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- package pacote;
- import java.io.IOException;
- import java.io.PrintWriter;
- import javax.servlet.RequestDispatcher;
- import javax.servlet.ServletConfig;
- 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("/www")
- public class AdicionaContatoServlet extends HttpServlet {
- public void init(ServletConfig config) throws ServletException{
- super.init(config);
- log("INICIANDO SERVLET");
- }
- public void destroy() {
- super.destroy();
- log("DESTRUINDO SERVLET");
- }
- protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
- PrintWriter out = response.getWriter();
- String nome = request.getParameter("nome");
- String email = request.getParameter("email");
- String endereco = request.getParameter("endereco");
- ContatoDao dao = new ContatoDao();
- Contato contato = new Contato();
- contato.setNome(nome);
- contato.setEmail(email);
- contato.setEndereco(endereco);
- dao.addContato(contato);
- //RequestDispatcher rd = request.getRequestDispatcher("/PrimeiroJsp.jsp");
- //rd.forward(request, response);
- }
- }
- package pacote;
- import java.sql.Connection;
- import java.sql.DriverManager;
- import java.sql.SQLException;
- public class ConnectionFactory {
- static String url = "jdbc:oracle:thin:@localhost:1521:XE";
- static String user = "system";
- static String password = "1234";
- public Connection getConnection() {
- try {
- return DriverManager.getConnection(url, user, password);
- }
- catch(SQLException e) {
- throw new RuntimeException(e);
- }
- }
- public void closeConnection(Connection connection) {
- try {
- connection.close();
- }
- catch(SQLException e) {
- throw new RuntimeException(e);
- }
- }
- }
- package pacote;
- import pacote.Contato;
- import pacote.ConnectionFactory;
- import java.sql.Connection;
- import java.sql.PreparedStatement;
- import java.sql.ResultSet;
- import java.sql.SQLException;
- import java.util.ArrayList;
- import java.util.List;
- public class ContatoDao {
- Connection connection = null;
- ConnectionFactory cf = new ConnectionFactory();
- public void addContato(Contato contato) {
- connection = cf.getConnection();
- String sql = "INSERT INTO CONTATO VALUES (?,?,?)";
- try {
- PreparedStatement stmt = connection.prepareStatement(sql);
- stmt.setString(1, contato.getNome());
- stmt.setString(2, contato.getEmail());
- stmt.setString(3, contato.getEndereco());
- stmt.execute();
- stmt.close();
- }
- catch(SQLException e) {
- throw new RuntimeException(e);
- }
- finally {
- cf.closeConnection(connection);
- }
- }
- public void delContato(Contato contato) {
- try {
- connection = new ConnectionFactory().getConnection();
- String sql = "DELETE FROM CONTATO WHERE NOME = ?";
- PreparedStatement stmt = connection.prepareStatement(sql);
- stmt.setString(1, contato.getNome());
- }
- catch(SQLException e) {
- throw new RuntimeException(e);
- }
- finally {
- cf.closeConnection(connection);
- }
- }
- public void attContato(Contato contato) {
- try {
- connection = new ConnectionFactory().getConnection();
- String sql = "UPDATE CONTATO SET NOME = ?, EMAIL = ?, ENDERECO = ? WHERE NOME = ?";
- PreparedStatement stmt = connection.prepareStatement(sql);
- stmt.setString(1, contato.getNome());
- stmt.setString(2, contato.getEmail());
- stmt.setString(3, contato.getEndereco());
- stmt.setString(4, contato.getNome());
- }
- catch(SQLException e) {
- throw new RuntimeException(e);
- }
- finally {
- cf.closeConnection(connection);
- }
- }
- public List<Contato> getLista() {
- List<Contato> contatos = new ArrayList<>();
- try {
- connection = new ConnectionFactory().getConnection();
- String sql = "SELECT * FROM CONTATO WHERE NOME = ?";
- PreparedStatement stmt = connection.prepareStatement(sql);
- ResultSet rs = stmt.executeQuery();
- Contato contato = new Contato();
- while(rs.next()) {
- contato.setNome(rs.getString("nome"));
- contato.setEndereco(rs.getString("endereco"));
- contato.setEmail(rs.getString("email"));
- stmt.execute();
- contatos.add(contato);
- }
- stmt.close();
- rs.close();
- }
- catch(SQLException e) {
- throw new RuntimeException(e);
- }
- finally {
- cf.closeConnection(connection);
- return contatos;
- }
- }
- }
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