I am the begginer in EJB 3.0 and I need help.
I don't know what is wrong. I have my stateful EJB "UserSession" that is
container for other stateful EJBs. In loginResolver.jsp page I have my
UserSession EJB lookup code.
1.
First, I used dependency injection by using @ejb annotations to inject the
other EJBs (service objects) that all are statefull too. But I can't get the
EJBs statefull to store their values!
2.
Then I removed @ejb annotations and I called the set methods of the stateful
EJBs in the constructor of my stateful EJB container "UserSession". But
nothing!
I see ( by using the debuger and by using hashcode() method of LoginMachine
object) that every time when I call getLoginMachine() of the UserSession object
I get the stub object that refers to new instance of the statefull
LoginMachine. I don't want that!!!
That is the 2. case. I will show the 1. case too if that is needed.
Thanks!
loginResolver.jsp
<%@ page language="java"
import="com.site.beans.ejb.interfaces.UserSession,
javax.naming.Context,
javax.naming.InitialContext"
contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<%@ taglib uri="http://java.sun.com/jstl/core"; prefix="c" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<meta http-equiv="Content-Type" content="text/html;
charset=ISO-8859-1">
LoginResolver
<%
UserSession userSession=null;
try{
userSession=(UserSession)session.getAttribute("userSession");
Context ctx=null;
if (userSession==null){
ctx=new InitialContext();
userSession=(UserSession)ctx.lookup("LoginJSP/UserSession");
session.setAttribute("userSession",userSession);
}
}
catch(Exception e){
e.printStackTrace();
}
%>
<%
String sUsername=(String)request.getParameter("username");
String sPassword=(String)request.getParameter("password");
if (userSession.getLoginMachine().isUser(sUsername,sPassword)==true){
%>
<c:redirect url="welcome.jsp"></c:redirect>
<%
}
else if (userSession.getLoginMachine().isAllowedNewAttempt()==true){
userSession.setBackLink("login.jsp");
userSession.setErrorMessage("USERNAME OR PASSWORD ARE WRONG.
TRY AGAIN!");
%>
<c:redirect url="errorPage.jsp"></c:redirect>
<%
}
else if (userSession.getLoginMachine().isAllowedNewAttempt()==false){
userSession.setBackLink("");
userSession.setErrorMessage("YOU ARE NOT LOGIN! YOU HAVE NOT
ANY ATTEMPT TO LOGIN! ");
%>
<c:redirect url="errorPage.jsp"></c:redirect>
<%
}
%>
UserSession.java (the 2. case)
package com.site.beans.ejb;
import javax.ejb.Remote;
import javax.ejb.Stateful;
import javax.naming.Context;
import javax.naming.InitialContext;
import org.jboss.annotation.ejb.RemoteBinding;
import com.site.beans.ejb.interfaces.LoginMachine;
import com.site.beans.ejb.interfaces.User;
import com.site.beans.ejb.interfaces.UserSession;
@Remote({UserSession.class})
@RemoteBinding (jndiBinding="LoginJSP/UserSession")
@Stateful
public class UserSessionBean implements UserSession {
Context ctx=null;
private User user;
private LoginMachine loginMachine;
private String errorMessage;
private String backLink;
public UserSessionBean(){
System.out.println("USERSESSION CONSTRUCTOR STARTED");
try{
ctx=new InitialContext();
LoginMachine
loginMachine=(LoginMachine)ctx.lookup("LoginJSP/LoginMachine");
this.setLoginMachine(loginMachine);
User user=(User)ctx.lookup("LoginJSP/User");
this.setUser(user);
}
catch(Exception e){
e.printStackTrace();
}
}
public String getBackLink() {
return backLink;
}
public void setBackLink(String backLink) {
this.backLink = backLink;
}
public String getErrorMessage() {
return errorMessage;
}
public void setErrorMessage(String errorMessage) {
this.errorMessage = errorMessage;
}
public LoginMachine getLoginMachine() {
return loginMachine;
}
public void setLoginMachine(LoginMachine loginMachine) {
this.loginMachine = loginMachine;
}
public User getUser() {
return user;
}
public void setUser(User user) {
this.user = user;
}
}
LoginMachineBean.java
package com.site.beans.ejb;
import javax.ejb.Stateful;
import org.jboss.annotation.ejb.RemoteBinding;
import com.site.beans.ejb.interfaces.LoginMachine;
@Stateful
@RemoteBinding(jndiBinding="LoginJSP/LoginMachine")
public class LoginMachineBean implements LoginMachine {
private static final String USERNAME="admin";
private static final String PASSWORD="admin";
private static final int MAX_ATTEMPT=3;
private int attemptCount=0;
public LoginMachineBean(){
System.out.println("LOGINMACHINEBEAN CONSTRUCTOR STARTED");
}
public boolean isUser(String username,String password){
this.attemptCount++;
if (username.equals(USERNAME)==true &&
password.equals(PASSWORD)==true)
return true;
else
return false;
}
public boolean isAllowedNewAttempt(){
if (this.attemptCount>=MAX_ATTEMPT)
return false;
else
return true;
}
public int getAttemptCount() {
return attemptCount;
}
public void setAttemptCount(int attemptCount) {
this.attemptCount = attemptCount;
}
}
UserBean.java
package com.site.beans.ejb;
import javax.ejb.Stateful;
import org.jboss.annotation.ejb.RemoteBinding;
import com.site.beans.ejb.interfaces.User;
@Stateful
@RemoteBinding(jndiBinding="LoginJSP/User")
public class UserBean implements User {
private String username;
private String password;
public UserBean(){
System.out.println("USERBEAN CONSTRUCTOR STARTED");
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
}
View the original post :
http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3940537#3940537
Reply to the post :
http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3940537
-------------------------------------------------------
Using Tomcat but need to do more? Need to support web services, security?
Get stuff done quickly with pre-integrated technology to make your job easier
Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
_______________________________________________
JBoss-user mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/jboss-user
