json-lib-2.3-jdk15.jar;
import net.sf.json.JSONArray;
(json)String转list:String->json->list
String statisticsResult = resultRecords.get(0).getStatisticsResult();
// 转化为JSONArray
JSONArray jsonArray = JSONArray.fromObject(statisticsResult);
// 强转为List *****注意 :此处虽然转为了List<Hashmap<String,Object>> 但,实际上转化为了List<JSONObject>
list = (List<HashMap<String, Object>>) jsonArray;
list转String(json):list->json->String
JSONArray json = JSONArray.fromObject(list);
rr.setStatisticsResult(json.toString());