Java的json与对象转换的问题

1、将json数组字符串转成JSONArray

String jsonstring="[{"id":8,"name":"showDebit","title":null,"status":0,"sort":0,"pid":360,"level":3},{"id":952,"name":"showDebit","title":"显示发票工作区3","status":1,"sort":1,"pid":360,"level":3}]";

JSONArray jsonArray;
jsonArray=JSON.parseArray(jsonstring);//将json数组字符串转成jsonArray，jsonArray相当于是josnObeject的集合
for (int i = 0; i < jsonArray.size(); i++) {
    JSONObject jsonObject = jsonArray.getJSONObject(i);
    Node d=new Node();
    d.setTitle(jsonObject.getString("title"));
    d.setName(jsonObject.getString("name"));
    d.setPid(jsonObject.getInteger("pid"));
    d.setSort(jsonObject.getInteger("sort"));
    d.setLevel(jsonObject.getInteger("level"));
    nodeService.save(d);//插入node表
}

 

2、将java list转换成jsonarray

JSONArray array= JSONArray.parseArray(JSON.toJSONString(list));

 

3、将java list转换成jsonstring

String jsonArray= JSON.toJSONString(bList);//将list转换为jsonstring