春天验证从来没有所谓的

Question

我想确认一些信息，所以我加了验证，并在POST方法的参数使用@Valid：

@Controller 
@RequestMapping("/user.htm") 
public class UserController { 

    @Autowired 
    private IUserService userService; 

    @RequestMapping(method = RequestMethod.GET) 
    public String userInfo(Model model) { 
     .... 
     return "user"; 
    } 

    @RequestMapping(method = RequestMethod.POST) 
    public String userInfoResult(@Valid @ModelAttribute UserForm userForm, BindingResult result, Model model) { 

     UserInfo stat = userService.getStatitisque(userForm.getSearchCritera()); 
     userForm.setListeExpediteur(listeExpediteur); 

     userForm.setUserInfo(stat); 
     model.addAttribute("userForm", userForm); 
    }  
} 

public class UserFormValidator implements Validator { 

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

    @Override 
    public void validate(Object o, Errors errors) { 
     UserForm userForm = (User) o; 
     ... 
    } 
} 

当我调试，我从来没有在UserFormValidator类。

我是否需要在这些文件中添加内容？

• web.xml
• applicationContext.xml
• dispatcher-servlet.xml

Answer 1

您需要添加验证在@InitBinder方法：通过XML

@InitBinder(value="YourFormObjectName") 
protected void initBinder(WebDataBinder binder) { 
    binder.setValidator(new FooValidator()); 
} 

或全局：

<mvc:annotation-driven validator="globalValidator"/> 

参考：

• 5.7.4.2 Configuring a Validator for use by Spring MVC

Answer 2

5.7.4.3配置JSR-303验证使用由Spring MVC

随着JSR-303，单一的javax .validation.Validator实例通常会验证声明验证约束的所有模型对象。要使用Spring MVC配置JSR-303支持的Validator，只需将类似Hibernate Validator的JSR-303提供程序添加到类路径。 Spring MVC将检测到它并自动启用跨所有控制器的JSR-303支持。

<mvc:annotation-driven/> 

有了这个最低配置，任何时候遇到@Valid @Controller输入，这将是由JSR-303供应商进行验证。反过来，JSR-303将执行针对输入声明的任何约束。任何ConstraintViolations将自动暴露为BindingResult可由标准Spring MVC窗体标记呈现的错误。

Answer 3

@Controller 
@RequestMapping("/user.htm") 
public class UserController { 
@Autowired 
private IUserService userService; 

@RequestMapping(method = RequestMethod.GET) 
public String userInfo(Model model) { 
    .... 
    return "user"; 
} 

@RequestMapping(method = RequestMethod.POST) 
public String userInfoResult(Model model, 
          @Valid @ModelAttribute UserForm userForm, 
          BindingResult result) { 
    /* 
     add custom validation check to standard validation error 
     (if not registry UserFormValidator in @InitBinder block) 
    */ 
    new UserFormValidator().validate(userForm, error); 

    // check all validation errors 
    if (errors.hasErrors()) { 
     // go back 
     return userInfo(model); 
    } 

    ... 
    } 
}