Getting a Value from a JsonArray using gson

Question

I have searched everywhere and cannot find out how to do this, I'm super stuck. I have NO experience with JSON files, so spoon feeding is appreciated along with an explanation.

I have this JSON text here for testing:

    {
      "id":"4566e69fc90748ee8d71d7ba5aa00d20",
      "properties":
                    [
                     {
                      "name":"textures",
                      "value":"eyJ0aW1lc3RhbXAiOjE0ODI4ODAxNDMwNzYsInByb2ZpbGVJZCI6IjQ1NjZlNjlmYzkwNzQ4ZWU4ZDcxZDdiYTVhYTAwZDIwIiwicHJvZmlsZU5hbWUiOiJUaGlua29mZGVhdGgiLCJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvMTNlODFiOWUxOWFiMWVmMTdhOTBjMGFhNGUxMDg1ZmMxM2NkNDdjZWQ1YTdhMWE0OTI4MDNiMzU2MWU0YTE1YiJ9LCJDQVBFIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvMjJiOWM1ZWE3NjNjODZmYzVjYWVhMzNkODJiMGZhNjVhN2MyMjhmZDMyMWJhNTQ3NjZlYTk1YTNkMGI5NzkzIn19fQ==",
                     },
                    ],
      "name":"Thinkofdeath",
    }

I currently have this:

    JsonElement playerProfile = new JsonParser().parse(jsonLine);
    JsonObject jsonProfile = playerProfile.getAsJsonObject();
    JsonArray properties = jsonProfile.getAsJsonArray("properties");

Which returns [

[
  {
    "name":"textures",
    "value":"eyJ0aW1lc3RhbXAiOjE0ODI4ODAxNDMwNzYsInByb2ZpbGVJZCI6IjQ1NjZlNjlmYzkwNzQ4ZWU4ZDcxZDdiYTVhYTAwZDIwIiwicHJvZmlsZU5hbWUiOiJUaGlua29mZGVhdGgiLCJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvMTNlODFiOWUxOWFiMWVmMTdhOTBjMGFhNGUxMDg1ZmMxM2NkNDdjZWQ1YTdhMWE0OTI4MDNiMzU2MWU0YTE1YiJ9LCJDQVBFIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvMjJiOWM1ZWE3NjNjODZmYzVjYWVhMzNkODJiMGZhNjVhN2MyMjhmZDMyMWJhNTQ3NjZlYTk1YTNkMGI5NzkzIn19fQ==",
  },
]

Of course. How do I get the "value" from this JsonArray? Note I'm using Google's API, Gson

as for me, usually i model the jsons to a pojo -- but you could always get it as a JsonElement and then get as json object, finally get("value") to get value as (sadly) JsonElement.. it's pretty roundabout, but for sure, i'd suggest you to make pojo.. — Bagus Tesa
– Bagus Tesa, Commented Dec 28, 2016 at 3:30
I appreciate your help, but like I said, I'm completely new to this JSON thing and kinda need a little spoon feeding :P — Sage M
– Sage M, Commented Dec 28, 2016 at 3:34

Shubham · Accepted Answer · 2016-12-28 03:38:07Z

6

You can get values using:

JsonObject propertiesJson = properties.get(0);
String value = propertiesJson.getString("value");

answered Dec 28, 2016 at 3:38

Shubham

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4 Comments

Sage M Over a year ago

Aha! It works, just not it's not "getString" its "get("value").toString"

Darshit Over a year ago

@SageM If you are using Json library than try to use its method for better convenience. get value as : propertiesJson.get("value").getAsString();

eyeballs Over a year ago

properties.get(0) is JsonElement, not JsonObject in Gson. I used this code. String name = properties.get(0).getAsJsonObject().get("name").getAsString();

Smart Coder Over a year ago

in my case, I had to use jsonObject.get(object1) to get actual object first and then the .toString() method in Gson.fromJson();

Vasil Valchev · Accepted Answer · 2021-12-20 16:18:17Z

0

array is JsonArray object from com.google.gson library

for (int i=0; i<array.size(); i++) {
    JsonObject json = array.get(i).getAsJsonObject();
    String value = json.get("key").getAsString();
}

answered Dec 20, 2021 at 16:18

Vasil Valchev

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