env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
        env.put(Context.SECURITY_AUTHENTICATION, "simple");
        env.put("java.naming.security.principal", (new StringBuilder()).append("isdgfh").append("@iat.iat").toString());
        env.put("java.naming.security.credentials", "ergdfgdfgdf");
        env.put("java.naming.provider.url", (new StringBuilder()).append("ldap://").append("iat.iat").append(":636/DC=iat,DC=iat").toString());

        env.put(Context.PROVIDER_URL, ldapURL);

        try {
            LdapContext ctx = new InitialLdapContext(env, null);
            SearchControls searchCtls = new SearchControls();
            searchCtls.setSearchScope(SearchControls.SUBTREE_SCOPE);

            // Фильтр для поиска группы по никнейму
            String searchFilter = "(sAMAccountName=" + username + ")";

            // Где Искать
            String searchBase = "DC=iat,DC=iat";

            //Член
            String returnedAtts[] = {"member"}; 
            //String returnedAtts[] = null;
            searchCtls.setReturningAttributes(returnedAtts);
            System.out.println(username);
            NamingEnumeration answer = ctx.search(searchBase, searchFilter, searchCtls);
            //Выборка из AD по логину
            while (answer.hasMoreElements()) {
                sr = (SearchResult) answer.next();
                sr2 = sr.toString();

            }
            ctx.close();
        } catch (NamingException e) {
            System.err.println("Problem searching directory: " + e);
        }
        return sr2;