BookService bookService = new BookServiceImpl();
List<Book> book = bookService.getBooks();
HttpSession session = request.getSession();
session.setAttribute("bookList", book);        

<%
        List<Book> list = (List<Book>) session.getAttribute("bookList");
//        out.println(list);
 %>
 
<div class="container">
    <div class="row">
    
     <%
        for (Book book : list) {
    %>
    
        <div class="col-sm-6 col-md-4">
            <div class="thumbnail">
                <img data-src="holder.js/100%x200" alt="100%x200" style="height: 200px; width: 100%; display: block;"
                     src="<%= book.getImg() %>" data-holder-rendered="true">
                <div class="caption">
                    <h3><%= book.getName() %></h3>
                    <p>Cras justo odio, dapibus ac facilisis in, egestas eget quam. Donec id elit non mi porta gravida at eget
                        metus. Nullam id dolor id nibh ultricies vehicula ut id elit.</p>
                    <p><a href="#" class="btn btn-primary" role="button">Button</a> <a href="#" class="btn btn-default" role="button">Button</a></p>
                </div>
            </div>
        </div>


       <% } %>
       
    </div>
</div>