Convert JSON with changeable array keys to Java object

Question

I receive JSON data from web service and I would like to convert it into Java object. The ways are many, however I don't find any that could deal with changeble array keys that I receive in the json.

JSON example:

{
    "total": 2,
    "last": "AAAI9Zgh",
    "results": {
        "67701510/2/1150671": {
            "attributes": {
              "200": "11444413213123",
              "201": "Frank"     
            },
            "id": "67701510/2/1150671"
        },
       "76701410/3/1330671": {
            "attributes": {
              "200": "11666613213123",
              "201": "Mary"
            },
            "id": "76701410/3/1330671"
        }
    }
}

In the results there are 2 objects. Name of each object is an ID of the object so it is changeble. The method like this

return new Gson().fromJson(json, clazz);

is not working.

I would like to reach attributes and id data in each object.

Could anyone give some method to do so?

Great! That works! Please open an answer so that I could "+" it. — Kirill
– Kirill, Commented May 4, 2017 at 14:08

Lyubomyr Shaydariv · Accepted Answer · 2017-05-04 14:24:50Z

1

Well if you have dynamic keys in your JSON, they can be mapped as Map<String, Object>.

Let's say you have a class Result that wraps the Results attributes, you just need to use Map<String, Result> in your GSON mapping.

edited May 4, 2017 at 14:24

Lyubomyr Shaydariv

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answered May 4, 2017 at 14:12

cнŝdk

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Comments

galusben · Accepted Answer · 2017-05-04 14:01:40Z

0

You could use jackson a java library and convert the JSON string to java Map.

ObjectMapper mapper = new ObjectMapper()
Map parsedJson = mapper.readValue(json,Map.class)

Then the parsedJson variable will be a Map containing the parsed json.

Sorry for not showing example in GSON, I am less familiar with this library.

answered May 4, 2017 at 14:01

galusben

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