JSON 的几种简单格式和转换

1、JSON对象---JSONObject
｛"fbaCode":"PHX4","fromProvince":"310000","fromCity":"310100","fromProvince":"310000"｝
2、JSON数组---JSONArray
[｛"fbaCode":"PHX4","fromProvince":"310000","fromCity":"310100","fromProvince":"310000"｝,｛"fbaCode2":"PHX4","fromProvince2":"310000","fromCity2":"310100","fromProvince2":"310000"｝]
3、JSON字符串
'{"name":"张三","sex":"男"}'
4、混合

=====================转换=============================
1、string ->json
String json
JSONObject jsonObject = new JSONObject(json)
2、字符串数组转相对应的集合实体类 包：com.alibaba.fastjson
List models = JSONArray.parseArray(array, FbaRegionListModel.class);
3、实体类转json字符串
String s = com.alibaba.fastjson.JSON.toJSONString(model)
4、集合转JsonArray 数组
List models = JSONArray.parseArray(array, FbaRegionListModel.class)
JSONArray.toJSON(models)

来源：https://www.cnblogs.com/zrboke/p/12013810.html