ListaLivros.java

package br.biblioteca;

import java.io.IOException;
import java.util.List;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@WebServlet(urlPatterns={"/ListaLivros"})
public class ListaLivros extends HttpServlet {
	private static final long serialVersionUID = 1L;
	
	protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
				
		RequestDispatcher rd = req.getRequestDispatcher("/listarLivros.jsp");
		req.getAttribute("lista");
		rd.forward(req, resp);
	}
	
	protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
		
    		//ACRESCENTADO
		Banco banco = new Banco();
		
		List<Livro> lista = banco.getLivros();
		req.setAttribute("lista", lista);
    		//ACRESCENTADO
		
		RequestDispatcher rd = req.getRequestDispatcher("/listarLivros.jsp");
		rd.forward(req, resp);
	}

}