JSON: Get list of JSON Objects

Question

In java how can I pull out the JSON objects enclosed in the "{}"?

I have tried:

JSONObject obj = new JSONObject(jstring);
obj.getJSONArray("fileName");

But it only return the first object. How do I get a list with both objects?

JSON:

[
{
    "fileName": [
        "file1"
    ],
    "date": [
        "8/25/2015 0:00"
    ],
    "time": [
        "7/16/2009 16:51"
    ],
    "id": "1",
    "version_": 1
},
{
    "fileName": [
        "file1"
    ],
    "date": [
        "8/25/2015 0:00"
    ],
    "time": [
        "7/16/2009 16:51"
    ],
    "id": "1",
    "version_": 1
}
]

Mauker · Accepted Answer · 2015-08-27 15:11:50Z

3

Your root JSON is an Array, so first create a JSONArray from your String.

Do this:

JSONArray arr = new JSONArray(jstring);
for (int i = 0; i < arr.length(); i++) { // Walk through the Array.
    JSONObject obj = arr.getJSONObject(i);
    JSONArray arr2 = obj.getJSONArray("fileName");
    // Do whatever.
}

For more info, please refer to the docs on JSONArray and JSONObject.

edited Aug 27, 2015 at 15:11

answered Aug 27, 2015 at 15:05

Mauker

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2 Comments

wwjdm Over a year ago

This is incorrect. You can not convert JSONObject to JSONArray. First line needs to be corrected.

Mauker Over a year ago

Ops. My bad! Done, now it's corrected ;) Thanks for pointing it out. I was typing too fast and forgot to change that from my ctrl + V haha

Pavel Gatnar · Accepted Answer · 2015-08-27 15:02:58Z

-1

You have to directly construct JSONArray from JSON string in this case.

JSONArray arr = new JSONArray(jstring);

answered Aug 27, 2015 at 15:02

Pavel Gatnar

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Comments

Simimmo · Accepted Answer · 2015-08-27 15:04:51Z

-1

JSONArray jsonArray = new JSONArray(jstring);

answered Aug 27, 2015 at 15:04

Simimmo

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1 Comment

Rick Smith Over a year ago

Please edit with more information. Code-only and "try this" answers are discouraged, because they contain no searchable content, and don't explain why someone should "try this". We make an effort here to be a resource for knowledge.

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