Tutorial by Examples: json

Consider the following JSON string: { "title": "test", "content": "Hello World!!!", "year": 2016, "names" : [ "Hannah", "David", "Steve" ] } This JSON object can...

Create the JSONObject using the empty constructor and add fields using the put() method, which is overloaded so that it can be used with different types: try { // Create a new instance of a JSONObject final JSONObject object = new JSONObject(); // With put you can add a name/va...

// Create a new instance of a JSONArray JSONArray array = new JSONArray(); // With put() you can add a value to the array. array.put("ASDF"); array.put("QWERTY"); // Create a new instance of a JSONObject JSONObject obj = new JSONObject(); try { // Add the JSONAr...

If you need to produce a JSON string with a value of null like this: { "name":null } Then you have to use the special constant JSONObject.NULL. Functioning example: jsonObject.put("name", JSONObject.NULL);

internal class Sequence{ public string Name; public List<int> Numbers; } // ... string rawJSON = "{\"Name\":\"Fibonacci Sequence\",\"Numbers\":[0, 1, 1, 2, 3, 5, 8, 13]}"; Sequence sequence = JsonConvert.DeserializeObject<Seque...

The JSONSerialization class is built into Apple's Foundation framework. 2.2 Read JSON The JSONObjectWithData function takes NSData, and returns AnyObject. You can use as? to convert the result to your expected type. do { guard let jsonData = "[\"Hello\", \"JSON\"]&q...

import json d = { 'foo': 'bar', 'alice': 1, 'wonderland': [1, 2, 3] } json.dumps(d) The above snippet will return the following: '{"wonderland": [1, 2, 3], "foo": "bar", "alice": 1}'

import json s = '{"wonderland": [1, 2, 3], "foo": "bar", "alice": 1}' json.loads(s) The above snippet will return the following: {u'alice': 1, u'foo': u'bar', u'wonderland': [1, 2, 3]}

6 Fetch request promises initially return Response objects. These will provide response header information, but they don't directly include the response body, which may not have even loaded yet. Methods on the Response object such as .json() can be used to wait for the response body to load, then p...

The JSON.parse() method parses a string as JSON and returns a JavaScript primitive, array or object: const array = JSON.parse('[1, 2, "c", "d", {"e": false}]'); console.log(array); // logs: [1, 2, "c", "d", {e: false}]

var date1 = new Date(); date1.toJSON(); Returns: "2016-04-14T23:49:08.596Z"

HTTPGetJSON performs an HTTP request to the specified URL and returns a jsonq.JsonQuery object for use in the alert template. Example: template example { {{ $ip := 8.8.8.8 }} {{ $whoisURL := printf "http://whois.arin.net/rest/ip/%s" $ip }} {{ $whoisJQ := $.HTTPGetJSON $who...

If you need to create a JSONObject and put data in it, consider the following example: // Create a new javax.json.JSONObject instance. JSONObject first = new JSONObject(); first.put("foo", "bar"); first.put("temperature", 21.5); first.put("year", 2016);...

If you need to get data from a JSONObject, consider the following example: String json = "{\"foo\":\"bar\",\"temperature\":21.5,\"year\":2016,\"message\":{\"Hello\":\"world\"},\"months\":[\"January\",\&qu...

The json_decode() function takes a JSON-encoded string as its first parameter and parses it into a PHP variable. Normally, json_decode() will return an object of \stdClass if the top level item in the JSON object is a dictionary or an indexed array if the JSON object is an array. It will also retur...

The json_encode function will convert a PHP array (or, since PHP 5.4, an object which implements the JsonSerializable interface) to a JSON-encoded string. It returns a JSON-encoded string on success or FALSE on failure. $array = [ 'name' => 'Jeff', 'age' => 20, 'active' => ...

Given some JSON file "foo.json" like: {"foo": {"bar": {"baz": 1}}} we can call the module directly from the command line (passing the filename as an argument) to pretty-print it: $ python -m json.tool foo.json { "foo": { "bar...

When json_encode or json_decode fails to parse the string provided, it will return false. PHP itself will not raise any errors or warnings when this happens, the onus is on the user to use the json_last_error() and json_last_error_msg() functions to check if an error occurred and act accordingly in ...

jQuery makes handling jSON responses painless, but a bit more work is required when a given request wishes you to send data in JSON format: $.ajax("/json-consuming-route", { data: JSON.stringify({author: {name: "Bullwinkle J. Moose", ...

Lets assume you have a class called Person with just name private class Person { public String name; public Person(String name) { this.name = name; } } Code: Gson g = new Gson(); Person person = new Person("John"); System.out.println(g.toJson(person)); /...