Spring Security Configuration @Order not unique exception

Maybe you have annotated another class with the @EnableWebSecurity annotation. Be aware that only one class can implement this annotation. Hope that will help!

It may be worth noting, the @Order annotation should be at the class level. This is a bit confusing since @Journeycorner configuration is a multiclass example. My example with imports :)

import org.springframework.beans.factory.annotation.Autowired; 
import org.springframework.context.annotation.Configuration;
import org.springframework.core.annotation.Order;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;

import com.someco.entity.User;
import com.someco.service.SpringDataJpaUserDetailsService;

@Configuration("CustomSecurityConfig")
@EnableWebSecurity
@EnableGlobalMethodSecurity(prePostEnabled = true)
@Order(1000)                                                        
public class SecurityConfiguration extends WebSecurityConfigurerAdapter {

@Autowired
private SpringDataJpaUserDetailsService userDetailsService;

@Override
protected void configure(AuthenticationManagerBuilder auth) throws Exception {
    auth
        .userDetailsService(this.userDetailsService)
            .passwordEncoder(User.PASSWORD_ENCODER);
}

@Override
protected void configure(HttpSecurity http) throws Exception {
    http
        .authorizeRequests()
            .antMatchers("/built/**", "/main.css").permitAll()
            .anyRequest().authenticated()
            .and()
        .formLogin()
            .defaultSuccessUrl("/", true)
            .permitAll()
            .and()
        .httpBasic()
            .and()
        .csrf().disable()
        .logout()
            .logoutSuccessUrl("/");
}

}