jackson web服务-解析映射不工作

Question

我有一个像这样的web服务方法。我将通过POST发送JSON映射到该方法，但它没有正确设置address字段。我知道JSON是有效的，因为它直接从一个将一个人转储到JSON并读回它的单元测试出来。测试通过（反序列化的对象有2个电话号码），这是确切的字符串。

@POST
@Override
@Consumes({"application/xml", "application/json"})
public void create(Person entity) {
    System.out.println("Saving entity: " + entity);
    super.create(entity);
    System.out.println("Saved: " + entity);
}

当我发布JSON时，它不会在对象上设置phone numbers映射。以下是输出：

信息：保存实体：Person{id=null,firstname=john,nickname=jj,lastname=smith,middlenames=[Stelling,Deering],idnum=js3234,ismale=n,birthday=null,phoneNumbers=null}

信息：已保存：Person{id=2,FirstName=John,NickName=JJ,LastName=Smith,Middlenames=[Stelling,Deering],idnum=JS3234,ismale=N,birthday=null,PhoneNumbers=null}

下面是JSON：

{
    "id": null,
    "firstName": "John",
    "nickname": "JJ",
    "lastName": "Smith",
    "middleNames": [
        "Stelling",
        "Deering"
    ],
    "idNum": "js3234",
    "isMale": "n",
    "birthday": 778266673889,
    "phoneNumbers": {
        "Personal Mobile": {
            "countryCode": "26",
            "areaCode": "200",
            "subscriberNubmer": "4069942",
            "extension": null
        },
        "Home": {
            "countryCode": "79",
            "areaCode": "115",
            "subscriberNubmer": "9518863",
            "extension": null
        }
    }
}

这些物体如下所示：

@Entity
@Table(name = "ent_person")
public class Person implements Serializable, Comparable<Person> {

@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;

private static final long serialVersionUID = -4680156785318108346L;

protected String firstName;

protected String nickname;

protected String lastName;

@ElementCollection(fetch = FetchType.EAGER)
protected List<String> middleNames;

protected String idNum;

protected char isMale;

@Temporal(value = TemporalType.DATE)
protected Date birthday;

@ElementCollection(fetch=FetchType.EAGER)
@MapKeyColumn(name = "name")
@Column(name = "value")
protected Map<String, PhoneNumber> phoneNumbers;
--- Snipped getters, setters, to string and constructors --

这是PhoneNumber对象

public class PhoneNumber implements Serializable {

private static final long serialVersionUID = -423634682785318106L;

public static transient final String HOME = "Home";

public static final String PERSONAL_MOBILE = "Personal Mobile";

public static final String OFFICE = "Office";

public static final String WORK_MOBILE = "Work Mobile";

public static final String FAX = "Fax";

public static final String PAGER = "Pager";

public static final String TOLL_FREE = "Toll Free";

public static final String OTHER = "Other";

String countryCode;

String areaCode;

String subscriberNubmer;

String extension;

Answer 1

好了，我终于找到答案了。映射不会根据此表自动反序列化

我必须添加一个自定义的MessageBodyReader来读取字符串。因为我已经有了一个可以工作的单元测试来读取字符串,所以添加正确的类和注释就很简单了,然后一切都正常了：

@Consumes("application/json")
@Provider
public class PersonReader 
 implements MessageBodyReader<Person> {
    ObjectMapper mapper;

    public PersonReader(){
        mapper = new ObjectMapper();
    }

    public boolean isReadable(Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) {
        return type == Person.class;
    }

    public Person readFrom(Class<Person> type, Type genericType, Annotation[] annotations, MediaType mediaType, MultivaluedMap<String, String> httpHeaders, InputStream entityStream) throws IOException, WebApplicationException {
        Person p = mapper.readValue(entityStream, Person.class);
        return p;
    }
}