Spring Boot中防止递归查询的两种方式

#懒加载配置spring.jpa.properties.hibernate.enable_lazy_load_no_trans=true

@Entity@Table(name = "users")//@JsonIgnoreProperties("roles")public class User implements Serializable { @GeneratedValue(strategy = GenerationType.IDENTITY) @Id private int id; @Column private String name; @Column(name = "created_at") @DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss") private Date createdAt; @ManyToOne @JoinColumn(name = "dep_id") @JsonBackReference //防止关系对象的递归访问 private Department department; @ManyToMany(cascade = {}, fetch = FetchType.EAGER) @JoinTable(name = "user_role", joinColumns = {@JoinColumn(name = "user_id")}, inverseJoinColumns = {@JoinColumn(name = "role_id")}) @JsonBackReference private List<Role> roles = new ArrayList<>(); ......}