java - 如何将嵌套 JSON 数组存储到模型中

Question

您好，我有一个名为 Job 的模型。该模型收集了有关特定工作的所有信息。但是数据库关系的布局方式意味着当我返回作业详细信息时，我会得到一个嵌套在作业对象内的 cargo 数组。我想知道如何将 name 存储在嵌套在 JSON 对象内的 cargo 数组中，我想将其存储到我的模型中。

请您花点时间考虑一下我的情况，我已经在 StackOverflow 和其他网站上搜索了解决方案，但它们提供的循环不起作用。希望我能通过发帖找到答案

带有嵌套数组的 JSON 对象:

"jobs": [
    {
        "id": 103080,
        "user_id": 496,
        "tracker_jobs_id": 91068,
        "game_id": 1,
        "pickup_city_id": 72,
        "destination_city_id": 128,
        "cargo_id": 366,
        "pickup_company_id": 16,
        "destination_company_id": 18,
        "date": "2018-11-03",
        "distance_driven": 244,
        "load_damage": 7,
        "estimated_income": 10956,
        "total_income": 10956,
        "cargo_weight": 24,
        "division_load": 0,
        "promotional_delivery_id": null,
        "another_driver": 0,
        "division_id": null,
        "convoy_code": null,
        "comments": null,
        "created_at": "2018-11-04 00:24:42",
        "updated_at": "2018-11-04 00:24:42",
        "delete": "false",
        "status": null,
        "cargo": {
            "id": 366,
            "name": "Square Tubing",
            "price_coef": 1,
            "fragility": 0.2,
            "wotr_only": 0,
            "overweight_dlc": 0
        },
        .... (THEN IT LOOPS WITH THE NEXT JOB)

我的工作模式:

public Job (int id, int user_id, int tracker_jobs_id, int game_id, int pickup_city_id, int destination_city_id,
           int cargo_id, int pickup_company_id, int destination_company_id, Date date, int distance_driven, int load_damage,
           int estimated_income, int total_income, int cargo_weight, int division_load, int promotional_devlivery_id, int another_driver,
           int division_id, String convoy_code, String comments, String delete, String status, JSONArray cargo) {

    this.id = id;
    this.user_id = user_id;
    this.tracker_jobs_id = tracker_jobs_id;
    this.game_id = game_id;
    this.pickup_city_id = pickup_city_id;
    this.destination_city_id = destination_city_id;
    this.cargo_id = cargo_id;
    this.pickup_company_id = pickup_company_id;
    this.destination_company_id = destination_company_id;
    this.date = date;
    this.distance_driven = distance_driven;
    this.load_damage = load_damage;
    this.estimated_income = estimated_income;
    this.total_income = total_income;
    this.cargo_weight = cargo_weight;
    this.division_load = division_load;
    this.promotional_devlivery_id = promotional_devlivery_id;
    this.another_driver = another_driver;
    this.division_id = division_id;
    this.convoy_code = convoy_code;
    this.comments = comments;
    this.delete = delete;
    this.status =  status;
    this.cargo = cargo;

}

如您所见，我已经尝试将其存储为 JSONArray，但它最终只是空白 []

我如何根据我的请求存储它:

JSONObject jObj = new JSONObject(response);
JSONArray listJobs = jObj.getJSONArray("jobs");
Gson gson = new Gson();
sUserJobs = new ArrayList<>();
for (int i = 0; i < listJobs.length(); i++) {
     try {
          Job job = gson.fromJson(listJobs.getJSONObject(i).toString(), Job.class);
          sUserJobs.add(job);
      } catch (JSONException e) {
                  e.printStackTrace();
      }
 }

Answer 1

您还需要有一个 Cargo 类。然后，您需要像下面一样提取 cargo ，同时获取作业类并将 cargo 对象设置为相关对象。

Cargo cargo = gson.fromJson(listJobs.getJSONObject(i).getString("cargo").toString(), cargo.class);