Мой @manytoone и @onetoone всегда получают NULL (Spring Boot Java) ⇐ JAVA

[Anonymous]

Я разрабатываю API в Spring Boot, и у меня есть две модели: «ProductModel» и «CategoryModel», которые ссылаются друг на друга по MantoOne и OneTomany. Запрос почтальона на продукт, даже отправляя идентификатор категории правильно, моя категория сохраняется в базе данных как «null» < /p>
Productmodel < /p>
package com.api.business_products_management.models;

import jakarta.persistence.*;

import java.util.UUID;

@Entity
@Table(name = "PRODUCTS")
public class ProductModel {
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private UUID id;

@Column(nullable = false, length = 80)
private String product;

@Column(nullable = true, length = 80)
private String description;

@Column(nullable = false, length = 80)
private Float price;

@Column(nullable = false, length = 80)
private Integer stock;

@ManyToOne
@JoinColumn(name = "category_id")
private CategoryModel category;

public UUID getId() {
return id;
}

public void setId(UUID id) {
this.id = id;
}

public String getProduct() {
return product;
}

public void setProduct(String product) {
this.product = product;
}

public String getDescription() {
return description;
}

public void setDescription(String description) {
this.description = description;
}

public Float getPrice() {
return price;
}

public void setPrice(Float price) {
this.price = price;
}

public Integer getStock() {
return stock;
}

public void setStock(Integer stock) {
this.stock = stock;
}

public CategoryModel getCategory() {
return category;
}

public void setCategory(CategoryModel category) {
this.category = category;
}
}

< /code>
productdto < /p>
package com.api.business_products_management.dtos;

import jakarta.validation.constraints.DecimalMin;
import jakarta.validation.constraints.Min;
import jakarta.validation.constraints.NotBlank;
import jakarta.validation.constraints.NotNull;

import java.util.UUID;

public class ProductDto {
@NotBlank
private String product;

private String description;

@DecimalMin(value = "0.01", inclusive = true)
private Float price;

@NotNull
@Min(value = 0, message = "Stock must be at least {value}")
private Integer stock;

@NotNull
private CategoryDto category;

public String getProduct() {
return product;
}

public void setProduct(String product) {
this.product = product;
}

public String getDescription() {
return description;
}

public void setDescription(String description) {
this.description = description;
}

public Float getPrice() {
return price;
}

public void setPrice(Float price) {
this.price = price;
}

public Integer getStock() {
return stock;
}

public void setStock(Integer stock) {
this.stock = stock;
}

public CategoryDto getCategory() {
return category;
}

public void setCategory(CategoryDto category) {
this.category = category;
}
}

< /code>
productController < /p>
package com.api.business_products_management.controllers;

import com.api.business_products_management.dtos.ProductDto;
import com.api.business_products_management.models.ProductModel;
import com.api.business_products_management.services.ProductService;
import jakarta.validation.Valid;
import org.springframework.beans.BeanUtils;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;

@RestController
@CrossOrigin(origins = "*", maxAge = 3600)
@RequestMapping("/product")
public class ProductController {

final ProductService productService;

public ProductController (ProductService productService) {
this.productService = productService;
}

@PostMapping
public ResponseEntity saveProduct (@RequestBody @Valid ProductDto productDto) {
var productModel = new ProductModel();
BeanUtils.copyProperties(productDto, productModel);
return ResponseEntity.status(HttpStatus.CREATED).body(productService.save(productModel));
}
}

< /code>
CategoryModel < /p>
package com.api.business_products_management.models;

import jakarta.persistence.*;

import java.util.List;
import java.util.UUID;

@Entity
@Table(name = "CATEGORIES")
public class CategoryModel {
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private UUID id;

@Column(nullable = false, length = 80)
private String name;

@Column(nullable = true, length = 80)
private String description;

@OneToMany(mappedBy = "category")
private List products;

public UUID getId() {
return id;
}

public void setId(UUID id) {
this.id = id;
}

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

public String getDescription() {
return description;
}

public void setDescription(String description) {
this.description = description;
}

public List getProducts() {
return products;
}

public void setProducts(List products) {
this.products = products;
}
}

< /code>
CategoryDto < /p>
package com.api.business_products_management.dtos;

import com.api.business_products_management.models.ProductModel;
import jakarta.validation.constraints.NotBlank;

import java.util.List;
import java.util.UUID;

public class CategoryDto {

private UUID id;

@NotBlank
private String name;

@NotBlank
private String description;

private List productIds;

public UUID getId() {
return id;
}

public void setId(UUID id) {
this.id = id;
}

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

public String getDescription() {
return description;
}

public void setDescription(String description) {
this.description = description;
}

public List getProductIds() {
return productIds;
}

public void setProductIds(List productIds) {
this.productIds = productIds;
}
}

< /code>
Обновление: я попытался реализовать Mapstruct, как ответил пользователь, но теперь он возвращает ошибку < /p>
***************************
APPLICATION FAILED TO START
***************************

Description:

Parameter 1 of constructor in com.api.business_products_management.controllers.CategoryController required a bean of type 'com.api.business_products_management.mappers.CategoryMapper' that could not be found.

Action:

Consider defining a bean of type 'com.api.business_products_management.mappers.CategoryMapper' in your configuration.

Process finished with exit code 1



Подробнее здесь: https://stackoverflow.com/questions/755 ... -boot-java