Json Array not properly generated in jsp

Question

I have written jsp code for generating json .But its not generating exact JsonArray. Its like

[{"item":"747"},,{"item":"1617"},]

instead of

[{"item":"747"},{"item":"1617"}].

below is the code

    JSONObject obj = new JSONObject();
    JSONArray ja = new JSONArray();
    obj.put("item", "747");
    ja.put(obj);
    obj = new JSONObject();
    obj.put("item", "1617");
    ja.put(obj);
    out.println(ja);

I tried your code, and works fine. what gson are you using?

Ken de Guzman
– Ken de Guzman

2014-09-03 10:18:24 +00:00
Commented Sep 3, 2014 at 10:18 — Ken de Guzman
– Ken de Guzman, Commented Sep 3, 2014 at 10:18

Jagannath Sabat · Accepted Answer · 2014-09-03 11:06:09Z

2

I have tested your code by using json-simple-1.1.1.jar, worked fine there is no extra , came in output. while testing your code eclipse given one error message like put() method is undefined for the type JSONArray, so i replaced put with add like:

JSONObject obj = new JSONObject();
JSONArray ja = new JSONArray();
obj.put("item", "747");
ja.add(obj);
obj = new JSONObject();
obj.put("item", "1617");
ja.add(obj);
out.println(ja);

Also see Gson

answered Sep 3, 2014 at 11:06

Jagannath Sabat

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