使用GSON和Retrofit 2.0的混合对象的嵌套JSON数组

Question

我正在尝试确定如何解析嵌套的JSON数组。此外，数组项有两种不同的类型（类别和项目）。该类别表明有孩子，每个孩子可以是一个类别或项目。我找到了另一个question，如果有人确认，可能会触及我想要做的事情。

{ "content": { "elements":[ { "type": "category", "id": "1", "title": "category 1", "description": "category description 1", "image": { "src": null, "thumb": null }, "elements":[ { "type": "category", "id": "1.1", "title": "category 1.1", "description": "category description 1.1", "image": { "src": null, "thumb": null }, "elements":[ { "type": "item", "id": "1.1.1", "title": "item 1.1.1", "description": "item description 1.1.1", "images":[], "options":[], "price":0.00, "vat": 0 }, { "type": "category", "id": "1.1.2", "title": "category 1.1.2", "description": "category description 1.1.2", "image": { "src": null, "thumb": null }, "elements":[ { "type": "item", "id": "1.1.2.1", "title": "item 1.1.2.1", "description": "item description 1.1.2.1", "images":[], "options":[], "price":0.00, "vat": 0 }] }] },{ "type": "category", "id": "1.2", "title": "category 1.2", "description": "category description 1.2", "image": { "src": null, "thumb": null }, "elements": [ { "type": "item", "id": "1.2.1", "title": "item 1.2.1", "description": "item description 1.2.1", "images":[], "options":[], "price":0.00, "vat": 0 }] }] }, { "type": "item", "id": 2, "title": "item 2", "description": "item description 2", "images":[], "options":[], "price":0.00, "vat": 0 }] } }

为了处理API调用和模型，我使用了GSON。

Gson gson = new GsonBuilder() .setFieldNamingPolicy(FieldNamingPolicy.LOWER_CASE_WITH_UNDERSCORES) .create();

我也使用Retrofit

retrofit = new Retrofit.Builder() .baseUrl("my url") .addConverterFactory(GsonConverterFactory.create(gson)) .build();