@WebServlet(urlPatterns = "/day")

protected String resQ = null;

GregorianCalendar calendar = new GregorianCalendar();
int dayID = calendar.get(Calendar.DAY_OF_MONTH); //

private static final String URL = "jdbc:mysql://localhost:3306/DataBase";
private static final String USER = "root";
private static final String PASSWORD = "root";

private Connection currentConnect;

public void initDisconnection() throws Exception {
    currentConnect.close();
}

public void initConnection() throws Exception {
    Class.forName("com.mysql.jdbc.Driver");
    currentConnect = DriverManager.getConnection(URL, USER, PASSWORD);
}

public void doGet(HttpServletRequest request, HttpServletResponse response) throws
        ServletException, IOException {
    try {
        initConnection();

    Statement statement = currentConnect.createStatement();
    String query = ("select * from db_predict.db_predict WHERE ID =" + dayID);
    ResultSet resultQuery = statement.executeQuery(query);
    while (resultQuery.next()) {
        resQ = resultQuery.getString("Text");
    }

    initDisconnection();
    } catch (Exception e) {
    e.printStackTrace();
}
    PrintWriter out = response.getWriter();
    out.println("<h1>" + resQ + "</h1>");  //Вывод на экран текста
}