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| package gpi.servlet;
import gpi.session.login.*;
import javax.naming.*;
import javax.rmi.PortableRemoteObject;
import java.util.*;
import java.io.*;
import javax.ejb.EJBException;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import javax.servlet.*;
/**
* @author arnaud
*
* TODO To change the template for this generated type comment go to
* Window - Preferences - Java - Code Style - Code Templates
*/
public class LoginGPI extends HttpServlet {
private myLoginHome myloginHome = null;
private myLogin mylogin = null;
private static String LOGIN_SCREEN="/login";
private static String LOGIN_ERROR_SCREEN="/loginerror";
private static String SUCCESS_SCREEN="/loginsuccess";
public void init(ServletConfig config) throws ServletException {
super.init(config);
initLogin();
//TODO Method stub generated by Lomboz
}
private void initLogin(){
System.out.println("Access to login");
try{
myloginHome = getHome();
}
catch(Exception e){
System.out.println("Access failed");
}
}
private myLoginHome getHome() throws NamingException{
Object result=getContext().lookup(myLoginHome.JNDI_NAME);
return ((myLoginHome)PortableRemoteObject.narrow(result,myLoginHome.class));
}
private InitialContext getContext()throws NamingException{
Hashtable props = new Hashtable();
props.put(InitialContext.INITIAL_CONTEXT_FACTORY,"org.jnp.interfaces.NamingContextFactory");
props.put(InitialContext.PROVIDER_URL,"jnp://127.0.0.1:1099");
InitialContext initialContext = new InitialContext(props);
return initialContext;
}
public void destroy() {
super.destroy();
//TODO Method stub generated by Lomboz
}
protected void doGet(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
System.out.println(" YO Checking login");
//TODO Method stub generated by Lomboz
processRequest(request,response);
}
protected void doPost(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
//System.out.println("Checking login");
System.out.println("YO");
//TODO Method stub generated by Lomboz
processRequest(request,response);
}
protected void processRequest(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
System.out.println("YO enter with error2");
HttpSession session = request.getSession(true);
String useraction = request.getParameter("useraction");
String buildurl=null;
String temp = null;
int test =0;
if (useraction==null){
buildurl = LOGIN_SCREEN;
System.out.println("no action user ");
}
else
{
if (useraction.equals("dovalidation"))
{
String username = request.getParameter("username");
temp = username;
String password = request.getParameter("password");
if ((username==null)||(!loginuser(username,password,session)))
{
buildurl = LOGIN_ERROR_SCREEN;
System.out.println(" bad password");
}
else
{
buildurl = SUCCESS_SCREEN;
System.out.println(" success screen ");
}
}
}
if (buildurl == LOGIN_SCREEN)
{
if (test!=1)
{
displayloginscreen(response);
test = 1;
}
else
{
displaysuccessscreen(response,temp);
}
System.out.println(" login");
}
else if (buildurl == SUCCESS_SCREEN)
{
displaysuccessscreen(response,temp);
System.out.println("sucess");
}
else if (buildurl == LOGIN_ERROR_SCREEN)
{
displayerrorscreen(response);
System.out.println("error");
}
System.out.println(" merde");
}
private void displayloginscreen(HttpServletResponse response) throws IOException
{
System.out.println("Entering AccessController.displayloginscreen()");
response.setContentType("text/htlm");
PrintWriter out = response.getWriter();
out.println("<html><title>MyLogin Login</title>");
out.println("<body><h2>Welcome to Mylogin</h2></body>");
out.println("<form method=\"GET\">");
displayLoginDataFields(out);
out.println("</form></html>");
if (out != null)out.close();
System.out.println("Leaving AccessController.displayLoginScreen()");
}
private void displayerrorscreen(HttpServletResponse response) throws IOException
{
System.out.println("Entering AccessController.displayloginscreen()");
response.setContentType("text/htlm");
PrintWriter out = response.getWriter();
out.println("<html><title>MyLogin ERROR</title>");
out.println("<body><h2>Welcome to MyERROR</h2></body>");
if (out != null)out.close();
System.out.println("Leaving AccessController.displayLoginScreen()");
}
private void displayLoginDataFields(PrintWriter out)
{
out.println("<h3>Please enter your username and password:.");
out.println("<table><tr>Username: <td><input name=\"username\" type=\"text\">");
out.println("<tr><td>Password: <td><input name=\"password\" type=\"password\">");
out.println("</table>");
out.println("<input type=\"submit\" value=\"login\" name=\"loginbutton\">");
out.println("<input type=\"reset\" name=\"resetButton\" value=\"reset\">");
out.println("<input type=\"hidden\" name=\"useraction\" value=\"dovalidation\">");
}
private void displaysuccessscreen(HttpServletResponse response,String username)
{
try{
System.out.println("Entering AccessController.displaysucessscreen()");
response.setContentType("text/htlm");
PrintWriter out = response.getWriter();
out.println("<html><title>MyLogin Login</title>");
out.println("<body><h2>Bravo");
out.println(username);
out.println("</h2></body>");
out.println("<form method=\"get\">");
out.println("</form></html>");
if (out != null)out.close();
System.out.println("Leaving AccessController.displaysucessScreen()");
}catch (Exception e)
{
System.out.println("servlet failed");
}
}
private boolean loginuser(String username,String password,HttpSession session){
String userid = null;
try{
myLogin mylogin = myloginHome.create();
userid = mylogin.checklogin(username,password);
session.setAttribute("userID",userid);
}catch(Exception e)
{
System.out.println("Exception in loginuser()");
}
if (userid !=null)
{
return (true);
}
else
{
return (false);
}
}
} |
[débutant][servlet]Problème avec Servlet login
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