JSON转换

JSON转换

1.JSON转为List<Map<String, Object>>

String  costStatus="[{\"id\":24489,\"itemStatus\":1},{\"id\":24529,\"itemStatus\":1}]";
        List<Map<String, Object>> jsonMap = (List<Map<String, Object>>) JSONArray.parse(costStatus);

        if(!org.springframework.util.StringUtils.isEmpty(jsonMap)){
            for (Map<String, Object> map:jsonMap) {
                String id = (String )map.get("id");
                String itemStatus = (String)map.get("itemStatus");

            }
        }

**2.JSON转为subObject **

String jsonString="[{"itemName":"物业","itemVal":"7317.28"},{"itemName":"租金","itemVal":"38512"}]";
JSONArray array = JSONArray.parseArray(jsonString);
            if (!StringUtils.isEmpty(array)) {
                float total = 0f;
                for (int i = 0; i < array.size(); i++) {

                    JSONObject subObject = (JSONObject) array.get(i);
                    String itemName = (String) subObject.get("itemName");
                    String itemVal = (String) subObject.get("itemVal");
                    }
                    }

3.依赖包

import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;