How to Query LDAP Search with Plain Java Library

Here is my code that works

 LdapContextSource contextSource = new LdapContextSource();
        contextSource.setUrl(ldapUrls);
        contextSource.setBase(ldapBaseDn);
        contextSource.setUserDn(username + "@example.com");
        contextSource.setPassword(password);
        contextSource.afterPropertiesSet();

        // LDAP bind happens here
        // ldapTemplate.bind have DIFFERENT meaning
        // In Java, it is insert data into directory
        ldapTemplate.setContextSource(contextSource);

        List<LdapUserDetails> users = ldapTemplate.search("", "(cn=" + username + ")", new LdapUserDetailsMapper());

The magic happens here

It works like ORM’s .save() so the configuration is persist into the object.

contextSource.afterPropertiesSet();

Then you can query as you normally do.

Reference

My life saver

https://stackoverflow.com/questions/63170932/spring-ldaptemplate-how-to-modify-the-contextsource-configuration