Question

Good day!

I used the Struts2 xml validation as instructed in this website.

The problem is when I clicked the submit button twice. The error message also appears twice…

My question is… how to clear the first error message before another action is processed to accommodate new set of error messages.

Thank you in advance.

Answer 1

There is a validator interceptor in the default stack. You just need to use that and using that is very simple. Just make a method in your action class by the name public void validate(). Within that validate() you can access the fields using their getters & then put the required validation onto them.

Also, with this implementation you would not have to worry about the multiple messages being shown, because it will show only the message what you set in the addFieldError method and removes any previously kept messages.

NOTE: Be sure to use getters of the variables in your validate(), because the variables in the action are not set at the time this interceptor is invoked.

Here is a link to a very nice tutorial.

http://www.vaannila.com/struts-2/struts-2-example/struts-2-validation-example-1.html