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我在春天web應用程序和AJAX背後叫下面的異常火災:傑克遜例外/休眠web應用
com.fasterxml.jackson.databind.JsonMappingException: failed to lazily initialize a collection of role: com.domain.entities.Person.followerd, could not initialize proxy - no Session
父實體:
@Entity
public class Person {
@OneToMany(mappedBy="follower")
@JsonIgnore
private List<FollowerPerson> followerd;
....
@ElementCollection(fetch = FetchType.EAGER)
@CollectionTable(name="phone", [email protected](name="person"))
protected List<Phone> phones;
}
FollowerPerson實體
@Entity
public class FollowerPerson implements Serializable {
@EmbeddedId
private FollowerPk id;
@MapsId("std")
@ManyToOne
private Person std;
@MapsId("follower")
@ManyToOne
private Person follower;
....
}
在我的AppConfig我用這個txManager彈簧+冬眠(JPA爲主):
@Bean
public PlatformTransactionManager txManager() {
JpaTransactionManager jpaTransactionManager = new JpaTransactionManager(
getEntityManagerFactoryBean().getObject());
return jpaTransactionManager;
}
當Ajax調用試圖識別的findAll DAO方法執行後的名單,看起來所有人
當我與註釋取指令= FetchType.EAGER 的其他異常,而不是會出現這個屬性的例外發生:
cannot simultaneously fetch multiple bags: [com.domain.entities.Person.followerd, com.domain.entities.Person.phones]
請幫助