相关疑难解决方法(0)

在尝试将具有双向关联的JPA对象转换为JSON时,我不断获取

org.codehaus.jackson.map.JsonMappingException: Infinite recursion (StackOverflowError)

我找到的只是这个线程,基本上建议避免双向关联.有没有人对这个春天的bug有一个解决方法？

------编辑2010-07-24 16:26:22 -------

Codesnippets:

业务对象1:

@Entity
@Table(name = "ta_trainee", uniqueConstraints = {@UniqueConstraint(columnNames = {"id"})})
public class Trainee extends BusinessObject {

    @Id
    @GeneratedValue(strategy = GenerationType.TABLE)
    @Column(name = "id", nullable = false)
    private Integer id;

    @Column(name = "name", nullable = true)
    private String name;

    @Column(name = "surname", nullable = true)
    private String surname;

    @OneToMany(mappedBy = "trainee", fetch = FetchType.EAGER, cascade = CascadeType.ALL)
    @Column(nullable = true)
    private Set<BodyStat> bodyStats;

    @OneToMany(mappedBy = "trainee", fetch = FetchType.EAGER, …

我正在使用Hibernate将一个小型数据库加载到表示表并与数据库交互的某些类中.一切都很好,我真的可以看到所有结果......而且我没有任何空字段,所有这些都被使用了.

这里我展示了"主"类(表).

import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;

import org.codehaus.jackson.annotate.JsonAutoDetect;
import org.codehaus.jackson.annotate.JsonProperty;

@JsonAutoDetect
public class Advertisement
{
    @Id
@GeneratedValue(strategy=GenerationType.AUTO)
public int id;
public SessionT session;
public int idRoom;
public String image;

public Advertisement()
{

}
/* Getters and Setters */
    @JsonProperty
public int getID() /* Get example */
{
    return this.id;
}
}

并且

@JsonAutoDetect
public class SessionT
{
@Id
@GeneratedValue(strategy=GenerationType.AUTO)
public int id;
public int iStatus;
public String sStatus;
public Date dtDateStart;
public Date dtDateEnd;
public boolean bhide;
/* …