public static JSONArray getList(String sql, Object... params) {
Connection con=DBPool.getConnection();
final JSONArray jsonArr = new JSONArray();
try {
QueryRunner runner = new QueryRunner();
runner.query(con,sql.toString(), new ResultSetHandler<Object>() {
public Object handle(ResultSet rs) throws SQLException {
ResultSetMetaData metaData = rs.getMetaData();
int cols = metaData.getColumnCount();
while (rs.next()) {
JSONObject jsonObj = new JSONObject();