Reading Active Directory

Example of reading users e-mail address from AD:

public static void main(String[] args)
{
Hashtable env = new Hashtable(11);
env.put(Context.SECURITY_PRINCIPAL, "userName (CN)");
env.put(Context.SECURITY_CREDENTIALS, "pass");
env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
env.put(Context.PROVIDER_URL, "ldap://serverName:389/DC=domain1,DC=hr");

String users = "ou=Unit,ou=Organizational";
try
{
DirContext ctx = new InitialDirContext(env);

Attributes answer = null;
String[] attrIDs = { "mail" };//Specify the ids of the attributes to return
NamingEnumeration list = ctx.list(users);
while (list.hasMore())
{
NameClassPair nc = (NameClassPair) list.next();
System.out.println(nc.getName());
answer = ctx.getAttributes(nc.getName() + " , " + users, attrIDs);
for (NamingEnumeration ae = answer.getAll(); ae.hasMore();)
{
Attribute attr = (Attribute) ae.next();
System.out.println("attribute: " + attr.getID());
/* Print each value */
for (NamingEnumeration e = attr.getAll(); e.hasMore(); System.out.println(e.next()))
;
}
}
}
catch (NamingException e)
{
System.err.println(e);
}
}



Resources:
http://www.windowsnetworking.com/kbase/WindowsTips/Windows2000/AdminTips/ActiveDirectory/ActiveDirectoryNamingStandard.html
http://docs.oracle.com/javase/tutorial/jndi/ops/getattrs.html