net.sf.ezmorph.bean.MorphDynaBean cannot be cast to java.util.Map

public static void main(String[] arg0) {
    String reString = "{"
        + "\"code\": 100, \"msg\": \"\", \"data\": { \"rows\": [{ \"item\": \"小型車輛\", \"value\": \"100\" },{ \"item\": \"大型車輛\", \"value\": \"200\" }] }"
        + "}";
    JSONObject obj = JSONObject.fromObject(reString);
    JSONArray jsonArray = obj.getJSONObject("data").getJSONArray("rows");
    System.out.println(jsonArray.toString());
    /**
     * 錯誤例子：
     * List<Map<String, String>> mapListJson = JSONArray.toList(jsonArray);
     * 會報標題上的錯
     */
    List<Map<String, Object>> mapListJson = (List<Map<String, Object>>) JSONArray.toList(jsonArray, Map.class);
    Integer value = 0;
    for (Map<String, Object> m : mapListJson) {
        value += Integer.parseInt(m.get("value") == null ? "0" : m.get("value").toString());
    }

    System.out.println(value);
    }