如何在表单中显示每个字段的错误消息？

Question

在我的验证器中，我为每个字段添加了一些描述，并希望在表单（.jsp）中显示错误消息，但是当我为每个字段显示消息时，错误消息是相同的，有什么问题，我的代码：

验证

public class StoreValidator implements Validator {

@Override
public boolean supports(Class<?> clazz) {
    return Store.class.equals(clazz);
}

@Override
public void validate(Object target, Errors errors) {
    ValidationUtils.rejectIfEmptyOrWhitespace(errors, "name", "name.empty", "Name field is empty");
    ValidationUtils.rejectIfEmptyOrWhitespace(errors, "address", "address.empty", "Address field is empty");
}

}

控制器

    @Autowired
private StoreValidator storeValidator;

@InitBinder
protected void initBinder(WebDataBinder binder) {
    binder.setValidator(storeValidator);
}

//post method create store
@RequestMapping(value = "/regStoreSuccessful", method = RequestMethod.POST)
public ModelAndView addStorePost(@Valid @ModelAttribute("storeForm") Store storeForm, BindingResult bindingResult, Principal principal, RedirectAttributes redirectAttrs) throws SQLException {
    ModelAndView modelAndView = new ModelAndView("redirect:body");

    storeValidator.validate(storeForm,bindingResult);

    if(bindingResult.hasErrors()) {
        redirectAttrs.addFlashAttribute("error", bindingResult.getFieldError().getDefaultMessage());
        //modelAndView.addObject("storeForm", bindingResult.getFieldError().getDefaultMessage());
  //modelAndView.addObject("storeForm", storeForm);

  //redirectAttrs.addFlashAttribute("errors", bindingResult.getFieldError().getRejectedValue());
        //redirectAttrs.addFlashAttribute("storeForm", storeForm);

    //..
    }
    //..
    }

表格

<form:form method="POST" action="/regStoreSuccessful" commandName="storeForm">
  <table>
  <tr>
    <td><form:label path="name">Name store</form:label></td>
    <td><form:input path="name" /></td>
    <td><form:errors path="name" /></td>
  </tr>
   <tr>
    <td><form:label path="address">Address store</form:label></td>
    <td><form:input path="address" /></td>
    <td><form:errors path="address" /></td>
  </tr>
  </form:form>

我也尝试使用<form:errors path = "name" />，但是没有工作......

Answer 1

您应该在hasErrors方法中的model属性中添加整个对象 并为每个输入单独使用表单：每个输入的错误。

<form:errors path = "name" />
<form:errors path = "address" />

if(bindingResult.hasErrors()) {
    model.addAttribute("storeForm",storeForm);
//..
}