java - Using RestTemplate to retrieve and deserialize JSON of complex object

Question

I'm consuming a REST API using RestTemplate like so

public CoinResponse getExchange(){
        List<HttpMessageConverter<?>> messageConverters = new ArrayList<>();
        MappingJackson2HttpMessageConverter converter = new MappingJackson2HttpMessageConverter();
        converter.setSupportedMediaTypes(Collections.singletonList(MediaType.ALL));
        messageConverters.add(converter);
        restTemplate.setMessageConverters(messageConverters);
       return restTemplate.getForObject("https://api.coindesk.com/v1/bpi/currentprice.json", CoinResponse.class);
    }

And I'm getting the response as an instance of CoinResponse. Within CoinResponse I can access the BpiObject instance but the EUR, USD and GBP instances are all null. My model looks like this:

public class CoinResponse {
    public CoinResponse() {
    }

    @JsonProperty
    Time TimeObject;
    @JsonProperty
    private String disclaimer;
    @JsonProperty
    private String chartName;
    @JsonProperty
    Bpi BpiObject;
    // Getters and Setters
}

public class Bpi {
    public Bpi() {
    }

    @JsonProperty
    USD USDObject;
    @JsonProperty
    GBP GBPObject;
    @JsonProperty
    EUR EURObject;
    // Getter and Setters

What am I doing wrong here? What's the correct way of addressing this issue with RestTemplate?

My currency class looks like this:

public class EUR {
    public EUR() {
    }

    @JsonProperty
    private String code;
    @JsonProperty
    private String symbol;
    @JsonProperty
    private String rate;
    @JsonProperty
    private String description;
    @JsonProperty
    private float rate_float;
    // Getter and Setters
}

question from:https://stackoverflow.com/questions/65844179/using-resttemplate-to-retrieve-and-deserialize-json-of-complex-object

Answer 1

Waitting for answers