Hi guys? I have been programming in Java using J2SE. currently am working on J2EE enterprise application development using JavaServer Faces Technology.Since am new to JavaServer Faces have decided to start by a simple login applications.Developing the interface is not a big problem but getting the parameters from the inputText and sending to my backing bean is my problem. When i try to login,the Server replies with an error javax.el.PropertyNotwritableException which i dont know how to handle.Please can someone explain to me whats wrong with my code.Below is my code for login.xhtml
<?xml version='1.0' encoding='UTF-8' ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
>
<h:head>
<title>Welcome</title>
</h:head>
<body bgColor="blue">
<center> <p>Welcome our Customer(s).Please provide your username and password</p>
<p> <h:graphicImage value="#{resource['log.png']}"/></p>
<p><h:form>
<p><h:outputLabel for="user">
<h:outputText id="username" value="Username"/>
</h:outputLabel>
<h:inputText id="user" value="#{loginBean.setUserName('')}" required="true">
</h:inputText></p><br/>
<p><h:outputLabel for="pass">
<h:outputText id="password" value="Password"/>
</h:outputLabel>
<h:inputSecret id="pass" value="#{loginBean.setPassword('')}" required="true">
</h:inputSecret><br/></p>
<p> <h:commandButton id="submit" value="Login" action="success.xhtml"/></p>
</h:form>
</p>
</center>also code for Backing bean is as shown below.
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package customers;
/**
*
* @author BoniLabs
*/
import java.sql.*;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.SessionScoped;
@ManagedBean
@SessionScoped
public class LoginBean
{
//declarations
Statement stm=null;
ResultSet rset=null;
PreparedStatement pstat=null;
Connection con=null;
String username=null;
String password=null;
boolean loop=false;
public LoginBean()
{
}
//connect and validate user
public boolean validateUser()
{
try
{
String user;
String pass;
user=getUserName();
pass=getPassword();
Connections database=new Connections();
con=database.getConection();
do
{
loop=false;
pstat=con.prepareStatement("SELECT * FROM users WHERE username=? AND password=?");
pstat.setString(1, user);
pstat.setString(2,pass);
//
rset=pstat.executeQuery();
if(!rset.next()&&rset.getRow()==0)
{
reload();
}
else
{
success();
}
}while(loop);
}
catch(Exception ex)
{
ex.printStackTrace();
}
return false;
}
//method to set and get details
public void setUserName(String user)
{
username=user;
}
public String getUserName()
{
return username;
}
public void setPassword(String pass)
{
password=pass;
}
public String getPassword()
{
return password;
}
public String reload()
{
return "Login Failed.Try again";
}
public String success()
{
return "Logged.welcome you have been authorised";
}
}
Thankyou.