GOAL:
I'm trying to validate the user's email address as he/she types.
I'm just using simple regex because I don't want to use any external library. Also if use the regex like in here regex email for java I'm encountering error PatternSyntaxException that's why I prefer simple regex for now.
So I put the TextFormatter and UnaryOperator inside the initialize method.
#FXML
public void initialize()
{
//1. USE UNARY FIRST TO MAKE FILTER BEFORE USING TEXTFORMATTER
UnaryOperator <TextFormatter.Change> filterEmail = (change ->{
if(change.getControlNewText().matches("^(.+)#(.+)$*"))
{
lblEmailError.setVisible(false);
txtEmailAdd.setBorder(null);
return change;
}
else
{
lblEmailError.setText("Invalid Email");
lblEmailError.setVisible(true);
txtEmailAdd.setBorder(new Border(new BorderStroke(Color.RED, BorderStrokeStyle.SOLID, new CornerRadii(3), new BorderWidths(2), new Insets(-2))));
return null;
}
});
TextFormatter <String> tf = new TextFormatter<String>(filterEmail);
txtEmailAdd.setTextFormatter(tf);
}
But as long as the FXML loads I can't type anymore in the TextField and can't be edited anymore. I can't type anything. Maybe there is something wrong with my condition or I'm wrong putting it inside the initialize method.
I'm lost. I have already dug the web on how to validate email in java using regex.
like this Java regex email
I'm also using SceneBuilder to build the fxml. Any help will do thanks in advance.
This question already has answers here:
Safely turning a JSON string into an object
(28 answers)
Closed 7 years ago.
I want to parse a JSON string in JavaScript. The response is something like
var response = '{"result":true,"count":1}';
How can I get the values result and count from this?
The standard way to parse JSON in JavaScript is JSON.parse()
The JSON API was introduced with ES5 (2011) and has since been implemented in >99% of browsers by market share, and Node.js. Its usage is simple:
const json = '{ "fruit": "pineapple", "fingers": 10 }';
const obj = JSON.parse(json);
console.log(obj.fruit, obj.fingers);
The only time you won't be able to use JSON.parse() is if you are programming for an ancient browser, such as IE 7 (2006), IE 6 (2001), Firefox 3 (2008), Safari 3.x (2009), etc. Alternatively, you may be in an esoteric JavaScript environment that doesn't include the standard APIs. In these cases, use json2.js, the reference implementation of JSON written by Douglas Crockford, the inventor of JSON. That library will provide an implementation of JSON.parse().
When processing extremely large JSON files, JSON.parse() may choke because of its synchronous nature and design. To resolve this, the JSON website recommends third-party libraries such as Oboe.js and clarinet, which provide streaming JSON parsing.
jQuery once had a $.parseJSON() function, but it was deprecated with jQuery 3.0. In any case, for a long time, it was nothing more than a wrapper around JSON.parse().
WARNING!
This answer stems from an ancient era of JavaScript programming during which there was no builtin way to parse JSON. The advice given here is no longer applicable and probably dangerous. From a modern perspective, parsing JSON by involving jQuery or calling eval() is nonsense. Unless you need to support IE 7 or Firefox 3.0, the correct way to parse JSON is JSON.parse().
First of all, you have to make sure that the JSON code is valid.
After that, I would recommend using a JavaScript library such as jQuery or Prototype if you can because these things are handled well in those libraries.
On the other hand, if you don't want to use a library and you can vouch for the validity of the JSON object, I would simply wrap the string in an anonymous function and use the eval function.
This is not recommended if you are getting the JSON object from another source that isn't absolutely trusted because the eval function allows for renegade code if you will.
Here is an example of using the eval function:
var strJSON = '{"result":true,"count":1}';
var objJSON = eval("(function(){return " + strJSON + ";})()");
alert(objJSON.result);
alert(objJSON.count);
If you control what browser is being used or you are not worried people with an older browser, you can always use the JSON.parse method.
This is really the ideal solution for the future.
If you are getting this from an outside site it might be helpful to use jQuery's getJSON. If it's a list you can iterate through it with $.each
$.getJSON(url, function (json) {
alert(json.result);
$.each(json.list, function (i, fb) {
alert(fb.result);
});
});
If you want to use JSON 3 for older browsers, you can load it conditionally with:
<script>
window.JSON ||
document.write('<script src="//cdnjs.cloudflare.com/ajax/libs/json3/3.2.4/json3.min.js"><\/scr'+'ipt>');
</script>
Now the standard window.JSON object is available to you no matter what browser a client is running.
The following example will make it clear:
let contactJSON = '{"name":"John Doe","age":"11"}';
let contact = JSON.parse(contactJSON);
console.log(contact.name + ", " + contact.age);
// Output: John Doe, 11
If you pass a string variable (a well-formed JSON string) to JSON.parse from MVC #Viewbag that has doublequote, '"', as quotes, you need to process it before JSON.parse (jsonstring)
var jsonstring = '#ViewBag.jsonstring';
jsonstring = jsonstring.replace(/"/g, '"');
You can either use the eval function as in some other answers. (Don't forget the extra braces.) You will know why when you dig deeper), or simply use the jQuery function parseJSON:
var response = '{"result":true , "count":1}';
var parsedJSON = $.parseJSON(response);
OR
You can use this below code.
var response = '{"result":true , "count":1}';
var jsonObject = JSON.parse(response);
And you can access the fields using jsonObject.result and jsonObject.count.
Update:
If your output is undefined then you need to follow THIS answer. Maybe your json string has an array format. You need to access the json object properties like this
var response = '[{"result":true , "count":1}]'; // <~ Array with [] tag
var jsonObject = JSON.parse(response);
console.log(jsonObject[0].result); //Output true
console.log(jsonObject[0].count); //Output 1
The easiest way using parse() method:
var response = '{"a":true,"b":1}';
var JsonObject= JSON.parse(response);
this is an example of how to get values:
var myResponseResult = JsonObject.a;
var myResponseCount = JsonObject.b;
JSON.parse() converts any JSON String passed into the function, to a JSON object.
For better understanding, press F12 to open the Inspect Element of your browser, and go to the console to write the following commands:
var response = '{"result":true,"count":1}'; // Sample JSON object (string form)
JSON.parse(response); // Converts passed string to a JSON object.
Now run the command:
console.log(JSON.parse(response));
You'll get output as Object {result: true, count: 1}.
In order to use that object, you can assign it to the variable, let's say obj:
var obj = JSON.parse(response);
Now by using obj and the dot(.) operator you can access properties of the JSON Object.
Try to run the command
console.log(obj.result);
Without using a library you can use eval - the only time you should use. It's safer to use a library though.
eg...
var response = '{"result":true , "count":1}';
var parsedJSON = eval('('+response+')');
var result=parsedJSON.result;
var count=parsedJSON.count;
alert('result:'+result+' count:'+count);
If you like
var response = '{"result":true,"count":1}';
var JsonObject= JSON.parse(response);
you can access the JSON elements by JsonObject with (.) dot:
JsonObject.result;
JsonObject.count;
I thought JSON.parse(myObject) would work. But depending on the browsers, it might be worth using eval('('+myObject+')'). The only issue I can recommend watching out for is the multi-level list in JSON.
An easy way to do it:
var data = '{"result":true,"count":1}';
var json = eval("[" +data+ "]")[0]; // ;)
If you use Dojo Toolkit:
require(["dojo/json"], function(JSON){
JSON.parse('{"hello":"world"}', true);
});
As mentioned by numerous others, most browsers support JSON.parse and JSON.stringify.
Now, I'd also like to add that if you are using AngularJS (which I highly recommend), then it also provides the functionality that you require:
var myJson = '{"result": true, "count": 1}';
var obj = angular.fromJson(myJson);//equivalent to JSON.parse(myJson)
var backToJson = angular.toJson(obj);//equivalent to JSON.stringify(obj)
I just wanted to add the stuff about AngularJS to provide another option. NOTE that AngularJS doesn't officially support Internet Explorer 8 (and older versions, for that matter), though through experience most of the stuff seems to work pretty well.
If you use jQuery, it is simple:
var response = '{"result":true,"count":1}';
var obj = $.parseJSON(response);
alert(obj.result); //true
alert(obj.count); //1
I'm retrieving a list of Work Items using the VSTS API and would like to display them on my web app. I can successfully return a list of the work items in the format below:
{"count":1,"value":[{"id":246,"rev":4,"fields":{"System.Id":246,"System.State":"New","System.Title":"test1"},"url":"https://example.visualstudio.com/_apis/wit/workItems/246"}]}
I have tried a regular expression to get the values from this HTTP response with the following code:
HttpResponseMessage getWorkItemsHttpResponse = client.GetAsync("_apis/wit/workitems?ids=" + ids + "&fields=System.Id,System.Title,System.State&asOf=" + workItemQueryResult.asOf + "&api-version=2.2").Result;
if (getWorkItemsHttpResponse.IsSuccessStatusCode)
{
result = getWorkItemsHttpResponse.Content.ReadAsStringAsync().Result;
// Regular expression to extract work item values to display
string parseWI = result.ToString();
var match = Regex.Match(parseWI, "\"System.ID\": (.*)");
workItemsToDisplay = (match.Groups[1].Value);
}
}
}
}
return workItemsToDisplay;
}
This is refusing to return anything though and leaves the textbox I display the workItemsToDisplay in empty. I'm not familiar with regular expressions and i'm sure this is where the issue stems from. Not sure if Microsoft already has sample code to construct a display of Work Items from the response.
Don't use a regex. That's JSON, use a JSON parsing library (JSON.Net is the de facto standard in the .NET world) and then you can easily retrieve specific fields.
I have following JSON format in response body
[
{
"Name" : "Prashant",
"City" : "Sydney"
},
{
"Name" : "Yogi",
"City" : "London"
}
]
What is the better way for checking if this array has any records and if yes give me "Name" for first array index. I am using jp#gc JSON extractor plugin for jMeter.
Is it possible to parse this using a plugin or do I need to do it using regular expressions?
Using Ubik Load Pack JSON plugin for JMeter which is part of JMeter since version 3.0 (donated plugin) and called JSON Extractor, you can do it:
Test Plan overview:
ULP_JSON PostProcessor:
If Controller:
And here is the run result:
So as you can see it is possible with plain JMeter
If you're looking to learn JMeter, this book by 3 developers of the project will help you.
I am not sure about your plugin but if it supports JSON path expressions it should be possible.
Try with this expression: $.[0].Name.
This is the plugin I use: http://jmeter-plugins.org/wiki/JSONPathExtractor/ and given expression works with it.
You can find more about JSON Path expressions here: http://goessner.net/articles/JsonPath/index.html#e2.
Working with JSON in JMeter is not quite easy as JMeter was designed long ago before JSON was invented.
There are some extensions however that make life easier:
http://www.ubik-ingenierie.com/blog/extract-json-content-efficiently-with-jmeter-using-json-path-syntax-with-ubik-load-pack/
We can add a regular expression extractor for fetching the value from the response.
Like This:
If possible, always use Regular Expression Extractor. Try to avoid JSON / XPATH / Other extractors. They might look easy to use. But they consume more memory and time. It will affect the performance of your test plan.
source: http://www.testautomationguru.com/jmeter-response-data-extractors-comparison/
Rest Get service sample:
{
"ObjectIdentifiers": {
"internal": 1,
"External1": "221212-12121",
"External3": "",
"Name": "koh"
},
"PartyType": "naturalPerson",
"NaturalPerson": {
"idNo": "221212-12121",
"Title": "Mr",
"Name": "koh",
"FirstName": "",
We had a similar requirement in our project for parsing json responses using jmeter. The requirement was to validate all the fields in the json response and the expected values of field would be provided from external data source.
I found the JSR223 PostProcessor quite usefule in this case as we are able to implement Groovy scripts with this. it comes as a default plugin with the recent Jmeter version
Edit:
Below is the code snippet:
//get the JSON response from prev sampler
String getResponse = prev.getResponseDataAsString();
//parse the response and convert to string
JSONParser parser = new JSONParser(JSONParser.MODE_JSON_SIMPLE);
String parResponse = parser.parse(getResponse);
String preResponse = parResponse.toString();
JsonObject NaturalPerson = JsonObject.readFrom(preResponse);
//replace all commas with a semi-colon
String csvResponse = preResponse.replaceAll(",", ";");
//log response to file
logFileName = "C:/apache-jmeter-5.1.1/Web_Service_Output.csv";
BufferedWriter outLog = new BufferedWriter(new FileWriter(logFileName, true));
outLog.write(csvResponse + "\n");
outLog.close();
My question is simple but i can not find exact solution. All articles have gor below a line of code:
collection.findOne({hello:'world_no_safe'});
Above codes does work and returns to me undefined error.But it is existed. Anyway, My exact solution is above. Please help me and teach me how to use regex by searching inside of the json api. ı want to use %mysearch data% as a regex expression. ı want to make text search which is used all sentences in json.
For example : i have a json:
[{"data":"Andreas Kollegger explains what kinds of questions you can answer with a graph database. It's not only the big sites that "},{"data":"X explains what kinds of questions you can answer with a graph database. It's not only the big sites that "}]
if i use this expression: collection.findOne({hello:'%Andreas%'});
it has to return first data. Below a real sample from my project.
var mongo = require('mongodb');
var Server = mongo.Server;
var Db = mongo.Db;
var server = new Server('ds053479.mongolab.com', 53479, {auto_reconnect : true});
var db = new Db('orient', server);
db.open(function(err, client) {
client.authenticate('testname', 'fsfsff', function(err, success) {
var collection = db.collection('Models');
collection.insert({Name:'test1'});
// Fetch the document
collection.findOne({Name:'%world_no_safe%'});
});
According to the MongoDB Manual you can use the $regex operator:
collection.findOne({Name: { $regex: '.*world_no_safe.*' }});