X
Xarky
Hi,
I have the following three servlets
import javax.servlet.http.*;
import javax.servlet.*;
import java.io.*;
public class Front extends HttpServlet
{
public void init(ServletConfig c)
{
(c.getServletContext()).log("Session Information Part - Front");
} // end method init
public void doGet(HttpServletRequest request, HttpServletResponse
response)
throws IOException, ServletException
{
PrintWriter out;
HttpSession session;
session = request.getSession(true);
response.setContentType("text/html");
out = response.getWriter();
out.println("<html>");
out.println("<head>");
out.println("<title>" + "Enter Personal Data" +"</title>");
out.println ("</head>");
out.println ("<body bgcolor=\"white\">");
out.println ("<p>Enter data here:</p>");
out.println ("<form action=\"NameAndSurnameServlet\"
method=\"post\">");
out.println ("<p>Name : <input type=\"text\" size=20
name=\"personName\"> </p><br>");
out.println ("<p>Surname : <input type=\"text\" size=20
name=\"personSurname\"></p><br>");
out.println ("<input type=submit>");
out.println ("</form>");
out.println ("</body>");
out.println ("</html>");
} // end method doGet
} // end class Front
/***********************************************/
import javax.servlet.http.*;
import javax.servlet.*;
import java.io.*;
public class NameAndSurnameServlet extends HttpServlet
{
public void init(ServletConfig c)
{
(c.getServletContext()).log("Session Information Part - Name and
Surname servlet");
} // end method init
public void doPost(HttpServletRequest request, HttpServletResponse
response)
throws IOException, ServletException
{
PrintWriter out;
String name, surname;
HttpSession session;
session = request.getSession();
name = request.getParameter("personName");
surname = request.getParameter("personSurname");
//session.setAttribute("presonName", name);
//session.setAttribute("presonSurname", surname);
session.putValue("personName", name);
session.putValue("personSurname", surname);
response.setContentType("text/html");
out = response.getWriter();
out.println("<html>");
out.println("<head>");
out.println("<title>" + "Processing Personal Data" +"</title>");
out.println ("</head>");
out.println ("<body bgcolor=\"white\">");
out.println ("<p>Processing</p>");
out.println ("<form action=\"DisplayAllServlet\"
method=\"post\">");
out.println ("<p>Age : <input type=\"text\" size=20
name=\"personAge\"> </p><br>");
out.println ("<input type=submit>");
out.println ("</form>");
out.println ("</body>");
out.println ("</html>");
} // end method doPost
} // end class NameAndSurnameServlet
import javax.servlet.http.*;
import javax.servlet.*;
import java.io.*;
public class DisplayAllServlet extends HttpServlet
{
public void init(ServletConfig c)
{
(c.getServletContext()).log("Session Information Part - Display All
Servlet");
} // end method init
public void doPost(HttpServletRequest request, HttpServletResponse
response)
throws IOException, ServletException
{
PrintWriter out;
String name, surname, age;
HttpSession session;
session = request.getSession();
response.setContentType("text/html");
out = response.getWriter();
out.println("<html>");
out.println("<head>");
out.println("<title>" + "Showing Personal Data" +"</title>");
out.println ("</head>");
out.println ("<body bgcolor=\"white\">");
out.println ("<p></p>");
name = (String)session.getAttribute("personName");
surname = (String)session.getAttribute("personSurname");
age = request.getParameter("personAge");
out.println ("<p>Showing Personal Data</p>");
out.println ("<p>Name = "+name+"</p>");
out.println ("<p>Surname = "+surname+"</p>");
out.println ("<p>Age = "+age+"</p>");
out.println ("</body>");
out.println ("</html>");
} // end method doPost
} // end class DisplayAllServlet
Basically what I have is, in Front form, I am entering name and
surname, then on submit, NameAndSurnameServlet requests for age and
then the DisplayAllServlet displays the name surname and age of
person.
Now I was using sessions. I started the session in the Front Servlet.
In the NameAndSurnameServlet, retrieved the data(getParameters()) and
set them by using putValue(..). In the third servlet, I retrieved all
the data using getParameter(..) and getAttribute(..). As it is works.
Is in this way correct, because I was trying to set the data retrieved
from the second servlet by using setAttribute(..);(without
putValue(..) but then the name and surname being returned in 3rd
servlet were being null.
Now when I added the putValue(..), the following warning was being
given
"Note: C:\Practicals\NameAndSurnameServlet.java uses or overrides a
deprecated API."
Can someone give me some help
I have the following three servlets
import javax.servlet.http.*;
import javax.servlet.*;
import java.io.*;
public class Front extends HttpServlet
{
public void init(ServletConfig c)
{
(c.getServletContext()).log("Session Information Part - Front");
} // end method init
public void doGet(HttpServletRequest request, HttpServletResponse
response)
throws IOException, ServletException
{
PrintWriter out;
HttpSession session;
session = request.getSession(true);
response.setContentType("text/html");
out = response.getWriter();
out.println("<html>");
out.println("<head>");
out.println("<title>" + "Enter Personal Data" +"</title>");
out.println ("</head>");
out.println ("<body bgcolor=\"white\">");
out.println ("<p>Enter data here:</p>");
out.println ("<form action=\"NameAndSurnameServlet\"
method=\"post\">");
out.println ("<p>Name : <input type=\"text\" size=20
name=\"personName\"> </p><br>");
out.println ("<p>Surname : <input type=\"text\" size=20
name=\"personSurname\"></p><br>");
out.println ("<input type=submit>");
out.println ("</form>");
out.println ("</body>");
out.println ("</html>");
} // end method doGet
} // end class Front
/***********************************************/
import javax.servlet.http.*;
import javax.servlet.*;
import java.io.*;
public class NameAndSurnameServlet extends HttpServlet
{
public void init(ServletConfig c)
{
(c.getServletContext()).log("Session Information Part - Name and
Surname servlet");
} // end method init
public void doPost(HttpServletRequest request, HttpServletResponse
response)
throws IOException, ServletException
{
PrintWriter out;
String name, surname;
HttpSession session;
session = request.getSession();
name = request.getParameter("personName");
surname = request.getParameter("personSurname");
//session.setAttribute("presonName", name);
//session.setAttribute("presonSurname", surname);
session.putValue("personName", name);
session.putValue("personSurname", surname);
response.setContentType("text/html");
out = response.getWriter();
out.println("<html>");
out.println("<head>");
out.println("<title>" + "Processing Personal Data" +"</title>");
out.println ("</head>");
out.println ("<body bgcolor=\"white\">");
out.println ("<p>Processing</p>");
out.println ("<form action=\"DisplayAllServlet\"
method=\"post\">");
out.println ("<p>Age : <input type=\"text\" size=20
name=\"personAge\"> </p><br>");
out.println ("<input type=submit>");
out.println ("</form>");
out.println ("</body>");
out.println ("</html>");
} // end method doPost
} // end class NameAndSurnameServlet
import javax.servlet.http.*;
import javax.servlet.*;
import java.io.*;
public class DisplayAllServlet extends HttpServlet
{
public void init(ServletConfig c)
{
(c.getServletContext()).log("Session Information Part - Display All
Servlet");
} // end method init
public void doPost(HttpServletRequest request, HttpServletResponse
response)
throws IOException, ServletException
{
PrintWriter out;
String name, surname, age;
HttpSession session;
session = request.getSession();
response.setContentType("text/html");
out = response.getWriter();
out.println("<html>");
out.println("<head>");
out.println("<title>" + "Showing Personal Data" +"</title>");
out.println ("</head>");
out.println ("<body bgcolor=\"white\">");
out.println ("<p></p>");
name = (String)session.getAttribute("personName");
surname = (String)session.getAttribute("personSurname");
age = request.getParameter("personAge");
out.println ("<p>Showing Personal Data</p>");
out.println ("<p>Name = "+name+"</p>");
out.println ("<p>Surname = "+surname+"</p>");
out.println ("<p>Age = "+age+"</p>");
out.println ("</body>");
out.println ("</html>");
} // end method doPost
} // end class DisplayAllServlet
Basically what I have is, in Front form, I am entering name and
surname, then on submit, NameAndSurnameServlet requests for age and
then the DisplayAllServlet displays the name surname and age of
person.
Now I was using sessions. I started the session in the Front Servlet.
In the NameAndSurnameServlet, retrieved the data(getParameters()) and
set them by using putValue(..). In the third servlet, I retrieved all
the data using getParameter(..) and getAttribute(..). As it is works.
Is in this way correct, because I was trying to set the data retrieved
from the second servlet by using setAttribute(..);(without
putValue(..) but then the name and surname being returned in 3rd
servlet were being null.
Now when I added the putValue(..), the following warning was being
given
"Note: C:\Practicals\NameAndSurnameServlet.java uses or overrides a
deprecated API."
Can someone give me some help