我無法為嵌套的 json 創建 json 對象。我可以為基本的 json 創建 json 對象。我無法添加更多字段。final JSONObject jsonObject = new JSONObject(); try { jsonObject.put("name", "new name"); jsonObject.put("description", "new election"); } catch (JSONException e) { e.printStackTrace(); }這是我的 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" } ]}
2 回答
largeQ
TA貢獻2039條經驗 獲得超8個贊
您只需要創建一個新的JSONObject，然后使用新名稱將其附加到父對象。下面顯示了一個示例附加ballot：
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());
輸出（帶有一些格式）：
{
"ballot":
{
"voteBallot":"string",
"voterEmail":"string"
},
"name":"new name",
"description":"new election"
}
您也可以使用JSONArrayinstead 并以相同的方式附加它。
不負相思意
TA貢獻1777條經驗 獲得超10個贊
嘗試這個：
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();
}
它不是所有領域，而是所有不同類型希望它有所幫助。輸出：
{
"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"
}
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