java.lang.ClassCastException：org.json.simple.JSONObject无法强制转换为java.lang.String

Question

这是我的json回复

"row":{"no":"1","SK":[{"val1":"sathees","val2":"FirstName"},{"val1":"Ramu","val2":"FirstName}]}

这是我的代码

Object js4 = parser.parse(row.toString());
JSONArray array = new JSONArray();
array.add(js4);
for (int i = 0; i < array.size(); i++) {
    JSONObject jsonObjectRow = (JSONObject) array.get(i);
    String no = (String) jsonObjectRow.get("no");
    String fl = (String) jsonObjectRow.get("FL");
}