Transform JSONArray into array of JSONObject

Question

I have JSONArray as below :

[["title","details"],["abc","xyz"],["abc2","xyz2"]]

How to transform into Array of JSONObject as below using Java /JavaScript?

[ { 'title': abc, 'details':xyz,}, {'title': abc2, 'details':xyz2}]

• Bergi: Is it really java you want to use???
• AzizSM: Yes using existing Java library form org.json or jQuery.
• Bergi: jQuery is no java library!!!1!11

Answer 1

Below code was modified from the solution here to allow multiple arrays of values to be passed.

function makeObject(keys, array) {
 var output = [];
 for (var o = 0; o < array.length; o++) {
 var object = {};
 for (var i = 0; i < array[o].length; i ++ ) {
 object[keys[i]] = array[o][i];
 }
 output.push(object);
 }
 return output;
}
// input array
var array = [["title","details"],["abc","xyz"],["abc2","xyz2"]]; 
// extract keys leaving only values in array
var keys = array.shift();
// build object
var output = makeObject(keys, array);

Example: http://jsfiddle.net/u54tT/1/

• AzizSM: Thanks man, very helpful answer. I was looking around for JQuery implementation and didn't notice that JS still able to transform into json.

Answer 2

I have found a workaround for this for now. Still looking for build in function or concrete implementation on this.

String inputStr = "[[\"title\",\"details\"],[\"abc\",\"xyz\"],[\"abc2\",\"xyz2\"]]";
try {
 JSONArray inputArray = new JSONArray(inputStr);
 JSONArray outputArray = new JSONArray();
 for (int i = 0; i < inputArray.length(); i++) {
 JSONArray inArr = inputArray.getJSONArray(i);
 for (int j = 0; j < inArr.length(); j++) {
 if (i != 0) {
 outputArray.put(new JSONObject().put(
 inputArray.getJSONArray(0).getString(j), inArr.get(j)));
 }
 }
 }
 System.out.println("outputArray = " + outputArray.toString());
} catch (JSONException jse) {
 System.out.println("jse = " + jse.toString());
}

Output:

outputArray = [{"title":"abc"},{"details":"xyz"},{"title":"abc2"},{"details":"xyz2"}]

Answer 3

If I understood the task correctly there no method that will this job since it seems to be a bit non-trivial case. So you should write your own transformation..

Answer 4

Is this what you are looking for ?

jQuery.parseJSON( json ) Returns: Object

Description: Takes a well-formed JSON string and returns the resulting JavaScript object. http://api.jquery.com/jQuery.parseJSON/

• AzizSM: I'm looking to parse array. Please refer to question above.