java - HashMap 嵌套对象的 GSON Json 映射

Question

我有一个如下所示的 json 上下文:

{
  "data": {
    "details": {
      "en-CA": {
        "languageCode": "en-CA",
        "isPrimaryLocale": false
      },
      "en-US": {
        "languageCode": "en-US",
        "isPrimaryLocale": true,
        "languageDisplayName": "English (United States)",
      }
    }
  }
}

在java中用GSON映射它:

我创建了这个类:

public class ApiResponseSingleDto
{
    private ResponseDetail data;
}

public class ResponseDetail
{
    private ResponseDetails details;

    @Getter
    public static class ResponseDetails
    {
        public HashMap<String, LocaleDetail> row = new HashMap<>();
    }
}

public class LocaleDetail
{
    private String languageCode;
    private Boolean isPrimaryLocale;
    private String languageDisplayName;
}

当我尝试将 json 映射到 Java POJO 类时，HashMap 不起作用。有什么建议吗？

映射它:

GSON.fromJson("...json", Type type...);

Answer 1

尝试替换:

public class ApiResponseSingleDto
{
    private ResponseDetail data;
}

public class ResponseDetail
{
    private Map<String, LocaleDetail> details;
}

public class LocaleDetail
{
    private String languageCode;
    private Boolean isPrimaryLocale;
    private String languageDisplayName;
}

另外 json 似乎不正确:"languageDisplayName": "English (United States)",

应该只是“languageDisplayName”:“英语(美国)”

还有一点:我相信你应该有公共(public)字段或至少有 setter/getter