<tbody>
            <tr data-th-each="product : ${products}">
                <!--<td><input hidden="hidden" name="id" th:value="${product.id}" /></td>-->
                <td th:text="${product.name}"></td>
                <td th:text="${product.price}"></td>
                <td th:each="category : ${product.categories}"></td>
                <td th:text="${category.name}"></td>
                <td th:text="${product.description}"></td>
                <td th:text="${product.shippingWeight}"></td>
                <td th:text="${product.quantity}"></td>
                <td>delete</td>
            </tr>
            </tbody>

@NoArgsConstructor
@AllArgsConstructor
@Getter
@Setter
@Entity
@Table(name = "products")
public class Product {

@Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(name = "product_id")
private Long id;
private String name;
private BigDecimal price;
@ManyToMany(cascade = CascadeType.ALL,mappedBy = "products")
private List<Category> categories=new ArrayList<>();
private double shippingWeight;
private boolean isAvailable;
private String description;
private int quantity;
@Transient
private MultipartFile image;

@AllArgsConstructor
@NoArgsConstructor
@Getter
@Setter
@Entity
@Table(name = "categories")
public class Category {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(name = "category_id")
private Long id;

private String name;

private String description;

@ManyToMany(cascade = CascadeType.ALL)
@JoinTable(name = "join_category_product", joinColumns = {@JoinColumn(name = "category_id", referencedColumnName = "category_id")},
        inverseJoinColumns = {@JoinColumn(name = "product_id", referencedColumnName = "product_id")})
private List<Product> products=new ArrayList<>();
@Transient
private MultipartFile image;

@GetMapping("/productList")
public String productList(Model model) {
    List<Product> product = productService.getProducts();
    model.addAttribute("products",product);
    return "productList";