write a string to variable

[kmali]

Hi,
I'm a seam and java newbe and have a simple question.

Ho can a write a string given in a (xhtml-)input box into a variable defined in the java code?

I've made a class login:

public class login {
        
        public static String username;
        public static String loginname = "test1";

        
        
        public boolean check()
        {
        
        if (login.username == login.loginname);
        
        return true;
                
        }
}

This the xhtml code:

div class="dialog">
            <div class="prop">
                <span class="name">Username</span>
                <span class="value">
                    <h:inputText id="username" value="#{login.username}"/>
                </span>
            </div>

It doesn't work, I get the following error message:
value could not be converted to the expected type

What am I doing worng?

thank you

[lvdberg]

Hi Kmali,

If you're a Seam AND a Java newbie I think you're probably overeating a bit.

Try with some simple java classes and html-pages first and see how that works.

To give you some hints: Your class lacks getters and setters for the two attrbutes and they're defined as static, which makes it very complex to use in a multi-user environment (web).

[kmali]

I just need a login funktion for a application I haven't written myself.
I tried the to implemnt it via the autheticator class, but it didn't work. (Obviously because of my seam knowledge)

So I want to try to implement a simple way to authenticate a user.
I doesn't need to be very secure, because it will only run in a local Network.

I have a User class from a example Application with getters and setters:

import static org.jboss.seam.ScopeType.SESSION;

import java.io.Serializable;

import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.Table;

import org.hibernate.validator.Length;
import org.hibernate.validator.NotNull;
import org.hibernate.validator.Pattern;
import org.jboss.seam.annotations.Name;
import org.jboss.seam.annotations.Scope;

@Entity
@Name("user")
@Scope(SESSION)
@Table(name="Customer")
public class User implements Serializable
{
     private String username;
     private String password;
     
   
   public User( String username, String password)
   {
        
        this.username = username;
        this.password = password;
   }
   
   public User() {}
   
   @NotNull
   @Length(min=5, max=15)
   public String getPassword()
   {
      return password;
   }
   public void setPassword(String password)
   {
      this.password = password;
   }
   
   @Id
   @Length(min=5, max=15)
   @Pattern(regex="^\\w*$", message="not a valid username")
   public String getUsername()
   {
      return username;
   }
   public void setUsername(String username)
   {
      this.username = username;
   }
   
   @Override
   public String toString() 
   {
      return "User(" + username + ")";
   }
}

I just want to check a hardcoded Username and Password and redirect the user to the home.xhtml
I would appriciate if somebody could explain to me how to realize this... :(

[asookazian]

look at the booking example in the distro:

@Stateless
@Name("authenticator")
public class AuthenticatorAction 
    implements Authenticator
{
    @PersistenceContext 
    private EntityManager em;

    @In(required=false)   
    @Out(required=false, scope = SESSION)
    private User user;
   
    public boolean authenticate()
    {
     List results = em.createQuery("select u from User u where u.username=#{identity.username} and u.password=#{identity.password}")
                         .getResultList();
      
     if (results.size()==0) {
         return false;
     } else {
         user = (User) results.get(0);
         return true;
     }
    }
    
}