您需要执行以下操作：

public class CountryInfoResponse {

   @JsonProperty("geonames")
   private List<Country> countries; 

   //getter - setter
}

RestTemplate restTemplate = new RestTemplate();
List<Country> countries = restTemplate.getForObject("http://api.geonames.org/countryInfoJSON?username=volodiaL",CountryInfoResponse.class).getCountries();

如果您可以使用某种注释来跳过级别会很棒，但它是还不可能（参见这个和 this ）

It would be great if you could use some kind of annotation to allow you to skip levels, but it's not yet possible (see this and this)