避免加入类spring boot的不需要的字段

Question

我是 Spring Boot 及其实现的新手

遇到问题：我必须model classes songs , movies

movieid 属于歌曲类的位置，我将这张表加入了电影

在控制器中如何实现排除movie的所有字段，除了movieid和title。

我的控制器类是

@RestController
@RequestMapping("api")
public class SongsController {

@Autowired
SongsRepository songsRepository;

    @RequestMapping(value = "/Songs", method = RequestMethod.GET)
    public ResponseEntity<List<Songs>> getSongsList(){


        return new ResponseEntity<>(songsRepository.findAll(), HttpStatus.OK);}

songs class has (id , movieid, songtitile.....)
movie class has (movieid, moviename, ..........................)

有人实现了这个库https://github.com/monitorjbl/json-view

@Entity
public class Songs {

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Long    id;
    private String songTitle;
    @ManyToOne
    @JoinColumn(name = "movieId")
    private MoviesInfo moviesInfo;
    private int year;
    private List<String> singers;
    private List<String> lyricists;
    private float length;
....}}



@Entity
public class Movies {


    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Long movieId;
    private String title;
    private String year;
    private String director;
    private String genre;
...}}

Answer 1

您可能应该使用弹簧投影。它旨在完全按照您的要求进行。

看看projections docs