JSONObject转换Int类型--java.lang.Integer cannot be cast to java.lang.String

params={"abc":0}

JSONObject json = JSONObject.fromObject(params);
if (json.containsKey("desgin_review_type")) {
value=json.getInt("abc")+"";
}
}

String value = ";
Map<String, String> map = JSONObject.fromObject(params);
if (map.containsKey("abc")) {
value = map.get("abc").toString();
}