java - 从 LDAP 目录上下文对象查找 BASE DN

Question

我有 LDAP 的目录上下文，但我需要从中找出 BASE DN目录上下文对象。我有以下代码来获取目录上下文对象，

// Configure our directory context environment.
Hashtable env = new Hashtable();
env.put(Context.INITIAL_CONTEXT_FACTORY,"com.sun.jndi.ldap.LdapCtxFactory");
env.put(Context.PROVIDER_URL, "ldap://test.mycomp.com:389");
env.put(Context.SECURITY_AUTHENTICATION, "Simple");
env.put(Context.SECURITY_PRINCIPAL,"uid=test.gen,OU=Generics,O=test.mycomp.com");
env.put(Context.SECURITY_CREDENTIALS, "test123");
DirContext dirContext = new InitialDirContext(env);
System.out.println("loaded dirContext");

我有以下代码来获取基本 DN，我一直在返回基本 DN 名称，但我想优化我的过滤器，而不是放置 2 个循环来获取基本 DN，

    SearchControls constraints = new SearchControls();
    constraints.setSearchScope(SearchControls.OBJECT_SCOPE);
    NamingEnumeration results = dirContext.search("",
            "(&(objectClass=organization)(objectClass=top))", constraints);

        // Fail if no entries found
    if (results == null || !results.hasMore()) {
        System.out.println("No result found");
        return;
    }

    while(results.hasMoreElements()){
        Object res = results.next();
        SearchResult serResult = (SearchResult) res;
        Attributes atts = serResult.getAttributes();
        System.out.println(atts.toString());
        Attribute baseAttr = atts.get("namingContexts");
        NamingEnumeration  ids = baseAttr.getAll();
        while(ids.hasMoreElements()){
            Object obj = ids.next();
            System.out.println(obj.toString());
        }
    }

请帮助我优化我的过滤器。

Answer 1

您不需要搜索。只需从InitialContext 中获取namingContexts 属性即可。

Attributes atttrs = context.getAttributes("", new String[]{"namingContexts"});