我收到一个包含两种类型的对象的响应：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() );
尽管我正确地得到了
Pagination对象的响应，但我对artistSearchList总是返回null。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，但是我得到了artistSearchList的NPE。我用于ArtistSearch的模型是：
public class ArtistSearch {
int id;
String title;
String type;
String resource_url;
String uri;
String thumb;
// getters and setters ...
这是响应中解析为null的文本：
“结果”：[{“拇指”：“ 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“：”野蛮人
Republic”，“ uri”：“ / artist / 121133-Savage-Republic”，“ resource_url”：“ https://api.discogs.com/artists/121133”，“ type”：“ artist”，“ id”： 121133}，{“缩略图”：“ 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}，{“拇指”：“ 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}]
最佳答案
您能否在ArtistSearchResults.java中替换以下变量声明：private List<ArtistSearch> artistSearchList;
这样：
@SerializedName("results")
private List<ArtistSearch> artistSearchList;
看看结果吗？