Ndtyjky

I want to select(search) any kind of data from my LDAP server.
I have a connection but I don't know how to retrieve any data.
Can anyone give a tip so that I can see anything such as data?

Issue:

When I run the following code, I got:

Exception in thread "main" java.lang.ClassCastException: com.sun.jndi.ldap.LdapCtx cannot be cast to javax.activation.DataSource`

What I tried?

DataSource has two imports:

• 1) javax.sql


• 2) javax.activation

I changed different import but didn't work.

My another question is " Are those two imports the same? "

Source code:

public class LDAPJndi {



    //JNDI API를 사용하여 서버와 연결 (Connecting to LDAP server using JNDI)

    public static  DirContext connectJndi() throws NamingException {



        Hashtable<String, String> env = new Hashtable<String, String>(); 

        env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");

        env.put(Context.PROVIDER_URL, "ldap://192.168.0.60:389");

        env.put(Context.SECURITY_AUTHENTICATION, "simple");

        env.put(Context.SECURITY_PRINCIPAL, "cn=govmanager");

        env.put(Context.SECURITY_CREDENTIALS, "GOVmoi!manager");

        DirContext ctx = new InitialDirContext(env); 

        return ctx;

    } 



    public static void lookupJndi() throws NamingException {

        // a method for looking up any data

        DirContext ctx = connectJndi();

        Object o = ctx.lookup("c=kr");

        System.out.println(o);

        //above didn't work, so tried the bottom

        DataSource dataSource = (DataSource) ctx.lookup("c=kr"); //c=kr is BaseDN

        System.out.println(dataSource);

    }

}

I solved the problem like below. I just added many comments to experiment. They might confuse some people, so you may delete them as you wish. And I think the recommended imports by Eclipse work the same in this case. Hope it helped!

public static  DirContext connectJndi() throws NamingException {



    Hashtable<String, String> env = new Hashtable<String, String>(); 

    env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");

    env.put(Context.PROVIDER_URL, "ldap://192.168.0.60:389");

    env.put(Context.SECURITY_AUTHENTICATION, "simple");

    env.put(Context.SECURITY_PRINCIPAL, "your id");

    env.put(Context.SECURITY_CREDENTIALS, "your password");

    //DirContext ctx = new InitialDirContext(env); 

    LdapContext ctx = new InitialLdapContext(env,null);

    return ctx;

} 





public static void lookupJndi() throws NamingException {

    //DirContext ctx = connectJndi();

    LdapContext ctx = (LdapContext) connectJndi();

    SearchControls ctls = new SearchControls();

    ctls.setSearchScope(SearchControls.ONELEVEL_SCOPE);

    //ctls.setReturningAttributes(new String {"cn"});

    //String searchFilter=String.format("(cn=%s)", "cn" );

    String searchFilter="(objectClass=*)";

    //String searchFilter="(o=*)";



    NamingEnumeration<javax.naming.directory.SearchResult> results

     = ctx.search("c=kr", searchFilter,ctls);

    while(results.hasMoreElements()){

        javax.naming.directory.SearchResult sr = results.next();

        Attributes attrs = sr.getAttributes();

        //System.out.println(sr);

        System.out.println(attrs);

    }   

} // method