Question

Json from server 
           {
          "status": 1,
          "players": {
            "__v": 5,
            "_id": "52f719eb31f3b9b20500000c",
            "battingStyle": "Left Hand Batsman",
            "bowlingStyle": "Facing Batsman",
            "dob": "2000-02-09T06:01:49.144Z",
            "fname": "Muhammad",
            "playingRole": "Bowler",
            "sname": "Sami",
             "teams": [
                  {
                    "__v": 23,
                    "_id": "52f715b431f3b9b205000004",
                    "category": "Veteran‎s",
                    "name": "Golden Eagle",
                    "rating": 5,
                    "teamGender": "Men"
                  },
                  {
                    "__v": 17,
                    "_id": "52f715df31f3b9b205000005",
                    "category": "Veterans",
                    "name": "Choudhry Sports",
                    "rating": 5,
                    "teamGender": "Men"
                  }
                ],
             "grounds": [
                  {
                    "__v": 2,
                    "_id": "53381bb5f0bce0bd20000001",
                    "address": "6046 W Lake Sammamish Way Northeast, Redmond, WA 98052, United States",
                    "city": "Redmond",
                    "country": "United States",
                    "latitude": "",
                    "longitude": "",
                    "name": "Marymoor Park"
                  },
                  {
                    "__v": 2,
                    "_id": "53381bb5f0bce0bd20000001",
                    "address": "6046 W Lake Sammamish Way Northeast, Redmond, WA 98052, United States",
                    "city": "Redmond",
                    "country": "United States",
                    "latitude": "",
                    "longitude": "",
                    "name": "Marymoor Park"
                  }
                ]
        }
        }

并且在j子解析模型之后包含重复的id 播放器[ ID = 1， _id = 531029b207987409620000d6， battingStyle = RHB， bowlingStyle = RAOS， dob = 2000-02-28T06：15：15.264Z， playingRole = BWL， SNAME = QadeerButt， FNAME =塔希尔，廊= [

          ],
          games=[
            Game[
              id=4,
              gameType=T20‎,
              name=TotallyCricketvsLahoreTiger,
              totalOvers=20,
              dateStarted=2014-06-18T19: 00: 00.000Z,
              dateEnded=2014-06-18T19: 00: 00.000Z,
              innings=[

              ],
              grounds=[
                Ground[
                  id=26,
                  address=14835SE18thPl,
                  Bellevue,
                  WA98007,
                  UnitedStates,
                  city=Bellevue,
                  country=UnitedStates,
                  name=RobinswoodPark
                ],
                Ground[
                  id=26,
                  address=14835SE18thPl,
                  Bellevue,
                  WA98007,
                  UnitedStates,
                  city=Bellevue,
                  country=UnitedStates,
                  name=RobinswoodPark
                ]
              ],
              teams=[
                Team[
                  id=30,
                  name=TotallyCricket,
                  category=Veterans,
                  teamGender=Men,
                  rating=5
                ],
                Team[
                  id=19,
                  name=LahoreTiger,
                  category=Under19,
                  teamGender=Men,
                  rating=3
                ]
              ]
            ]
          ]
        ]

Answer 1

只需检查Collection（可能是一个arraylist？）是否已经有一个带有id的对象，然后再存储一个新对象。

Answer 2

是的，但这是JSON显示的内容。包含重复JSON对象的JSON数组。

如果JSONObject已经存在，您可能希望在解析时进行验证，并将其复制到另一个。

GSON gson = new GSON();

JSONArray json = new JSONArray(gson.toJson(yourobject));

JSONArray secondJson = new JSONArray();

for (int i = 0; i <= json.length(); i++) {
if (!jsonArrayHasItem(secondJson, json.getInt("id")) {
     secondJson.put(jsonArray.getJsonObject(i));
}
}

public boolean jsonArrayHasItem(JSONArray jsonArray, int item) {
   for (int i = 0; i <= jsonArray.length(); i++) {
      if (jsonArray.getJsonObject(i).has(item)) return true;
   }
   return false;
 }

根本没有测试或编译。只是伪代码。

在解析JSON时消除重复的密钥

2 个答案: