Is there a way to access nested values stored in JSON using Gson?

Question

I have some JSON text from an API that will always come in this format.

{
    "query": {
        "codes": [
            "94016"
        ],
        "country": "US"
    },
    "results": {
        "94016": [
            {
                "postal_code": "94016",
                "country_code": "US",
                "latitude": "37.70580000",
                "longitude": "-122.46190000",
                "city": "Daly City",
                "state": "California",
                "city_en": "Daly City",
                "state_en": "California",
                "state_code": "CA",
                "province": "San Mateo",
                "province_code": "081"
            }
        ]
    }
}

The above code block shows the output for using 94016 as a zip code. I'm only concerned with the city key and the value associated with it. For this example, the only text I want to return is "Daly City" without the quotes.

I created 2 classes for using Gson later in my project with the following code:

public class ZipcodeResponse {
    ZipcodeResult[] results;
}

public class ZipcodeResult {
    String[] ???;
}

My first problem is that I'm not sure what to call my string array (presumably I would name it whatever zip code is searched), since the zipcode will be different each time and the value for it is stored in another class while the program executes. If there's a way I can skip over this value and only get the city, then that would be awesome.

Do you have any control over the format that is returned from the API? — Patrick Mcvay, May 08 '23 at 17:07
Try looking at [Parse a nested JSON using gson](https://stackoverflow.com/q/8233542/16653700). — Alias Cartellano, May 08 '23 at 22:55
Does this answer your question? [Jsonpath with Jackson or Gson](https://stackoverflow.com/questions/34111276/jsonpath-with-jackson-or-gson) — Marcono1234, May 14 '23 at 14:55
If you want to use your approach of having model classes, you can probably change the type of `results` to `Map>`, where the map keys are the ZIP codes, such as `"94016"` — Marcono1234, May 14 '23 at 14:57

Is there a way to access nested values stored in JSON using Gson?

0 Answers0