在一个动作中将springmvc jsr303验证器与spring WebDataBinder验证器共存 [英] springmvc jsr303 validator co-exist with spring WebDataBinder validator in one action
问题描述
由于springmvc 3.x现在支持jsr303和旧的Spring样式验证器,因此我想在示例应用程序中混合使用它们.但是对于指定的控制器仅启用一种方法,是spring框架或JSR标准的限制吗?
Since springmvc 3.x now supports jsr303 and old spring style validator, i want to mix them in my sample apps. But there is only one method enabled for a specified controller, is that the limit of spring framework or JSR standard?
这是我的示例代码.
User.java代表域模型,使用JSR303进行验证.
User.java, stands for the domain model, uses JSR303 for validation.
public class User{
@Size(max = 16, message = "user loginId max-length is 16")
private String loginId;
//omit getter and setter
}
UserValidator.java,实现org.springframework.validation.Validator
接口以支持用户验证.
UserValidator.java, implements the org.springframework.validation.Validator
interface to support user validation.
public class UserValidator implements Validator {
private UserService userService;
public boolean supports(Class<?> clazz) {
return User.class.isAssignableFrom(clazz);
}
public void validate(Object target, Errors errors) {
User u = (User) target;
// loginName check for new user
if (u.getUserId() == null && !userService.isLoginIdUnique(u.getLoginId(), null)) {
errors.rejectValue("loginId", "user.loginId.unique", new Object[] { u.getLoginId() }, null);
}
}
@Autowired
public void setUserService(UserService userService) {
this.userService = userService;
}
}
UserController.java,使用InitBinder
批注将UserValidator
注入到WebDataBinder
中.
UserController.java, uses InitBinder
annotation to inject UserValidator
into WebDataBinder
.
@Controller("jspUserController")
@RequestMapping("/sys/users")
public class UserController {
private UserValidator userValidator;
@Autowired
public void setUserValidator(UserValidator userValidator) {
this.userValidator = userValidator;
}
/*@InitBinder("user")
public void initBinderUser(WebDataBinder binder) {
binder.setValidator(userValidator);
}*/
@RequestMapping(value = "/save")
public String save(@Valid User user, BindingResult bindingResult, Model model, HttpServletRequest request) {
if (bindingResult.hasErrors()) {
return "/sys/user/edit";
}
userService.saveUser(user);
return "redirect:/sys/users/index";
}
}
如果我取消注释UserController中的@InitBinder("user")
,将禁用JSR303验证.而当前注释的代码将使用JSR验证器进行验证.
谁能给我一种解决方法,将它们混合在一个控制器中?
If I uncomment the @InitBinder("user")
in UserController, the JSR303 validation will be disabled. While the current commented code will use JSR validator to do the validation.
Can anyone give me a workaround to mix them in one controller?
推荐答案
您可以直接使用验证器,也可以让全局LocalValidatorFactoryBean(JSR-303)发挥作用:
You can use your validator directly and let the global LocalValidatorFactoryBean (JSR-303) do its work as well:
@Controller("jspUserController")
@RequestMapping("/sys/users")
public class UserController {
private UserValidator userValidator;
@Autowired
public void setUserValidator(UserValidator userValidator) {
this.userValidator = userValidator;
}
@RequestMapping(value = "/save")
public String save(@Valid User user, BindingResult bindingResult, Model model, HttpServletRequest request) {
this.userValidator.validate(user, bindingResult);
if (bindingResult.hasErrors()) {
return "/sys/user/edit";
}
userService.saveUser(user);
return "redirect:/sys/users/index";
}
}
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