spring validation with @Valid
I'm validating incoming attribute, but the validator catches even the other pages not annotated with @Valid
@RequestMapping(value = "/showMatches.spr", method = RequestMethod.GET)
public ModelAndView showMatchPage(@ModelAttribute IdCommand idCommand)
//etc
When I access page /showMatches.spr
I get the error org.springframework.web.util.N开发者_如何转开发estedServletException: Request processing failed; nested exception is java.lang.IllegalStateException: Invalid target for Validator [cz.domain.controller.Controllers$1@4c25d793]: cz.domain.controller.IdCommand@486c1af3
,
protected void initBinder(WebDataBinder binder) {
binder.setValidator(new Validator() {
// etc.
}
Spring isn't going to validate your IdCommand
, but WebDataBinder
doesn't allow you to set a validator that doesn't accept the bean being bound.
If you use @InitBinder
, you can explicitly specify the name of the model attribute to be bound by each WebDataBinder
(otherwise your initBinder()
method is applied to all attributes), as follows:
@RequestMapping(...)
public ModelAndView showMatchPage(@ModelAttribute IdCommand idCommand) { ... }
@InitBinder("idCommand")
protected void initIdCommandBinder(WebDataBinder binder) {
// no setValidator here, or no method at all if not needed
...
}
@RequestMapping(...)
public ModelAndView saveFoo(@ModelAttribute @Valid Foo foo) { ... }
@InitBinder("foo")
protected void initFooBinder(WebDataBinder binder) {
binder.setValidator(...);
}
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