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

参数

params={"abc":0}

JSONObject转换Int类型

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

 运行错误写法<java.lang.Integer cannot be cast to java.lang.String>

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