How to get multiple Jsonobject with the same key?

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Basically, I have this JSON:

{"gameId":467366059,"mapId":11,"gameMode":"CLASSIC","gameType":"MATCHED_GAME","gameQueueConfigId":4,"participants":[{"teamId":100,"spell1Id":4,"spell2Id":14,"championId":157,"profileIconId":588,"summonerName":"MEDAUMASKINCOPY","bot":false,"**summonerId**":2833743,"runes":[{"count":6,"runeId":5247},{"count":3,"runeId":5251},{"count":9,"runeId":5289},{"count":9,"runeId":5317},{"count":1,"runeId":5337},{"count":2,"runeId":5412}],"masteries":[{"rank":1,"masteryId":4111},{"rank":4,"masteryId":4112},{"rank":3,"masteryId":4122},{"rank":1,"masteryId":4131},{"rank":1,"masteryId":4132},{"rank":3,"masteryId":4134},{"rank":1,"masteryId":4141},{"rank":3,"masteryId":4142},{"rank":1,"masteryId":4144},{"rank":2,"masteryId":4152},{"rank":1,"masteryId":4162},{"rank":2,"masteryId":4211},{"rank":2,"masteryId":4212},{"rank":1,"masteryId":4221},{"rank":3,"masteryId":4222},{"rank":1,"masteryId":4232}]},{"teamId":100,"spell1Id":11,"spell2Id":4,"championId":254,"profileIconId":550,"summonerName":"copy","bot":false,"**summonerId**":2883696,"runes":[{"count":9,"runeId":5247},{"count":3,"runeId":5290},{"count":6,"runeId":5295},{"count":9,"runeId":5315},{"count":3,"runeId":5335}],"masteries":[{"rank":1,"masteryId":4111},{"rank":4,"masteryId":4113},{"rank":3,"masteryId":4122},{"rank":1,"masteryId":4131},{"rank":1,"masteryId":4132},{"rank":3,"masteryId":4134},{"rank":1,"masteryId":4141},{"rank":3,"masteryId":4142},{"rank":3,"masteryId":4152},{"rank":1,"masteryId":4162},{"rank":2,"masteryId":4213},{"rank":2,"masteryId":4214},{"rank":3,"masteryId":4222},{"rank":1,"masteryId":4224},{"rank":1,"masteryId":4232}]},{"teamId":100,"spell1Id":4,"spell2Id":12,"championId":85,"profileIconId":23,"summonerName":"Yzy 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Jabiraka","bot":false,"**summonerId**":531086,"runes":[{"count":8,"runeId":5245},{"count":1,"runeId":5251},{"count":9,"runeId":5289},{"count":9,"runeId":5317},{"count":1,"runeId":5335},{"count":2,"runeId":5343}],"masteries":[{"rank":4,"masteryId":4113},{"rank":1,"masteryId":4114},{"rank":3,"masteryId":4122},{"rank":1,"masteryId":4132},{"rank":2,"masteryId":4211},{"rank":2,"masteryId":4213},{"rank":1,"masteryId":4221},{"rank":3,"masteryId":4222},{"rank":1,"masteryId":4232},{"rank":3,"masteryId":4233},{"rank":3,"masteryId":4234},{"rank":1,"masteryId":4243},{"rank":1,"masteryId":4244},{"rank":3,"masteryId":4252},{"rank":1,"masteryId":4262}]},{"teamId":200,"spell1Id":4,"spell2Id":7,"championId":18,"profileIconId":718,"summonerName":"Reed 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Sheldon","bot":false,"**summonerId**":2982516,"runes":[{"count":1,"runeId":5251},{"count":8,"runeId":5257},{"count":9,"runeId":5297},{"count":5,"runeId":5315},{"count":4,"runeId":5317},{"count":1,"runeId":5345},{"count":2,"runeId":5357}],"masteries":[{"rank":2,"masteryId":4211},{"rank":2,"masteryId":4212},{"rank":1,"masteryId":4221},{"rank":3,"masteryId":4222},{"rank":1,"masteryId":4232},{"rank":3,"masteryId":4233},{"rank":3,"masteryId":4312},{"rank":3,"masteryId":4313},{"rank":1,"masteryId":4314},{"rank":1,"masteryId":4322},{"rank":1,"masteryId":4324},{"rank":3,"masteryId":4331},{"rank":2,"masteryId":4333},{"rank":1,"masteryId":4334},{"rank":1,"masteryId":4341},{"rank":1,"masteryId":4342},{"rank":1,"masteryId":4352}]}],"observers":{"encryptionKey":"dkGJf37jaGpYGYBhwbBaNcG9XvUKW9WQ"},"platformId":"BR1","bannedChampions":[{"championId":64,"teamId":100,"pickTurn":1},{"championId":238,"teamId":200,"pickTurn":2},{"championId":40,"teamId":100,"pickTurn":3},{"championId":103,"teamId":200,"pickTurn":4},{"championId":268,"teamId":100,"pickTurn":5},{"championId":55,"teamId":200,"pickTurn":6}],"gameStartTime":1423276435804,"gameLength":-126}

Recommend viewing at that link.

And within all this, I need to get all the summonerId, which in this case are 10. This is my code, but it only takes the first summonerId and ignore the rest:

Map json1 = (Map)parser.parse(matei);
JSONObject wtf1 = (JSONObject) json1;
JSONArray eat = (JSONArray) wtf1.get("participants");
JSONObject dash= (JSONObject) eat.iterator().next();
Long wtfbo = (Long) dash.get("summonerId");
System.out.println(wtfbo);

Does anyone have any idea what I can do to get them all?

java json

  • Where you got the classes from JSONArray and JSONObject? What is the exact type of the variable parser?

2 answers

1


I don’t know exactly where you got the classes from JSONArray and JSONObject, since there are many different projects independently made by many different people who have classes with these names.

However, assuming that your code does not generate any build errors, it seems to me that you are using the Iterator incorrectly, just taking the first element of it instead of going through it. So you could do so:

Map json1 = (Map) parser.parse(matei);
JSONObject wtf1 = (JSONObject) json1;
JSONArray eat = (JSONArray) wtf1.get("participants");
Iterator it = eat.iterator();
while (it.hasNext()) {
    JSONObject dash = (JSONObject) it.next();
    Long wtfbo = (Long) dash.get("summonerId");
    System.out.println(wtfbo);
}

  • Could you tell me which library has the method iterator?

  • @rrnan I don’t know. That’s why I said "assuming your code does not generate any build errors".

  • 1

    The code worked perfectly. Thank you.

1

The class I use to manipulate JSON has no method iterator, still follows an alternative using loop :

JSONArray array = new JSONObject(json).getJSONArray("participants");
int lenght = array.length();

for(int i = 0; i < lenght; i++){
   JSONObject current = array.getJSONObject(i);
   System.out.println(current.get("summonerId")); // faz algo...
}

Testing as input the JSON that put together the question, the output were those numbers.

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