How to send nested json object to server using spring mvc + jackson

Question

I have Hotel entity and it has another object called Location.

@Entity
public class Hotel implements Serializable {
      private static final long serialVersionUID = 1L;
      @Id
      @GeneratedValue(strategy = GenerationType.AUTO)
      private Long id;
      String name;
      @OneToOne(fetch=FetchType.LAZY)
      @JoinColumn(name="LOC_ID")
      Location location;
      //GETTER SETTER
  }

Location object like that:

@Entity
public class Location implements Serializable {

    private static final long serialVersionUID = 1L;

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    @Column(name="LOC_ID")
    private Long id;

    String name;

    public Location() {
    }

    public Location(String name) {
        this.name = name;
    }

    public String getName()
    {
        return name;
    }
    public void setName(String name)
    {
        this.name = name;
    }
}

I can send Location object to server ({"name":"MyNewLoc"}). I can send Hotel object to server with only name it's also ok ({"name":"NewHotel"}).

But when I try to send hotel object with name and Location attribute ({"name":"New Hotel","location":{"name":"MyNewLoc"}}), I get 400 POST error and this response;

exception:"org.springframework.http.converter.HttpMessageNotReadableException"

message:"Could not read JSON: Template must not be null or empty! (through reference chain: org.maskapsiz.sosyalkovan.domain.Hotel["location"]); nested exception is com.fasterxml.jackson.databind.JsonMappingException: Template must not be null or empty! (through reference chain: org.maskapsiz.sosyalkovan.domain.Hotel["location"])"

I am using jackson-mapper-asl 1.9.13 and Spring boot.

possible duplicate of How to POST nested entities with Spring Data REST — Alex Shesterov
– Alex Shesterov, Commented Jun 25, 2015 at 12:37

maskapsiz · Accepted Answer · 2015-06-29 07:15:31Z

3

I added @RestResource(exported = false) and it works for me.

@Entity
@RestResource(exported = false)
public class Location implements Serializable {
}

answered Jun 29, 2015 at 7:15

maskapsiz

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