package com.trifulcas.controlador;
import java.io.IOException;
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;
import com.trifulcas.utils.Sucesiones;
/**
* Servlet implementation class Fibonacci
*/
@WebServlet("/fibonacci")
public class Fibonacci extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public Fibonacci() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse
* response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String terminos = request.getParameter("terminos");
int term=0;
if (terminos != null && terminos.chars().allMatch(Character::isDigit)) {
term=Integer.parseInt(terminos);
} else {
term = 20;
}
request.setAttribute("sucesion", Sucesiones.fibonacci(term));
request.setAttribute("terminos", term);
RequestDispatcher dispatcher = request.getRequestDispatcher("fibonacci.jsp");
dispatcher.forward(request, response);
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse
* response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
}
}
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="ISO-8859-1">
<title>Fibonacci</title>
</head>
<body>
<h1>Sucesión de fibonacci</h1>
<p>
Aquí vas a ver los
<%=request.getAttribute("terminos")%>
primeros términos de la sucesión de fibonacci
</p>
<h2><%=request.getAttribute("sucesion")%></h2>
<form action="./fibonacci">
<p>¿Cuantos términos quieres?</p>
<input type="text" name="terminos"> <input type="submit">
</form>
</body>
</html>
