@GetMapping("/export/products")
public void exportProductsToExcel(HttpServletResponse response) throws IOException, IllegalAccessException {

  var products = dataService.findAllProduct();

  ExcelExporterService excelExporterService = new ExcelExporterService();

  excelExporterService.export(response, "Produtos", products);
}

@Target(ElementType.FIELD)
@Retention(RetentionPolicy.RUNTIME)
public @interface ExportableField {

  public String name() default "";
  
}

public class Product {

  @ExportableField(name = "Código")
  private Long code;
  
  @ExportableField(name = "Nome do produto")
  private String description;
  
  @ExportableField(name = "Preço")
  private Double price = 0.0;
  
  @ExportableField(name = "Categoria")
  private Category category;
  
  @ExportableField()
  private Stock stock;
  
}