Question

I want to get attribute on my active directory with Java (Eclipse).

I found this code :

Hashtable<String, Object> env = new Hashtable<String, Object>();
env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
env.put(Context.PROVIDER_URL, "ldap://localhost:389/o=JNDITutorial");

// Authenticate as S. User and password "mysecret"
env.put(Context.SECURITY_AUTHENTICATION, "simple");
env.put(Context.SECURITY_PRINCIPAL, 
        "cn=S. User, ou=NewHires, o=JNDITutorial");
env.put(Context.SECURITY_CREDENTIALS, "mysecret");

// Create the initial context
DirContext ctx = new InitialDirContext(env);

but I have start with this to know if there is a connection:

String ldapUrl = "ldap://"+serverAddress+":389";
//Prepare the environment with the username and password.
Hashtable env = new Hashtable();
DirContext ctx = null;
env.put(Context.SECURITY_PRINCIPAL, DOMAIN+username);
//env.put(Context.SECURITY_PRINCIPAL, username);
env.put(Context.SECURITY_CREDENTIALS, password);

ctx = LdapCtxFactory.getLdapCtxInstance(ldapUrl, env); // To test the connection

So how can I create an InitialDirContext ?
What should I put in env.put(Context.INITIAL_CONTEXT_FACTORY, "?????????") for that works ?

Thanks a lot.

Answer 1

In the example you found, the connection is established when you do:

// Create the initial context
DirContext ctx = new InitialDirContext(env);

For this to work, you need to have all the required environment properties set, like

SECURITY_CREDENTIALS
SECURITY_PRINCIPAL
SECURITY_AUTHENTICATION
PROVIDER_URL
INITIAL_CONTEXT_FACTORY
(possibly others depending on if you have encryption set in your Active Directory)

The context factory is what Java is going to use to create that connection. If you don’t specify it, java will use the default which is com.sun.jndi.ldap.LdapCtxFactory, if I’m not mistaken.