Question

他们，你能帮我改造吗？我正在尝试实现Post请求，但我不知道如何正确执行。

@FormUrlEncoded
    @POST("/tools/")
    SaleEvent updateUser(@Field("field1") String field1, @Field("field2") String field2);

类SaleEvent与JsonArray中的json对象具有相同的字段“更新” 问题是 - 我有一个复杂的响应，不容易解析gson：

{
  "tag": "check_update",
  "success": 1,
  "error": 0,
  "updates": [
    {
      "uid": "47",
      "shop_name": "Ashan",
      "shop_address": "\u041c\u043e\u0441\u043a\u043e\u0432\u0441\u043a\u0438\u0439 \u043f\u0440\u043e\u0441\u043f\u0435\u043a\u0442 25",
      "name": "\u0410\u0448\u0430\u043d",
      "vip_priority": "1",
      "event_type": "0",
      "lat": "52.4978812",
      "lon": "13.4055422",
      "image_url": "uploads\/images3.jpeg",
      "city_id": "2",
      "version": "0",
      "date_from": "2014-12-28 00:00:00",
      "date_to": "2014-12-29 00:00:00",
      "created_at": "2014-07-10 00:00:00",
      "updated_at": "2014-07-10 00:00:00",
      "comment_long": "ewrterwt",
      "comment_short": "wertewrt"
    },
    {
      "uid": "48",
      "shop_name": "Kvadrat",
      "shop_address": "\u0432\u0443\u043b. \u0414\u0438\u043c\u0438\u0442\u0440\u043e\u0432\u0430, 7",
      "name": "\u041a\u0432\u0430\u0434\u0440\u0430\u0442",
      "vip_priority": "1",
      "event_type": "0",
      "lat": "52.7678812",
      "lon": "13.3855422",
      "image_url": "/uploads\/images1.jpeg",
      "city_id": "2",
      "version": "0",
      "date_from": "2014-12-28 00:00:00",
      "date_to": "2014-12-29 00:00:00",
      "created_at": "2014-07-10 00:00:00",
      "updated_at": "2014-07-10 00:00:00",
      "comment_long": "ewrtwret",
      "comment_short": "Privet"
    },

  ]
}

我需要的是在ArrayList中获得响应

@FormUrlEncoded
        @POST("/tools/")
        ArrayList<SaleEvent> updateUser(@Field("field1") String field1, @Field("field2") String field2);

像这样的Smth

问题解决了：问题在于使用ArrayList而不是List

Answer 1

您可以使用TypeAdapterFactory从复杂的JSON中提取数据。这是班级的简单实施

ItemTypeAdapterFactory.java

public class ItemTypeAdapterFactory implements TypeAdapterFactory {

    public <T> TypeAdapter<T> create(Gson gson, final TypeToken<T> type) {

        final TypeAdapter<T> delegate = gson.getDelegateAdapter(this, type);
        final TypeAdapter<JsonElement> elementAdapter = gson.getAdapter(JsonElement.class);

        return new TypeAdapter<T>() {

            public void write(JsonWriter out, T value) throws IOException {
                delegate.write(out, value);
            }

            public T read(JsonReader in) throws IOException {

                JsonElement jsonElement = elementAdapter.read(in);
                if (jsonElement.isJsonObject()) {
                    JsonObject jsonObject = jsonElement.getAsJsonObject();
                    if (jsonObject.has("updates") && jsonObject.get("updates").isJsonObject())
                    {
                        jsonElement = jsonObject.get("updates");
                    }
                }

                return delegate.fromJsonTree(jsonElement);
            }
        }.nullSafe();
    }
}

然后你需要创建一个GSON Builder.Here是它的一个例子。

Gson gson = new GsonBuilder()
                .registerTypeAdapterFactory(new ItemTypeAdapterFactory()) // This is the important line ;)
                .create();

最后将GSON Builder附加到RequestAdapter，如下：

RestAdapter restAdapter = new RestAdapter.Builder()
                .setEndpoint(BASE_URL)
                .setConverter(new GsonConverter(gson))
                .build();

现在您必须声明GSON响应对象和请求参数：

@FormUrlEncoded
    @POST("/tools/")
    private Void updateUser(@Field("field1") String field1, @Field("field2") String field2,Callback<JSONResponse> fbLogin);

这是 JSONResponse.java

class JSONResponse {
@SerializedName("update")
ArrayList<SaleEvent> array;
}

然后声明 SaleEvent.java

class SaleEvent {
@SerializedName("uid")
int uid;
@SerializedName("shop_name")
String uid;
@SerializedName("version")
int version;
....
}

然后提出要求......希望一切顺利

这将适用于你

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