我已經構建了我的控制器、客戶端和地址類（模型）以及用于索引和添加的模板。當我嘗試測試驗證時，spring 返回：出現意外錯誤（類型=內部服務器錯誤，狀態=500）。在組 [javax.validation.groups.Default, ] 約束違規列表期間，類 [com.pooltracker.models.Address] 的驗證失?。篬 ConstraintViolationImpl{interpolatedMessage='Invalid', propertyPath=zipCode, rootBeanClass=class com .pooltracker.models.Address, messageTemplate='Invalid'} ConstraintViolationImpl{interpolatedMessage='may not be null', propertyPath=state, rootBeanClass=class com.pooltracker.models.Address, messageTemplate='{javax.validation.constraints.NotNull .message}'} ConstraintViolationImpl{interpolatedMessage='不能為空', propertyPath=street, rootBeanClass=class com.pooltracker.models.Address, messageTemplate='不能為空'我了解到 hibernate 無法處理驗證地址類。我偶然發現了 bean 驗證的主題。我對此很陌生，并試圖找到解決我的問題的最佳方法，而不會在目前的兔子洞中走得太遠。下面是我的控制器和模型。@Controller@RequestMapping("clients")public class ClientController {    @Autowired    private ClientDao clientDao;    @Autowired    private AddressDao addressDao;    @RequestMapping(value = "")    public String index(Model model) {                model.addAttribute("clients", clientDao.findAll());        model.addAttribute("title", "My Clients");                return "clients/index";    }    @RequestMapping(value = "add", method = RequestMethod.GET)    public String displayAddClientForm(Model model) {                model.addAttribute("title", "Add Client");        model.addAttribute(new Client());        return "clients/add";    }    @RequestMapping(value = "add", method = RequestMethod.POST)    public String processAddClientForm(@ModelAttribute @Valid Client newClient,                                       Errors errors, Model model) {         if (errors.hasErrors()) {            model.addAttribute("title", "Add Client");            model.addAttribute("client", newClient);            return "clients/add";        }                clientDao.save(newClient);        return "redirect:";    }}