形式：错误未在 Spring 中的 JSP 上显示错误

Question

I want to create 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.

Answer 1

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

Answer 2

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)