使用Spring Data JPA保存整数数组

Question

@Type(type = "int-array")
@Column(name = "location", columnDefinition = "integer[]")  
private Integer[] locations;    

@Entity
@Table(name = "location_master")
public class Location implements Serializable {
    private static final long serialVersionUID = 1L;
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private int id;
    @Column(name = "location_name")
    private String locationName;
}

<tr>
    <td>Selected Locations</td>
    <td>[[${office.locations[0].locationName}]]</td>
</tr>

出现以下错误：-

org.springframework.expression.spel.spelevaluationexception：EL1008E:在“java.lang.integer”类型的对象上找不到属性或字段“location name”-可能不是公共的或无效的？

Answer 1

org.springframework.expression.spel.spelevaluationexception：EL1008E:在“java.lang.integer”类型的对象上找不到属性或字段“location name”-可能不是公共的或无效的？

该错误与使用hibernate-types项目的int-array无关。

错误消息与您用于设置LocationName的Spring表达式语言有关，该语言是String属性。

[[${office.locations[0].locationName}]]

@OneToMany(mappedBy="office", cascade = CascadeType.ALL, orphanRemoval = true)
private List<Location> locations = new ArrayList<>();  

@ManyToOne(fetch = FetchType.LAZY)
private Office office;