使用WebClient获取JSON对象的列表

Question

我正在尝试使用WebClient提高异步Java技能。我有一个可获取和API的简单控制器，但它不会通过简单地进行“ bodytomono（sportresponse.class）”来映射

响应一种更清洁的方法来解决这个问题。当前的代码是可行的，它看起来很凌乱而不干净。

@Service
public class SportService {
    private final WebClient sportWebClient;
    private ApplicationConfiguration applicationConfiguration;

public SportService(WebClient webClient, ApplicationConfiguration applicationConfiguration) {
    this.sportWebClient = webClient;
    this.applicationConfiguration = applicationConfiguration;
}

public List<SportResponse> getAllSports() {
    return sportWebClient
            .get()
            .uri("api/v1/json/2/all_sports.php")
            .retrieve()
            .bodyToMono(LinkedHashMap.class)
            .map(this::mapResponse)
            .block();
}
private List<SportResponse> mapResponse(LinkedHashMap response) {
    ObjectMapper mapper = new ObjectMapper();
    List list = (ArrayList) response.get("sports");
    List<SportResponse> sportResponseList = (List<SportResponse>) list.stream()
            .map(item -> mapper.convertValue(item, SportResponse.class))
            .collect(Collectors.toList());
    return sportResponseList;
}

}

Answer 1

您只需要使用嵌入式对象定义相应的POJO，杰克逊将自动进行映射

public List<SportResponse.Sport> getAllSports() {
    return sportWebClient
            .get()
            .uri("api/v1/json/2/all_sports.php")
            .retrieve()
            .bodyToMono(SportResponse.class)
            .map(SportResponse::getSports)
            .block();
}

@Data
private class SportResponse {
    @JsonProperty("sports")
    private List<Sport> sports;

    @Data
    private static class Sport {
        @JsonProperty("idSport")
        private String idSport;
        
       ...
    }
}