无法写入内容：找不到类org.springframework.data.mongodb.core.convert.DefaultDbRefResolver$LazyLoadingInterceptor的序列化程序

简单场景：

@Document(collection = "AUTHOR")
public class Author implements Serializable {

    @Id
    private String id;

    @Field("name")
    private String name;

    public String getId() {return id;}
    public void setId(String id) {this.id = id;}
    public String getName() {return name;}
    public void setName(String name) {this.name = name;}
}
@Document(collection = "BOOK")
public class Book implements Serializable {

    @Id
    private String id;

    @Field("name")
    private String name;

    @DBRef(lazy = true)
    @Field("author")
    private Author author;

    public String getId() {return id;}
    public void setId(String id) {this.id = id;}
    public String getName() {return name;}
    public void setName(String name) {this.name = name;}
    public Author getAuthor() {return author;}
    public void setAuthor(Author author) {this.author = author;}
}

简单测试：

    @Inject
    private BookRepository bookRepository;
    @Inject
    private AuthorRepository authorRepository;

    private MockMvc restBookMockMvc;

    private Book book;
    private Author author;

    @PostConstruct
    public void setup() {
        MockitoAnnotations.initMocks(this);
        BookResource bookResource = new BookResource();
        ReflectionTestUtils.setField(bookResource, "bookRepository", bookRepository);
        this.restBookMockMvc = MockMvcBuilders.standaloneSetup(bookResource).build();
    }

    @Before
    public void initTest() {
        authorRepository.deleteAll();
        author = new Author();
        author.setName("Pedro");
        authorRepository.save(author);

        bookRepository.deleteAll();
        book = new Book();
        book.setName(DEFAULT_NAME);
        book.setAuthor(author);
    }
    @Test
    public void getBook() throws Exception {
        // Initialize the database
        bookRepository.save(book);

        // Get the book
        restBookMockMvc.perform(get("/api/books/{id}", book.getId()))
            .andExpect(status().isOk())
            .andExpect(content().contentType(MediaType.APPLICATION_JSON))
            .andExpect(jsonPath("$.id").value(book.getId()))
            .andExpect(jsonPath("$.name").value(DEFAULT_NAME.toString()))
            .andExpect(jsonPath("$.author.name").value(author.getName().toString()));
    }

返回状态500和复杂错误：

com.fasterxml.jackson.databind.JsonMappingException:无序列化程序 为班级找到 org.springframework.data.mongodb.core.convert.DefaultDbRefResolver$LazyLoadingInterceptor 并且没有发现创建BeanSerializer的属性（以避免 异常，禁用SerializationFeature。失败（在\u空的\u bean上） （通过参考链： com.mycompany.myapp.domain.Book[“author”]->com.mycompany.myapp.domain.author$$enhancerbyglib$$e7a6d2fe[“回调”]）

如果将Book类中的Author设置为eager（lazy==false），则它可以工作。我能做什么？这是MongoDB或Jackson本身的Spring数据中的问题吗

---

我发现了，但似乎没有人在解决这个问题。

您有解决方案吗？另一个成本较低的解决方案是使用DTO。不过，我还是希望这个问题也能得到解决。另外，你可能想看看这个