我正在嘗試使用@JsonView注釋從Spring中的對(duì)象反序列化幾個(gè)字段。但是，我將注釋添加到我的方法中，而不是反序列化指定字段，而是返回一個(gè)空對(duì)象。這是我的POJO：@Entitydata class Album(        @JsonView(View.AlbumSummary::class)        val title: String,        @JsonView(View.AlbumSummary::class)        @ManyToMany        val artists: List<Account>,        val dateReleased: LocalDate,        val genre: String = GENRE_NA,        @OneToMany(mappedBy = "album")        val songs: List<Song> = ArrayList(),        val description: String = "")而且，實(shí)現(xiàn)@JsonView注釋的方法：@JsonView(View.AlbumSummary::class)@RequestMapping("/home-recommendations/{userId}")fun getHomeRecommendations(@PathVariable userId: String): List<Recommendation> {    val recommendations = ArrayList<Recommendation>()    val user = accountRepository.findById(userId).get()    val followingArtists = user.following.filter {        it.following.isArtist    }    val suggestedArtists = followingArtists.shuffled().take(Random().nextInt(11) + 10)    for (i in 0 until suggestedArtists.size) {        val suggestedArtist = suggestedArtists[i].following        val recommendedAlbums = suggestedArtist.albums.shuffled().take(Random().nextInt(6) + 10)        recommendations.add(Recommendation("Because you listened to ${suggestedArtist.fullName}", Recommendation.TYPE_ALBUM, albums = recommendedAlbums))    }    return recommendations}