regispires/ListaServlet.java

## ListaServlet.java
package br.ufc.dsweb;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.List;

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 javax.servlet.http.HttpSession;

@WebServlet({"/ole", "/ola"})
public class ListaServlet extends HttpServlet {
  private static final long serialVersionUID = 1L;

    @Override
    protected void service(HttpServletRequest req,
    		HttpServletResponse resp)
    		throws ServletException, IOException {

    	String nome = req.getParameter("nome");
    	PrintWriter out = resp.getWriter();
    	out.println("<html><body>");
    	out.println("<p>Hello, " + nome + ". Seu nome tem " +  nome.length() + " caracteres.</p>");

    	Enumeration<String> nomesParams = req.getParameterNames();
    	while (nomesParams.hasMoreElements()) {
    		String nomeParam = nomesParams.nextElement();
    		out.println("<p>" +  nomeParam+"=" + req.getParameter(nomeParam) + "</p>");
    	}

    	HttpSession session = req.getSession();
		out.println("<p>Id sessão: " +  session.getId()+"</p>");

    	List<String> nomes = null;
    	if (nome != null) {
    		nomes = (List<String>) session.getAttribute("nomes");
    		if (nomes == null) {
    			nomes = new ArrayList<String>();
    			session.setAttribute("nomes", nomes);
    		}
    		nomes.add(nome);
    	}
    	for(String n : nomes) {
    		out.println("<p>Nome: " + n + "</p>");

    	}

    	out.println("</body></html>");
    }

}
	package br.ufc.dsweb;

	import java.io.IOException;
	import java.io.PrintWriter;
	import java.util.ArrayList;
	import java.util.Enumeration;
	import java.util.List;

	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 javax.servlet.http.HttpSession;

	@WebServlet({"/ole", "/ola"})
	public class ListaServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;

	@Override
	protected void service(HttpServletRequest req,
	HttpServletResponse resp)
	throws ServletException, IOException {

	String nome = req.getParameter("nome");
	PrintWriter out = resp.getWriter();
	out.println("<html><body>");
	out.println("<p>Hello, " + nome + ". Seu nome tem " + nome.length() + " caracteres.</p>");

	Enumeration<String> nomesParams = req.getParameterNames();
	while (nomesParams.hasMoreElements()) {
	String nomeParam = nomesParams.nextElement();
	out.println("<p>" + nomeParam+"=" + req.getParameter(nomeParam) + "</p>");
	}

	HttpSession session = req.getSession();
	out.println("<p>Id sessão: " + session.getId()+"</p>");

	List<String> nomes = null;
	if (nome != null) {
	nomes = (List<String>) session.getAttribute("nomes");
	if (nomes == null) {
	nomes = new ArrayList<String>();
	session.setAttribute("nomes", nomes);
	}
	nomes.add(nome);
	}
	for(String n : nomes) {
	out.println("<p>Nome: " + n + "</p>");

	}

	out.println("</body></html>");
	}

	}