java – 使用JNDI的LDAP用户密码验证

public static void main(String[] args)
{
    String INITCTX = "com.sun.jndi.ldap.LdapCtxFactory";
    String MY_HOST = "ldap://Localhost:1389";
    String MGR_DN = "cn=John,ou=Users,o=IT,dc=QuizPortal";
    String MGR_PW = "password";           

    //Identify service provider to use
    Hashtable env = new Hashtable();
    env.put(Context.INITIAL_CONTEXT_FACTORY,INITCTX);
    env.put(Context.PROVIDER_URL,MY_HOST);
    env.put(Context.Security_AUTHENTICATION,"simple");
    env.put(Context.Security_PRINCIPAL,MGR_DN);
    env.put(Context.Security_CREDENTIALS,MGR_PW);

    try
    {
        // Create the initial directory context
        InitialDirContext initialContext = new InitialDirContext(env);

        System.out.println("Context Sucessfully Initialized");
    }
    catch(Exception e)
    {
        System.err.println(e);
    }
}

我想询问何时将MGR_DN =“cn = John,ou = Users,o = IT,dc = QuizPortal”设置为MGR_DN =“uid = 103,dc = QuizPortal”.基本上从cn到uid,我会遇到一个错误

javax.naming.AuthenticationException: [LDAP: error code 49 - Invalid Credentials]

当我被指定为cn = John但不是uid = 103时我被认证.我不允许用uid指定吗？