetDataTableToJSONString(DataTable table) {
List<Dictionary<string, object>> list = new List<Dictionary<string, object>>();
foreach (DataRow row in table.Rows) {
Dictionary<string, object> dict = new Dictionary<string, object>();
foreach (DataColumn col in table.Columns) {
dict[col.ColumnName] = row[col];
}
list.Add(dict);
}
JavaScriptSerializer serializer = new JavaScriptSerializer();
serializer.MaxJsonLength = Int32.MaxValue;
return serializer.Serialize(list);
}
public static List<string> GetAutoCompleteData(string searchText) {
string sql = "SELECT TOP 1000 [SearchTerm] FROM [Search].[dbo].[Cache] " +
"where AutoCompleteTerm = 0 and SearchTerm LIKE #SearchText + '%';";
using (SqlConnection con = new SqlConnection(dbSearch)) {
con.Open();
using (SqlCommand cmd = new SqlCommand(sql, con)) {
cmd.Parameters.AddWithValue("#SearchText", searchText);
using (SqlDataAdapter da = new SqlDataAdapter(cmd)) {
using (DataSet ds = new DataSet()) {
da.Fill(ds);
return GetDataTableToJSONString(ds.Tables[0]);
}
}
}
}
}

How can I send complex JavaScript object to ASP.net WebMethod?

I'm trying send my client-side custom object (JavaScript) to ASP.net Web Method. I use jQuery Ajax command to perform this operation.
There a example of my object:
function Customer() {
this.Name = "";
this.Surname = "";
this.Addresses = new Array();
}
I load data with this method:
function buildCurrentCustomer() {
var currentCustomer = new Customer();
/** General Info **/
currentCustomer.Name = $("#Name").val();
currentCustomer.Surname = $("#Surname").val();
currentCustomer.Addresses = new Array();
currentCustomer.Addresses["HOME"] = $("#adHome").val();
currentCustomer.Addresses["OFFICE"] = $("#adOffice").val();
return currentCustomer;
}
And finally I send data with this code:
$.ajax({
type: "POST",
url: "../_layouts/CustomerManager/MasterPage.aspx/SetCustomer",
contentType: "application/json; charset=utf-8",
dataType: "json",
data: "{customer: " + JSON.stringify(currentCustomer) + "}",
cache: false,
success: function (result) {
},
error: function (ex) {
WriteToConsole(ex.responseText);
}
});
My server-side methods is like that:
[WebMethod]
public static bool SetCustomer(CustomerModel Customer)
{
//My code...
}
and my CustomerModel class is like that:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace Common.Model.JavaScriptModel
{
public class CustomerModel
{
/** General Info **/
public string Name {get;set;}
public string Surname {get;set;}
public Dictionary<string, string> Addresses { get; set; }
}
}
The problem is that when I execute Ajax Call server-side method doesn't execute. If I change signature of server-side method in:
public static bool SetCustomer(List<CustomerModel> Customer)
SetCustomer method is executed but the List is empty.
Why have I this problem? Where can I find documentation about this functionality?
Thanks

first, if you use the data like this
data: "{customer: " + JSON.stringify(currentCustomer) + "}",
on the code behind, you need to take the same parameter customer and not Customer, so this
public static bool SetCustomer(CustomerModel Customer) { ... }
needs to be changed to
public static bool SetCustomer(CustomerModel customer) { ... }
second, your Customer object in the javascript is like this if translated to asp.net
string Name;
string Surname;
List<string> Addresses;
but your class in the code behind for Addresses is using
Dictionary<string, string>
thus causing your data from client side can't be parsed in the server side and return an error to the client side, so you need to change your Addresses class to
public List<string> Addresses { get; set; }
and lastly, your code inside buildCurrentCustomer for the Addresses is being set like this
currentCustomer.Addresses = new Array();
currentCustomer.Addresses["HOME"] = $("#adHome").val();
currentCustomer.Addresses["OFFICE"] = $("#adOffice").val();
this will never add a value to Addresses since it's type is an array, but you set the value to it as if it was an object, so if you want to stick to use an array, you need to change it to
currentCustomer.Addresses = new Array();
currentCustomer.Addresses.push($("#adHome").val());
currentCustomer.Addresses.push($("#adOffice").val());
*Note:
use this if you want to use the Addresses as an array, but if you need the Addresses to be an object that contains HOME and OFFICE, I'll Edit the answer
Edit:
perhaps you can use a javascript object like this
currentCustomer.Addresses = {};
currentCustomer.Addresses["Home"] = $("#adHome").val();
currentCustomer.Addresses["Office"] = $("#adOffice").val();
to make the equivalent for Dictionary<string,string> but if it didn't work you could change your Addresses to class too like this
public List<Address> Addresses { get; set; }
and add class Address
public class Address
{
public string Home {get;set;}
public string Office {get;set;}
}
I myself never used a Dictionary myself, so I don't know if it's the same

You can change your source code like this..
AJAX-
data: JSON.stringify({'customer':currentCustomer});
ASP.net Web Method-
[WebMethod]
public static bool SetCustomer(object customer)
{
CustomerModel CM = new CustomerModel();
_Serializer = new JavaScriptSerializer();
_StringBuilder = new StringBuilder();
_Serializer.Serialize(customer, _StringBuilder);
CM = _Serializer.Deserialize<CustomerModel>(_StringBuilder.ToString());
}
Note that you have to initialize _Serializer and the _StringBuilder properties at the top of the page as global variables...
public static JavaScriptSerializer _Serializer;
public static StringBuilder _StringBuilder;