java - 从 ResultSet 返回 JSONArray 或 JSONObject

Question

我有以下方法...

我正在尝试验证 Oracle DB 中的结果。结果不是我所期望的，但我似乎无法弄清楚如何在不做 map 或列表/ map 的情况下使其正确。

public static JSONArray verifyDRFromButton(String transactionId) {
    JSONArray jsonArray = new JSONArray();
    try {
        ResultSet resultSet;
        Constants.threadSleep(5000);
        Constants.verifyOracle();
        String databaseConnectionString = String.format("jdbc:oracle:thin:@%s:%s:%s",  "*****", "****", "*****");

        Connection conn = DriverManager.getConnection(databaseConnectionString,"*****","*****");
        Statement stmt = conn.createStatement();
        resultSet = stmt.executeQuery("SELECT * from ****** WHERE ***** = '" + transactionId + "'");
        //Print DB Table
        Constants.threadSleep(500);
        //DBTablePrinter.printResultSet(rs);
        //result = rs.toString();
        while (resultSet.next()) {
            int totalRows = resultSet.getMetaData().getColumnCount();
            for (int i = 0; i < totalRows; i++) {
                JSONObject obj = new JSONObject();    
                obj.put(resultSet.getMetaData().getColumnLabel(i + 1)
                        .toLowerCase(), resultSet.getObject(i + 1));
                jsonArray.put(obj);
            }
        }
        conn.close();
    } catch (Exception e) {
        e.printStackTrace();
    }
    return jsonArray;
}

结果看起来像这样......

[
    {"id": "idvalue"}, 
    {"id2": "id2value"}, 
    {"name": "namevalue"}, 
    {"name2": "name2value"}
]

我希望是这样。

[
    {"id": "idvalue", "id2": "id2value"}, 
    {"name": "namevalue", "name2": "name2value"}
]

Answer 1

移动此行

JSONObject obj = new JSONObject()

在 for 循环和这一行之前

jsonArray.put(obj);

for循环之后如果您没有获得预期结果，请分享您的结果