onSubmit?

[karol_lo]

I created my controller using some tutorial example, and there is some final part of code that I'm not sure how to interpret

Map model = new HashMap();
		model.put("error", "project " + projectNameCommand.getNazwaProjektu() + " doesn't exist");

- in this part I put detected errors to my model HashMap

return this.showForm(request, response, errors, model);

- but what about this. Do I suppose to have some view ( for errors ) to display those errors. If yes, how to call that view. If no, can anybody tell me how to resolve that
thx...a lot

[EndlessWinter]

In fact, this is not the best solution, you better use Validator instead.
Your "error" object is a simple model property, so you should display it yourself. Something like this:
<c:out value="${error}"/>.
But usually you want to show errors after the form submission, and Validator approach is the best choice for doing this.