@JsonRootName没有按我想要的那样工作

Question

这是我的设备

@JsonRootName("Facility")
@XmlAccessorType(XmlAccessType.NONE)
@XmlType(name = "Facility", propOrder = { "id", "name", "totalQuantity" })
public class FacilityDTO implements Serializable {

private static final long serialVersionUID = 1L;

@XmlElement(required = true)
private String id;
@XmlElement(required = true)
private String name;
@XmlElement(required = true)
private double totalQuantity;

public FacilityDTO() {
}

public FacilityDTO(Facility facility) {
    this.name = facility.getName();
    this.totalQuantity = facility.getTotalQuantity();
    this.id = facility.getId();
}// getters setter

这是我的消息正文作者

ByteArrayOutputStream out = new ByteArrayOutputStream();
ObjectMapper mapper = new ObjectMapper();
mapper.registerModule(new Jdk7Module());
mapper.configure(SerializationFeature.WRAP_ROOT_VALUE, true);
mapper.writeValue(out, object);
int bytesCount = out.size();
byte[] bytes = out.toByteArray();
entityStream.write(bytes);
entityStream.flush();

我的问题是：

1. 为什么结果似乎不正确？我被放在@JsonRootName（“Facility”）上，并且还启用了包装根特性
2. 我错过了什么

Answer 1

请参阅使用根元素的Jackson JSON反序列化

根据上面，你需要配置反序列化如下：mapper.configure（DerializationFeature.UNWRAP_ROOT_VALUE，true）；