Spring jpa repository find all

Question

I'm trying to execute this method:

@GetMapping("/all")
public Iterable<AspsortObject> getallasp()
{
    return ar.findAll();
}

but I get this error:

at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:722) ~[jackson-databind-2.10.3.jar:2.10.3]
    at com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:166) ~[jackson-databind-2.10.3.jar:2.10.3]
    at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:727) ~[jackson-databind-2.10.3.jar:2.10.3]
    at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:722) ~[jackson-databind-2.10.3.jar:2.10.3]
    at com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:166) ~[jackson-databind-2.10.3.jar:2.10.3]
    at com.fasterxml.jackson.databind.ser.std.CollectionSerializer.serializeContents(CollectionSerializer.java:145) ~[jackson-databind-2.10.3.jar:2.10.3]
    at com.fasterxml.jackson.databind.ser.std.CollectionSerializer.serialize(CollectionSerializer.java:107) ~[jackson-databind-2.10.3.jar:2.10.3]

my repository:

@Repository
public interface AspsortRepositori extends CrudRepository<AspsortObject,Long>{

    @Override
    List<AspsortObject> findAll();

}

What should I to do to resolve this error and show all data in my front end parti?

Answer 1

Hello when i added @JsonIgnore in my entity

@Entity
@Table(name="aspsortobject")
public class AspsortObject {
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private long id;

    @JsonIgnore
    @ManyToOne(cascade = CascadeType.PERSIST)
    @JoinColumn(name = "rfpid")
    private Rfpobject rfpid;
    private String requestid;
    private String aspart;
    private String aspname;
    private String asporganisation;
    private String aspsort;
    public AspsortObject() {
        super();
    }