package net.marioosh.ldapdemo;   import java.util.Arrays; import java.util.Collection;   import org.springframework.context.annotation.Configuration; import org.springframework.ldap.core.DirContextOperations; import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder; import org.springframework.security.config.annotation.web.builders.HttpSecurity; import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter; import org.springframework.security.core.GrantedAuthority; import org.springframework.security.core.authority.SimpleGrantedAuthority; import org.springframework.security.ldap.userdetails.LdapAuthoritiesPopulator;   @Configuration public class SecurityConfig extends WebSecurityConfigurerAdapter {   @Override protected void configure(HttpSecurity http) throws Exception { http.authorizeRequests() .anyRequest() .fullyAuthenticated() .and().formLogin(); }   @Override public void configure(AuthenticationManagerBuilder auth) throws Exception { Read more about Active Directory/LDAP authentication with Spring Boot[…]