index.html (dentro do pacote webinf)

<!DOCTYPE html>

<html>
<head>
<title>TODO supply a title</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
</head>
<body>
<div><h1>Aluno</h1></div>
<form name="java" method="post" action="Controlar">
<h2>ID <input type="text" name="id"><br>
RA <input type="text" name="ra"><br>
Nome <input type="text" name="nome"><br>
Curso <input type="text" name="curso"><br>
Disciplina <input type="text" name="disciplina"><br>
Semestre <input type="text" name="semestre"></h2>
<input type="submit" name="btnenviar" value="Concluir">

</form>

</body>
</html>

Aluno.java (dentro do pacote bean)

package bean;

import java.io.Serializable;

/**
*
* @author internet
*/
public class Aluno implements Serializable{
private int ID;
private String ra;
private String nome;
private String curso;
private String disciplina;
private String semestre;

public int getID() {
return ID;
}

public void setID(int ID) {
this.ID = ID;
}

public String getRa() {
return ra;
}

public void setRa(String ra) {
this.ra = ra;
}

public String getNome() {
return nome;
}

public void setNome(String nome) {
this.nome = nome;
}

public String getCurso() {
return curso;
}

public void setCurso(String curso) {
this.curso = curso;
}

public String getDisciplina() {
return disciplina;
}

public void setDisciplina(String disciplina) {
this.disciplina = disciplina;
}

public String getSemestre() {
return semestre;
}

public void setSemestre(String semestre) {
this.semestre = semestre;
}

}
Controlar.java (dentro do pacote controler)

package controler;

import bean.Aluno;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
*
* @author internet
*/
public class Controlar extends HttpServlet {

/**
* Processes requests for both HTTP <code>GET</code> and <code>POST</code>
* methods.
*
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
try (PrintWriter out = response.getWriter()) {

//out.print("Entrou");

int id = Integer.parseInt(request.getParameter("id"));
String ra = request.getParameter("ra");
String nome = request.getParameter("nome");
String curso = request.getParameter("curso");
String disc = request.getParameter("disciplina");
String semestre = request.getParameter("semestre");
//atribuir os valores ao objeto aluno.//

Aluno a = new Aluno();
a.setID(id);
a.setRa(ra);
a.setNome(nome);
a.setCurso(curso);
a.setDisciplina(disc);
a.setSemestre(semestre);
request.setAttribute("aluno", a);

//enviar para a view//
request.getRequestDispatcher("saida.jsp").forward(request, response);
}
}

// <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
/**
* Handles the HTTP <code>GET</code> method.
*
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}

/**
* Handles the HTTP <code>POST</code> method.
*
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}

/**
* Returns a short description of the servlet.
*
* @return a String containing servlet description
*/
@Override
public String getServletInfo() {
return "Short description";
}// </editor-fold>

}
saida.jsp (dentro do pacote webinf)

<%@page import="bean.Aluno"%>
<%
Aluno a = (Aluno) request.getAttribute("aluno");
out.print(a.getID() + "<br>");
out.print(a.getRa() + "<br>");
out.print(a.getNome() + "<br>");
out.print(a.getCurso() + "<br>");
out.print(a.getDisciplina() + "<br>");
out.print(a.getSemestre() + "<br>");

%>

	Created by Gabriel Rocha almost 7 years ago

JSP Note on Servlet com jsp e classes java, created by Gabriel Rocha on 14/09/2017.

Servlet com jsp e classes java