GSON - Decoding JSON Obtained through Wikipedia API with Dynamic Object Naming

{
"batchcomplete": "uniqueText123",
"continue": {
    "grncontinue": "0.262157292819|0.262157407383|17998004|0",
    "continue": "grncontinue||"
},
"query": {
    "pages": {
        "54321098": {
            "pageid": 54321098,
            "ns": 1,
            "title": "Incredible (movie)",
            "extract": "Incredible is a 2022 action-packed film starring Tom Cruise, Emma Stone and Chris Evans, directed by John Lee Hancock, and based on an original screenplay by Paul Anderson.\n\n"
        }
    }
}

I'm attempting to discover a resolution for interpreting the previously mentioned JSON outcome from the Wikipedia API. The challenge lies in the fact that since the "54321098" object (in this instance) will differ with each API request, I'm struggling to come up with a solution for interpretation.

This is my current progress:

URL url = new URL("https://en.wikipedia.org/w/api.php?action=query&prop=extracts&format=json&exintro=&explaintext=&generator=random&grnnamespace=1");
HttpURLConnection request = (HttpURLConnection) url.openConnection();
request.connect();

JsonElement jsonElement = new JsonParser().parse(new InputStreamReader((InputStream) request.getContent()));
JsonElement page = jsonElement.getAsJsonObject().get("?????");

Usually, I would substitute the "????" part with the object name.

javajsongsonwikipedia-api

Answer №1

Here is a way to obtain the JsonElement using entrySet: 

        URL link = new URL("https://en.wikipedia.org/w/api.php?action=query&prop=extracts&format=json&exintro=&explaintext=&generator=random&grnnamespace=0");
        HttpURLConnection request = (HttpURLConnection) link.openConnection();
        request.connect();

        JsonElement jsonElement = new JsonParser().parse(new InputStreamReader((InputStream) request.getContent()));
        JsonElement pages = jsonElement.getAsJsonObject().get("query").getAsJsonObject().get("pages");

        Set<Entry<String, JsonElement>> elementSet = pages.getAsJsonObject().entrySet();

        JsonElement desiredElement = null;

        for(Map.Entry<String,JsonElement> entry : elementSet){
            desiredElement = entry.getValue();
        }

        //Ensure yourDesiredElement is not null

This solution should be helpful.

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