如何在JAVA中获取我的ldapsearch中的所有dn

import javax.naming.*;
import javax.naming.directory.*;
import java.util.*;

Hashtable<String, String> env = new Hashtable<>();
env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
env.put(Context.PROVIDER_URL, "ldap://your_ldap_server:port");
env.put(Context.SECURITY_AUTHENTICATION, "simple");
env.put(Context.SECURITY_PRINCIPAL, "your_username");
env.put(Context.SECURITY_CREDENTIALS, "your_password");

DirContext ctx = new InitialDirContext(env);

SearchControls searchControls = new SearchControls();
searchControls.setSearchScope(SearchControls.SUBTREE_SCOPE);
String searchFilter = "(objectClass=*)";

NamingEnumeration<SearchResult> results = ctx.search("your_base_dn", searchFilter, searchControls);

while (results.hasMore()) {
    SearchResult searchResult = results.next();
    String dn = searchResult.getNameInNamespace();
    System.out.println("DN: " + dn);
}

ctx.close();