form:errors not displaying errors on JSP in Spring

I want to cr开发者_JAVA技巧eate simple form which will display errors if input is not proper means if validation fails. I am using spring 3.0 annotations.

I did following things

1 : Created JSP 2 : Created Controller 3 : Created DTO 4 : Created org.springframework.validation.Validator (write an implementation the necessary methods)

int error = bindingResult.getErrorCount() returning the error count and even my page is not being submitted which is expected but my JSP is not showing error messages

I have write on JSP.

Please guide me how to do this.

If i miss on something please let me know i will paste it.

Have a look at this answer for the structure of the controller. The important think is to have a paramter BindingResult and if this binding result contains an error you must return the same view (not redirect) again.

In the jsp code you can use the spring errors tag.

@see Spring Reference chapter 16.2.4.14 The errors tag -- there is an example

I have solved this i have just mentioned dto object name in @ModelAttribute

public void myMethod(@Valid @ModelAttribute**("myDto")** MyDTO myDTO,
        BindingResult bindingResult, ActionResponse response,
        SessionStatus sessionStatus)