What is @ModelAttribute in Spring MVC?

Question

What is the purpose and usage of @ModelAttribute in Spring MVC?

Answer 1

For my style, I always use @ModelAttribute to catch object from spring form jsp. for example, I design form on jsp page, that form exist with commandName

and I catch the object on controller with follow code

public String controllerPost(@ModelAttribute("Book") Book book)

and every field name of book must be match with path in sub-element of form