Gson 反序列化结果对于一种类型为 null

Question

我得到一个由两种类型的对象组成的响应：Pagination和ArtistSearch列表。我用于反序列化的模型是：

public class ArtistSearchResults {
List<ArtistSearch> artistSearchList;
Pagination pagination;
// getters and setters...
}

我在这里反序列化：

            Gson gson = new Gson();
            ArtistSearchResults results = gson.fromJson(response.toString(), ArtistSearchResults.class);
            List<ArtistSearch> artistSearchList = results.getArtistSearchList();
            Pagination pagination = results.getPagination();
            Log.i(TAG, "onSuccess Pagination size == " + pagination.getItems() );
            Log.i(TAG, "onSuccess RESULTS size == " + artistSearchList.get(0).getTitle() );

尽管我正确获得了Pagination对象的响应，但我总是为艺术家搜索列表获取空。

我没有收到任何错误消息，所以我不确定错误在哪里。我得到的结果看起来像这样：

07-10 06:11:06.726 6954-6954/jb.ti.discogsball I/SEARCHHANDLER: onSuccess Search-Artist response = {"pagination":{"per_page":5,"pages":3,"page":1,"urls":{"last":"https://api.discogs.com/database/search?q=savage+republic&per_page=5&type=artist&page=3","next":"https://api.discogs.com/database/search?q=savage+republic&per_page=5&type=artist&page=2"},"items":14},"results": [{"thumb":"https://api-img.discogs.com/RAHE1vqHWb1xwPUv5y2Q1v5g4Yo=/150x150/smart/filters:strip_icc():format(jpeg):mode_rgb():quality(40)/discogs-images/A-121133-1262786660.jpeg.jpg","title":"Savage Republic","uri":"/artist/121133-Savage-Republic","resource_url":"https://api.discogs.com/artists/121133","type":"artist","id":121133},{"thumb":"https://api-img.discogs.com/GYkPyAYZEcFM0bzyjnBple7P3Yw=/150x150/smart/filters:strip_icc():format(jpeg):mode_rgb():quality(40)/discogs-images/A-307086-1160815350.jpeg.jpg","title":"Bruce Licher","uri":"/artist/307086-Bruce-Licher","resource_url":"https://api.discogs.com/artists/307086","type":"artist","id":307086},{"thumb":"https://api-img.discogs.com/XHvbh885CZ2uTcq7WT3ph0n0gMs=/150x150/smart/filters:strip_icc():format(jpeg):mode_rgb():quality(40)/discogs-images/A-71224-1334785233.jpeg.jpg","title":"Medicine (2)","uri":"/artist/71224-Medicine-2","resource_url":"https://api.discogs.com/artists/71224","type":"artist","id":71224},{"thumb":"","title":"Val Haller","uri":"/artist/492425-Val-Haller","resource_url":"https://api.discogs.com/artists/492425","type":"artist","id":492425},{"thumb":"","title":"Ramona Clarke","uri":"/artist/1957827-Ramona-Clarke","resource_url":"https://api.discogs.com/artists/1957827","type":"artist","id":1957827}]}
07-10 06:11:06.732 6954-6954/jb.ti.discogsball I/SEARCHHANDLER: onSuccess Pagination size == 14

如您所见，我得到了Pagination对象的值，但我得到了艺术家搜索列表的NPE。

我用于艺术家搜索的模型是：

public class ArtistSearch {
int id;
String title;
String type;
String resource_url;
String uri;
String thumb;
// getters and setters ...

这是解析为 null 的响应中的文本：

"results"：

[{"thumb"："https：//api-img.discogs.com/RAHE1vqHWb1xwPUv5y2Q1v5g4Yo=/150x150/smart/filters:strip_icc（）：format（jpeg）：mode_rgb（）：quality（40）/discogs-images/A-121133-1262786660.jpeg.jpg"，"title"："Savage Republic"，"uri"："/artist/121133-Savage-Republic"，"resource_url"："https://api.discogs.com/artists/121133"，"type"："artist"，"id"：121133}，{"thumb"："https：//api-img.discogs.com/GYkPyAYZEcFM0bzyjnBple7P3Yw=/150x150/smart/filters:strip_icc（）：format（jpeg）：mode_rgb（）：quality（40）/discogs-images/A-307086-1160815350.jpeg.jpg"，"title"："Bruce Licher"，"uri"："/artist/307086-Bruce-Licher"，"resource_url"："https://api.discogs.com/artists/307086"，"type"："artist"，"id"：307086}，{"thumb"："https：//api-img.discogs.com/XHvbh885CZ2uTcq7WT3ph0n0gMs=/150x150/smart/filters:strip_icc（）：format（jpeg）：mode_rgb（）：quality（40）/discogs-images/A-71224-1334785233.jpeg.jpg"，"title"："医学 （2）"，"uri"："/artist/71224-Medicine-2"，"resource_url"："https://api.discogs.com/artists/71224"，"type"："artist"，"id"：71224}，{"thumb"："，"title"："Val Haller"，"uri"："/artist/492425-Val-Haller"，"resource_url"："https://api.discogs.com/artists/492425"，"type"："artist"，"id"：492425}，{"thumb"："，"title"："Ramona Clarke"，"uri"："/artist/1957827-Ramona-Clarke"，"resource_url"："https://api.discogs.com/artists/1957827"，"type"："artist"，"id"：1957827}]

Answer 1

您能否替换ArtistSearchResults.java中的以下变量声明：

private List<ArtistSearch> artistSearchList;

通过这个：

@SerializedName("results")
private List<ArtistSearch> artistSearchList;

并看到结果？