Discussion :

[lnquaidorsay]

Bonjour à tous,

J'ai un problème avec l'envoi de mes données de mon formulaire angulaire vers mon contrôleur Spring boot:

Je reçois cette erreur :

WARN 15020 --- [nio-8181-exec-2] .c.j.MappingJackson2HttpMessageConverter : Failed to evaluate Jackson deserialization for type [[simple type, class com.biblio.fr.biblio.entite.BookDTO]]: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'com.biblio.fr.biblio.entite.BookDTODeserializer': Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.biblio.fr.biblio.entite.BookDTODeserializer]: No default constructor found; nested exception is java.lang.NoSuchMethodException: com.biblio.fr.biblio.entite.BookDTODeserializer.<init>()


WARN 15020 --- [nio-8181-exec-2] .c.j.MappingJackson2HttpMessageConverter : Failed to evaluate Jackson deserialization for type [[simple type, class com.biblio.fr.biblio.entite.BookDTO]]: com.fasterxml.jackson.databind.JsonMappingException: Class com.biblio.fr.biblio.entite.BookDTODeserializer has no default (no arg) constructor


WARN 15020 --- [nio-8181-exec-2] .w.s.m.s.DefaultHandlerExceptionResolver : Resolved [org.springframework.web.HttpMediaTypeNotSupportedException: Content type 'application/json;charset=UTF-8' not supported]

Contrôleur :

Code :

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@RequestMapping(value = "/addBook", method = RequestMethod.POST, produces = "application/json")
	@ApiOperation(value = "Add a new Book in the Library", response = BookDTO.class)
	@ApiResponses(value = { @ApiResponse(code = 409, message = "Conflict: the book already exist"),
			@ApiResponse(code = 201, message = "Created: the book is successfully inserted"),
			@ApiResponse(code = 304, message = "Not Modified: the book is unsuccessfully inserted") })
	public ResponseEntity<BookDTO> createNewBook(@RequestBody BookDTO bookDTORequest) {
		// , UriComponentsBuilder uriComponentBuilder
		Book existingBook = bookService.findBookByIsbn(bookDTORequest.getIsbn());
		if (existingBook != null) {
			return new ResponseEntity<BookDTO>(HttpStatus.CONFLICT);
		}
		Book bookRequest = mapBookDTOToBook(bookDTORequest);
		Book book = bookService.saveBook(bookRequest);
		if (book != null && book.getId() != null) {
			BookDTO bookDTO = mapBookToBookDTO(book);
			return new ResponseEntity<BookDTO>(bookDTO, HttpStatus.CREATED);
		}
		return new ResponseEntity<BookDTO>(HttpStatus.NOT_MODIFIED);
 
	}
 
    private BookDTO mapBookToBookDTO(Book book) {
		ModelMapper mapper = new ModelMapper();
		BookDTO bookDTO = mapper.map(book, BookDTO.class);
		if (book.getCategory() != null) {
			bookDTO.setCategory(new CategoryDTO(book.getCategory().getCode(), book.getCategory().getLabel()));
		}
		return bookDTO;
	}
 
@JsonIgnoreProperties(ignoreUnknown = true)
@JsonDeserialize(using = BookDTODeserializer.class)
@Data
@AllArgsConstructors
public class BookDTO implements Comparable<BookDTO> {
	@ApiModelProperty(value = "Book id")
	private Integer id;
 
	@ApiModelProperty(value = "Book title")
	private String title;
 
	@ApiModelProperty(value = "Book isbn")
	private String isbn;
 
	@ApiModelProperty(value = "Book release date by the editor")
	private LocalDate releaseDate;
 
	@ApiModelProperty(value = "Book register date in the library")
	private LocalDate registerDate;
 
	@ApiModelProperty(value = "Book total examplaries")
	private Integer totalExamplaries;
 
	@ApiModelProperty(value = "Book author")
	private String author;
 
	@ApiModelProperty(value = "Book category")
	private CategoryDTO category;
 
 
	@Override
	public int compareTo(BookDTO o) {
		return title.compareToIgnoreCase(o.getTitle());
	}
 
	public BookDTO() {
		super();
	}
 
}
 
@Entity
@Data
@AllArgsConstructors
public class Book {
	private static final long serialVersionUID = 425345L;
 
	@Id
	@GeneratedValue(strategy = GenerationType.AUTO)
	private Long id;
 
	private String title;
	private String author;
	private String publisher;
	private String publicationDate;
	private String language;
	private String category;
	private int numberOfPages;
	private String format;
	private String isbn;
	private double shippingWeight;
	private double listPrice;
	private double ourPrice;
	private boolean active = true;
 
	@Column(columnDefinition = "text")
	private String description;
	private int inStockNumber;
 
	@Transient
	private MultipartFile bookImage;
}
 
@Data
@AllArgsConstructors
@JsonDeserialize(using = CategoryDTODeserializer.class)
public class CategoryDTO implements Comparable<CategoryDTO> {
	public CategoryDTO() {
	}
 
	public CategoryDTO(String code, String label) {
		super();
		this.code = code;
		this.label = label;
	}
 
	@ApiModelProperty(value = "Category code")
	private String code;
 
	@ApiModelProperty(value = "Category label")
	private String label;
 
}
 
@Entity
@Table(name = "CATEGORY")
public class Category {
	public Category() {
	}
 
	public Category(String code, String label) {
		super();
		this.code = code;
		this.label = label;
	}
 
	private String code;
 
	private String label;
 
	@Id
	@Column(name = "CODE")
	public String getCode() {
		return code;
	}
 
	public void setCode(String code) {
		this.code = code;
	}
 
	@Column(name = "LABEL", nullable = false)
	public String getLabel() {
		return label;
	}
 
	public void setLabel(String label) {
		this.label = label;
	}
}
 
public class BookDTODeserializer extends StdDeserializer<BookDTO> {
 
	@Override
	public BookDTO deserialize(JsonParser p, DeserializationContext ctxt) throws IOException, JsonProcessingException {
		// TODO Auto-generated method stub
		JsonNode node = p.getCodec().readTree(p);
		Integer id = (Integer) ((IntNode) node.get("id")).numberValue();
		String title = node.get("title").asText();
		String isbn = node.get("isbn").asText();
		LocalDate releaseDate = LocalDate.parse(node.get("releaseDate").asText());
		LocalDate registerDate = LocalDate.parse(node.get("registerDate").asText());
		Integer totalExamplaries = (Integer) ((IntNode) node.get("totalExamplaries")).numberValue();
		String author = node.get("author").asText();
		String codeCategory = node.get("code").asText();
		String labelCategory = node.get("label").asText();
 
		return new BookDTO(id, title, isbn, releaseDate, registerDate, totalExamplaries, author,
				new CategoryDTO(codeCategory, labelCategory));
		// return null;
	}
 
	public BookDTODeserializer(Class<?> vc) {
		super(vc);
		// TODO Auto-generated constructor stub
	}
 
	public BookDTODeserializer(JavaType valueType) {
		super(valueType);
		// TODO Auto-generated constructor stub
	}
 
	public BookDTODeserializer(StdDeserializer<?> src) {
		super(src);
		// TODO Auto-generated constructor stub
	}
 
}
 
public class CategoryDTODeserializer extends StdDeserializer<CategoryDTO> {
 
	@Override
	public CategoryDTO deserialize(JsonParser p, DeserializationContext ctxt)
			throws IOException, JsonProcessingException {
		JsonNode node = p.getCodec().readTree(p);
		String codeCategory = node.get("code").asText();
		String labelCategory = node.get("label").asText();
		return new CategoryDTO(codeCategory, labelCategory);
	}
 
	public CategoryDTODeserializer(Class<?> vc) {
		super(vc);
		// TODO Auto-generated constructor stub
	}
 
	public CategoryDTODeserializer(JavaType valueType) {
		super(valueType);
		// TODO Auto-generated constructor stub
	}
 
	public CategoryDTODeserializer(StdDeserializer<?> src) {
		super(src);
		// TODO Auto-generated constructor stub
	}
 
}

et mon appel angular :

Code :

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 saveBook(book: Book): Observable<Book>{
      let headers = new HttpHeaders();
      headers.append('content-type', 'application/json');
      headers.append('accept', 'application/json');
      return this.http.post<Book>(environment.apiUrl+'/rest/book/api/addBook', book, {headers: headers});
     }

Avez - vous une idée ?