Web/servlettest.java at master · Thome/Web · GitHub

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/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package web;

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 *
 * @author user
 */
@WebServlet(name = "NewServlet", urlPatterns = {"/NewServlet"})
public class NewServlet extends HttpServlet {
    static final String JDBC_DRIVER = "com.mysql.jdbc.Driver";
    static final String DATABASE_URL = "jdbc:postgresql://localhost:5432/postgres";
    static final String usuario = "postgres";
    static final String senha = "thome";

    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        Connection conn;
        out.println("<html>");
        out.println("<head>");
        out.println("<title>Servlet ServletMySql33</title>");
        out.println("<style type=\"text/css\">" +
            "<!-- " +
            "body {background-color:beige; color:black; font-size:90%}"+
            "td   {font-size: 90%; background-color:white; color: black}" +
            "//--></style>");
        out.println("</head>");
        out.println("<body>");
        out.println("<h1>Conectando ao Postgres</h1><br/>");
        try {
            Class.forName("org.postgresql.Driver");
            conn = DriverManager.getConnection(DATABASE_URL, usuario, senha);
            out.println("<h2>Conexão realizada com sucesso.</h2>");
            conn.close();
            out.println("</body>");
            out.println("</html>");

        /*} catch (SQLException s) {
                out.println("SQL Error: " + s.toString() + " "
                    + s.getErrorCode() + " " + s.getSQLState());
        */} catch (Exception e) {
                out.println("Error: " + e.toString()
                    + e.getMessage());
        }
    }

    // <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>

}