@Bean
public EmbeddedLdapServerContextSourceFactoryBean contextSourceFactoryBean() {
	EmbeddedLdapServerContextSourceFactoryBean contextSourceFactoryBean =
			EmbeddedLdapServerContextSourceFactoryBean.fromEmbeddedLdapServer();
	contextSourceFactoryBean.setPort(0);
	return contextSourceFactoryBean;
}

@Bean
AuthenticationManager authenticationManager(BaseLdapPathContextSource contextSource) {
	LdapBindAuthenticationManagerFactory factory = new LdapBindAuthenticationManagerFactory(contextSource);
	factory.setUserDnPatterns("uid={0},ou=people");
	factory.setUserDetailsContextMapper(new PersonContextMapper());
	return factory.createAuthenticationManager();
}

@Bean
UnboundIdContainer ldapContainer() {
	UnboundIdContainer container = new UnboundIdContainer("dc=springframework,dc=org", "classpath:users.ldif");
	container.setPort(0);
	return container;
}

@Bean
ContextSource contextSource(UnboundIdContainer container) {
	int port = container.getPort();
	return new DefaultSpringSecurityContextSource("ldap://localhost:" + port + "/dc=springframework,dc=org");
}

@Bean
BindAuthenticator authenticator(BaseLdapPathContextSource contextSource) {
	BindAuthenticator authenticator = new BindAuthenticator(contextSource);
	authenticator.setUserDnPatterns(new String[] { "uid={0},ou=people" });
	return authenticator;
}

@Bean
LdapAuthenticationProvider authenticationProvider(LdapAuthenticator authenticator) {
	LdapAuthenticationProvider provider = new LdapAuthenticationProvider(authenticator);
	provider.setUserDetailsContextMapper(new PersonContextMapper());
	return provider;
}