java - 在java中使用哈希表创建json数组

Question

我对如何使用 JSONObject() 或来自 google 的 gson 库从 java 中的哈希表构造关联数组感到有点困惑。

如果有任何帮助，我们将不胜感激!

    JSONObject message = new JSONObject();
    Map<String,String> responseData = new Hashtable<String, String>();

[...]

    ResultSet results = getApprovalCount.executeQuery();

    while (results.next()) {
        responseData.put("vote" + results.getString("submission_id"), results.getString("counter"));
    }

[...]

    message.put("submissions", responseData);

结果:

{"submissions":{"vote1":"2","vote7":"1","vote25":"1","vote6":"1","vote13":"1","vote9":"1","vote11":"1"}}

期望的结果:

{"submissions":[{"vote1":"2"},{"vote7":"1"},{"vote25":"1"},{"vote6":"1"},{"vote13":"1"},{"vote9":"1"},{"vote11":"1"}]}

Answer 1

想通了...!

  JSONObject message = new JSONObject();
  ArrayList<Map<String,String>> responseData = new ArrayList<Map<String,String>>();
  User user = new User(request);

[...]

    while (results.next()) {
        Map<String,String> tmpdata = new Hashtable<String, String>();
        tmpdata.put("vote" + results.getString("submission_id"), results.getString("counter"));
        responseData.add(tmpdata);
    }

[...]

    message.put("submissions", responseData);