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我需要帮助。我想在 Spring 3 MVC 中使用自定义验证器验证表单输入。一切正常，但在出现错误时不会在表单上显示错误

这是控制器

public class ContactController {
 @ModelAttribute("Contact")
 public Contact getContactObject() {
      return new Contact();
     }


@RequestMapping(value = "/addContact", method = RequestMethod.POST)
public String processValidatinForm(@Valid Contact contact, BindingResult result, Map model,Errors e) {
    UserValidator validator = new UserValidator();
      validator.validate(contact, result);

    if (result.hasErrors()) {
        System.out.println("found Errors");
        return "contact";
    }
    // Add the saved validationForm to the model
    model.put("Contact", contact);
    return "successs";
}

@RequestMapping("/contacts")
public String showValidatinForm(Map model) {
    Contact contact = new Contact();
    model.put("Contact", contact);
    return "contact";
}

} 用户验证器

    public class UserValidator implements Validator {

   @Override
        public boolean supports(Class clazz) {
       return Contact.class.isAssignableFrom(clazz);
   }

   @Override
   public void validate(Object target, Errors errors) {
      ValidationUtils.rejectIfEmptyOrWhitespace(errors, "userName", "Enter user name");
      ValidationUtils.rejectIfEmptyOrWhitespace(errors, "age", "Enter Age");
      ValidationUtils.rejectIfEmptyOrWhitespace(errors, "password", "Enter password.");

   }

}

这是表单jsp页面

 <form:form method="post" action="addContact.html" commandName="Contact">

<table>

<tr>
<td>User Name:<font color="red"><form:errors path="userName" /></font></td>


<tr>
<td><form:input path="userName" /></td>
</tr>

<tr>
<td>Age:<font color="red"><form:errors path="age" /></font></td>
</tr>

<tr>
<td><form:input path="age" /></td>
</tr>

<tr>
<td>Password:<font color="red"><form:errors path="password" /></font></td>
</tr>

<tr>
<td><form:password path="password" /></td>
</tr>

<tr>
<td><input type="submit" value="Submit" /></td>
</tr>

</table>

</form:form>

怎么做才对？

谢谢您的回复。

4

1 回答 1

0

我看到验证部分是正确的。确保在出现错误时从控制器返回正确的视图。

于 2012-09-18T12:47:00.173 回答