[débutant][servlet]Problème avec Servlet login
salut
Je suis le tutorial suivant pour développer une appli J2EE: http://www.tusc.com.au/tutorial/html/
Pour développer mon client web, j'ai une servlet.
Elle est faite d'une méthode "processRequest(request,response)" qui est utilisée pour rediriger les méthode doGet et doPost.
Ensuite j'ai quatre autres méthodes qui écrivent la page html:
displaysuccessscreen(HttpServletResponse response,String username)
displayLoginDataFields(PrintWriter out)
displayerrorscreen(HttpServletResponse response)
displayloginscreen(HttpServletResponse response)
Mon problème est le suivant. Lorsque je valide mon formulaire, je ne tombe pas sur la page qui m'indique que mon formulaire est bon mais de nouveau sur mon formulaire. Visiblement lorsque je valide mon formulaire, je n'atteind pas les méthodes doGet et doPost puisque les System.out.println ne s'affichent pas dans ma console...
Pourriez vous jeter un coup d'oeil sur ma servlet pour voir si il manque rien...alors que c'est la même que le tuto...
Merci
Code:
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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);
}
}
} |
