Converting string to json object using json.simple

Question

I am using org.json.simple.JSONObject. I want to convert string to Json object.

String value=request.getParameter("savepos");
JSONObject jsonObject = (JSONObject) JSONValue.parse(value);

It doesn't work. Why?

"But no success" doesn't tell us any information about the failure mode. What's the value of `value`? What happens with the code you've tried? — Jon Skeet, Jun 10 '15 at 13:07
how to convert from Java object ( Sample s = new Sample()) to JSON string? — Ghost Rider, Oct 24 '17 at 10:10
https://stackoverflow.com/questions/5245840/how-to-convert-jsonstring-to-jsonobject-in-java/59175182#59175182 — Anzar Ansari, Dec 04 '19 at 12:11

score 67 · Accepted Answer · edited Jun 10 '15 at 14:40

67

Try this:

JSONParser parser = new JSONParser();
JSONObject json = (JSONObject) parser.parse(stringToParse);

edited Jun 10 '15 at 14:40

Seki

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answered Jun 10 '15 at 13:07

Shailesh Yadav

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19

Since There are Multiple JSONParser libraries, Library name would be helpful – Menuka Ishan May 05 '17 at 11:13
2

how to convert from Java object ( Sample s = new Sample()) to JSON string? – Ghost Rider Oct 24 '17 at 10:10
here json.simple Parser is used, I guess. – Mukit09 Sep 01 '19 at 04:31
1

@MenukaIshan You can import json-simple's parser from `org.json.simple.parser.JSONParser` – ado387 Jul 14 '21 at 11:48
1

Why are all the examples so limited and incomplete? No import namespace included, the method seems to require a try-catch block, no example how to transfer back to string... Thanks for this idea, but it could be so much more helpful if you simply completed the thought... – barrypicker Sep 12 '21 at 19:27

score 7 · Answer 2 · answered Jun 10 '15 at 13:08

7

JSONParser parser = new JSONParser();
JSONObject json = (JSONObject) parser.parse(value);

should do the work.

answered Jun 10 '15 at 13:08

Arthur Eirich

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score 1 · Answer 3 · answered Dec 04 '19 at 12:13

Converting String to Json Object by using org.json.simple.JSONObject

private static JSONObject createJSONObject(String jsonString){
    JSONObject  jsonObject=new JSONObject();
    JSONParser jsonParser=new  JSONParser();
    if ((jsonString != null) && !(jsonString.isEmpty())) {
        try {
            jsonObject=(JSONObject) jsonParser.parse(jsonString);
        } catch (org.json.simple.parser.ParseException e) {
            e.printStackTrace();
        }
    }
    return jsonObject;
}

score -2 · Answer 4 · answered Jan 06 '21 at 19:40

-2

In the newer com.github.cliftonlabs.json_simple the code is the following:

JsonObject obj = Jsoner.deserialize(responseString, new JsonObject());

As documented on the project's API docs

answered Jan 06 '21 at 19:40

Kartik Chugh

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Converting string to json object using json.simple

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