How to get users info belongs to AD server group.

Hi

I need to get list of users(basically list of email addresses of users) who are members of AD group
Please help with sample Java program to list all the user info below to group

My AD sever has a group with name "MyGroup" and has two members "user1" and "user2" can I able to read the email ids of the user1 and user2 by querying AD sever with group name MyGroup

Thanks in advance

Satish

Anybody has an idea about this.
Please help

AD has an LDAP interface to it, so that is probably the easiest way to do it. If you haven't used LDAP through Java before, this is probably a good place to start.

The alternative is to write the code that accesses AD in C/C++ and then write a JNI wrapper around that code. This is definitely the less easy option but will give you greater flexibility when accessing AD.

As Stuart said, you will have to use LDAP searchfilters.

Here is a snippet that requires a previous bind to the AD server, searches and returns attributes.

// This is the actual Authentication piece. Will throw javax.naming.AuthenticationException
	    	// if the users password is not correct. Other exceptions may include IO (server not found) etc.
	    	ctxGC = new InitialLdapContext(env, null);
	    	
	    	// Now try a simple search and get some attributes as defined in returnedAtts
	    	NamingEnumeration<SearchResult> answer = ctxGC.search(searchBase, searchFilter, searchCtls);
	    	while (answer.hasMoreElements()) {
	    		SearchResult sr = (SearchResult) answer.next();
	    		Attributes attrs = sr.getAttributes();
	    		Map<String, Object> amap = null;
	    		if (attrs != null) {
	    			amap = new HashMap<String,Object>();
	    			NamingEnumeration<?> ne = attrs.getAll();
	    			while (ne.hasMore()) {
	    				Attribute attr = (Attribute) ne.next();
	    				if (attr.size() == 1) {
	    					amap.put(attr.getID(), attr.get());
	    				} else {
	    					HashSet<String> s = new HashSet<String>();
	    					NamingEnumeration n =  attr.getAll();
	    					while (n.hasMoreElements()) {
	    						s.add((String)n.nextElement());
	    					}
	    					amap.put(attr.getID(), s);
	    				}
	    			}
	    			ne.close();
	    		}
	    		ctxGC.close();	// Close and clean up
	    		return amap;
	    	}
	    } catch (NamingException nex) {
	    	nex.printStackTrace();
	    } catch (Exception ex) {
	    	ex.printStackTrace();
	    }

WP