如何为嵌套json创建JSONObject

Question

我无法为嵌套json创建json对象。

我可以为基本json创建json对象。 我无法添加其他字段。

final JSONObject jsonObject = new JSONObject();
    try {

        jsonObject.put("name", "new name");
        jsonObject.put("description", "new election");

    } catch (JSONException e) {
        e.printStackTrace();
    }

这是我的json：

{
  "name": "string",
  "description": "string",
  "candidates": [
    "string"
  ],
  "ballotVisibility": "string",
  "voterListVisibility": true,
  "startingDate": "2019-07-05T20:09:23.311Z",
  "endingDate": "2019-07-05T20:09:23.311Z",
  "isInvite": true,
  "isRealTime": true,
  "votingAlgo": "string",
  "noVacancies": 0,
  "ballot": [
    {
      "voteBallot": "string",
      "voterEmail": "string"
    }
  ]
}

Answer 1

尝试这个：

final JSONObject jsonObject = new JSONObject();
    Map<String, String> map = new HashMap<>();
    map.put("voteBallot", "string");
    map.put("voterEmail", "string");
    try {

        jsonObject.put("name", "new name");
        jsonObject.put("description", "new election");
        jsonObject.put("candidates", new String[] {"new String"});
        jsonObject.put("ballotVisibility", "string");
        jsonObject.put("voterListVisibility", true);
        jsonObject.put("startingDate", LocalDateTime.now().atZone(ZoneOffset.UTC));
        jsonObject.put("ballot", new Map[]{map});
        System.out.println("jsonObject = " + jsonObject);
    } catch (JSONException e) {
        e.printStackTrace();
    }

这不是所有领域，而是所有希望帮助的不同类型。 输出：

{  
   "ballot":[  
      {  
         "voteBallot":"string",
         "voterEmail":"string"
      }
   ],
   "candidates":[  
      "new String"
   ],
   "ballotVisibility":"string",
   "name":"new name",
   "voterListVisibility":true,
   "description":"new election",
   "startingDate":"2019-07-05T22:34:58.750Z"
}

Answer 2

您只需要创建一个新的JSONObject然后使用新名称将其附加到父对象即可。 下面是附加ballot的示例：

JSONObject jsonObject = new JSONObject();
JSONObject ballot = new JSONObject();
ballot.put("voteBallot","string");
ballot.put("voterEmail","string");

jsonObject.put("name", "new name");
jsonObject.put("description", "new election");

jsonObject.put("ballot", ballot);  //Append the other JSONObject to the parent one

System.out.println(jsonObject.toString());

输出（具有某些格式）：

{
"ballot":
     {
     "voteBallot":"string",
     "voterEmail":"string"
     },
 "name":"new name",
 "description":"new election"
}

您也可以改用JSONArray并以相同的方式附加它。