android如何从json字符串中取自己想要的数据

场景

假设后台返回的json数据是以字符串的形式 需要自己处理才能拿到自己想要的数据

如

{
    "code":2000,
    "msg":"success",
    "requestDomain":"oil.htinno.com",
    "data":"{"station_id":6002,"link":"https:\/\/my.htinno.com\/#\/pages\/home\/home?
    key=03c075eebc68da05cd618c163ef9a2a3",
    "key":"03c075eebc68da05cd618c163ef9a2a3","expire_time":1609991942}"
}

可以看到data里的数据是一个字符串"{"station_id":6002,"link":"https:\/\/my.htinno.com\/#\/pages\/home\/home?key=03c075eebc68da05cd618c163ef9a2a3","key":"03c075eebc68da05cd618c163ef9a2a3","expire_time":1609991942}"
假如想要link里的数据 怎么办呢？

				JSONObject jsonObject = new JSONObject(model.getData());
                String link = jsonObject.getString("link");