android - 如何使用 GSON 库解析这个 jsonarray

Question

这是我的 jsonarray。

[
  {
    "id": 3,
    "title": "Best Seller",
    "promotedProducts": [
      {
        "product": {
          "id": 4208,
          "name": "Gents T-Shirt With Navy Blue Collar cuff",
          "reviewList": [],
          "productDetail": {
            "id": 4207,
            "length": 33,
            "breadth": 27
          },
          "attributeList": [
            {
              "id": 1,
              "productId": 4208
            }
          ]
        }
      },
      {
        "product": {
          "id": 4208,
          "name": "Gents T-Shirt With Navy Blue Collar cuff",
          "reviewList": [],
          "productDetail": {
            "id": 4207,
            "length": 33,
            "breadth": 27
          },
          "attributeList": [
            {
              "id": 1,
              "productId": 4208
            }
          ]
        }
      }
    ]
  }
]

我为它创建了 Homecollection 类。还添加了以下用于解析的代码。我还为 product、promotedProducts、productDetail、attributeList、images 创建了子类。它给我两个项目的响应，但其他详细信息都为空

 Gson gson = new Gson();
                HomeProducts homeProducts = HomeProducts.getInstance();
                List<HomeCollections> collectionList = new ArrayList<HomeCollections>();
              collectionList = Arrays.asList(gson.fromJson(response.toString(), HomeCollections[].class));

Answer 1

像这样创建一个模型类。

public class ProductDetail
    {
        public int id { get; set; }
        public int length { get; set; }
        public int breadth { get; set; }
    }

public class AttributeList
{
    public int id { get; set; }
    public int productId { get; set; }
}

public class Product
{
    public int id { get; set; }
    public string name { get; set; }
    public List<object> reviewList { get; set; }
    public ProductDetail productDetail { get; set; }
    public List<AttributeList> attributeList { get; set; }
}

public class PromotedProduct
{
    public Product product { get; set; }
}

public class HomeCollections
{
    public int id { get; set; }
    public string title { get; set; }
    public List<PromotedProduct> promotedProducts { get; set; }
}

现在像这样使用 GSON。这里的 url 是源链接。您将获得作为模型的响应。现在

response.promotedProducts will give you all list of items.

    InputStream source = retrieveStream(url);
    Gson gson = new Gson();
    Reader reader = new InputStreamReader(source);
    HomeCollections response = gson.fromJson(reader, HomeCollections.class);