Question

我使用Spring Boot REST Web服务和Angular 5作为前端，所以我有一个用于休眠的模型类：

@Entity
public class Title {
        private Integer id;
        private String name;
        private Date releaseDate;
        private Time runtime;
        private String storyline;
        private String picture;
        private String rated;
        private String type;
        private Double rating;
        private Integer numberOfVotes;
        private Timestamp inserted;
        private Set<Genre> genres = new HashSet<>();
        private List<TitleCelebrity> titleCelebrities;
        private List<TitleMedia> titleMedia;

        // Basic getters and setter

        @ManyToMany(cascade = { CascadeType.PERSIST, CascadeType.MERGE })
        @JoinTable(name = "title_genre", joinColumns = { @JoinColumn(name = "title_id") }, inverseJoinColumns = { @JoinColumn(name = "genre_id") })
        public Set<Genre> getGenres() {
            return genres;
        }

        public void setGenres(Set<Genre> genres) {
            this.genres = genres;
        }

        @OneToMany(mappedBy = "title", cascade = CascadeType.ALL)
        public List<TitleCelebrity> getTitleCelebrities() {
            return titleCelebrities;
        }

        public void setTitleCelebrities(List<TitleCelebrity> titleCelebrities) {
            this.titleCelebrities = titleCelebrities;
        }

        @OneToMany(mappedBy = "title", cascade = CascadeType.ALL)
        public List<TitleMedia> getTitleMedia() {
            return titleMedia;
        }

        public void setTitleMedia(List<TitleMedia> titleMedia) {
            this.titleMedia = titleMedia;
        }
    }

这是我的REST控制器

@RestController
@RequestMapping("titles")
@CrossOrigin(origins = {"http://localhost:4200"})
public class TitleController {

    private TitleService titleService;

    @Autowired
    public void setTitleService(TitleService titleService) {
        this.titleService = titleService;
    }

    // Api to get all the movies ordered by release date
    @GetMapping("movies")
    public List<Title> getAllMoviesOrderByReleaseDateDesc() {
        return this.titleService.findByTypeOrderByReleaseDateDesc("movie");
    }

    @GetMapping("movies/{id}")
    public Title findById(@PathVariable Integer id) {
        return this.titleService.findById(id);
    }

}

我想要的是，当我向第一个方法“ / movies”发出请求时，我不希望收集Telemedia，但是如果我向第二个方法“ / movies / id”发出请求，则我希望进行收集Telemedia。当然，无论请求是什么，注释@JsonIgnore都会忽略该集合。

Answer 1

在这种情况下，最好创建两个模型；一个代表第一响应，另一个代表第二响应。

您还可以在第二个请求中将集合设置为null，然后再将其发送回。

您不能仅凭@JsonIgnore完成此操作，因为您不能在注释中执行条件逻辑。

Spring Boot动态忽略JPA字段

1 个答案: