在Java中如何开发简易在线商城首页_商城首页模块开发指南

spring.datasource.url=jdbc:mysql://localhost:3306/shopdb
spring.datasource.username=root
spring.datasource.password=123456
spring.thymeleaf.prefix=classpath:/templates/
spring.thymeleaf.suffix=.html

public interface ProductRepository extends JpaRepository<Product, Long> {
    List<Product> findTop8ByOrderBySalesDesc(); // 热销商品
    List<Product> findTop10ByIsFeaturedTrue();  // 推荐商品
}

@Controller
public class HomeController {

    @Autowired
    private CategoryService categoryService;

    @Autowired
    private ProductRepository productRepository;

    @Autowired
    private BannerService bannerService;

    @GetMapping("/")
    public String home(Model model) {
        model.addAttribute("categories", categoryService.getAll());
        model.addAttribute("hotProducts", productRepository.findTop8ByOrderBySalesDesc());
        model.addAttribute("featuredProducts", productRepository.findTop10ByIsFeaturedTrue());
        model.addAttribute("banners", bannerService.getActiveBanners());
        return "index"; // 对应 templates/index.html
    }
}

<div id="carousel">
  <div th:each="banner : ${banners}">
    <img th:src="${banner.imageUrl}" th:data-link="${banner.url}" />
  </div>
</div>