@RequestMapping(method = RequestMethod.POST)
public String submitForm(@ModelAttribute BookSearch search, Model m) {
List<Book> books = null;
if (StringUtils.isNotBlank(search.getTitle())) {
books = bookService.getBooksByTitle(search.getTitle());
} else if (StringUtils.isNotBlank(search.getAuthor())) {
books = bookService.getBooksByAuthorSurname(search.getAuthor());
} else if (StringUtils.isNotBlank(search.getIsbn())) {
books = bookService.getBooksByISBN(search.getIsbn());
}
m.addAttribute("books", books);
return "viewBooks";
}
