春季表单Ajax请求+休眠验证

我总是使用@Valid和BindingResult来验证表单域。现在使用基于this文章的Ajax，不可能使用BindingResult而不是HttpServletResponse，因为这会导致请求错误（HTTP错误代码400）。春季表单Ajax请求+休眠验证

如何验证我的表单字段？

@RequestMapping(value = "/save.html", params = "json", method = RequestMethod.POST) 
    public @ResponseBody Map<String, ? extends Object> saveJSON(@RequestBody Location location, /* BindingResult result, */ HttpServletResponse response) 
    { 
    return Collections.singletonMap("foo", "foobar"); 
    }

这是没有Ajax的老路上：

@RequestMapping(value = "/save.html", method = RequestMethod.POST) 
    public String save(@ModelAttribute("location") @Valid Location location, BindingResult result, Map<String, Object> map) 
    { 
    Location l; 
    if ((l = service.findByTitle(location.getTitle())) != null) 
    { 
     if (location.getId() != l.getId()) 
     { 
     result.addError(new FieldError("location", "title", messageSource.getMessage("Unique.location.title", null, null))); 
     } 
    } 

    if (result.hasErrors()) 
    { 
     return "locationform"; 
    } 

    service.save(location); 
    return "redirect:/locations/index.html"; 
    }

编辑

想这一点，但没有errors成员离开形式填充在其中包含true结果（这一点应引起@NotEmpty Constraint message）

@RequestMapping(value = "/save.html", params = "json", method = RequestMethod.POST) 
    public @ResponseBody Map<String, ? extends Object> saveJSON(@RequestBody Location location, HttpServletResponse response, Map<String, Object> map) 
    { 
    BindingResult result = new BeanPropertyBindingResult(location, ""); 
    if (result.hasErrors()) map.put("errors", true); 
    map.put("foo", "foobar"); 
    return map; 
    }

来源

2012-02-12 dtrunk

哪个版本的春天你用3.0还是3.1？ – Ralph 2012-02-12 19:17:36

@Ralph我使用弹簧3.1 – dtrunk 2012-02-12 19:30:01

似乎你正在使用hibernate验证器。如果您的控制器所以试试这个

：

//other imports 
import javax.validation.Validator; 
@Controller() 
class MyController{ 

    @autowire() 
    @qualifier("myValidator") 
    private Validator validator; 
    public Validator getValidator() { 
     return mValidator; 
    } 

    public void setValidator(Validator validator) { 
     this.mValidator = validator; 
    } 

    @RequestMapping(value = "/save.html", params = "json", method = RequestMethod.POST) 
    public @ResponseBody Map<String, ? extends Object> saveJSON(@RequestBody Location location, HttpServletResponse response) 
    { 
     Set<ConstraintViolation<Location>> errors = getValidator().validate(location); 
     Map<String, String> validationMessages = new HashMap<String, String>(); 
     if(!errors.isEmpty()) 
     { 
      //this map will contain the validation messages 
      validationMessages = validationMessages(errors); 

      //probably you would like to send the errors back to client 
      return validationMessages ; 
     } 
     else 
     { 
      //do whatever you like to do with the valid bean 

     } 
    } 

    public Map<String, String> validationMessages(Set<ConstraintViolation<Location>> failures) { 
     Map<String, String> failureMessages = new HashMap<String, String>(); 
     for (ConstraintViolation<Location> failure : failures) { 

       failureMessages.put(failure.getPropertyPath().toString(), failure.getMessage()); 
     } 
     return failureMessages; 
    } 



}

在 Spring上下文文件

添加以下豆

<beans:bean id="myValidator" class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean" />

希望它能帮助:)

来源

2012-02-13 09:38:58

它像一个魅力。非常感谢！ – dtrunk 2012-02-13 12:59:27

春季表单Ajax请求+休眠验证

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