package com.company.config;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
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.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;

@Configuration
@EnableWebSecurity
public class AppSecurityConfig extends WebSecurityConfigurerAdapter {

    @Autowired
    @Qualifier("userDetailsService")
    UserDetailsService userDetailsService;

    @Autowired
    public void configureGlobal(AuthenticationManagerBuilder auth) throws Exception{
        auth.userDetailsService(userDetailsService).passwordEncoder(passwordEncoder());
}

@Bean
public PasswordEncoder passwordEncoder() {
    PasswordEncoder encoder = new BCryptPasswordEncoder();
    return encoder;
}


@Override
protected void configure(HttpSecurity http) throws Exception {

    http.authorizeRequests()
            .antMatchers("**/admin/**").access("hasAnyRole('ROLE_ADMIN','ROLE_SUPERADMIN')")
            .antMatchers("/superadmin/**").access("hasRole('ROLE_SUPERADMIN')")
            .antMatchers("**/user/**").access("hasAnyRole('ROLE_USER','ROLE_ADMIN','ROLE_SUPERADMIN')")
            .antMatchers("/resources/**").permitAll()
            .antMatchers("/messages/**").permitAll()
            .and()
            .formLogin()
                .loginPage("/login")
                .usernameParameter("username")
                .passwordParameter("password")
                .defaultSuccessUrl("/user/home")
                .failureUrl("/403")
                .permitAll()
            .and()
                .exceptionHandling().accessDeniedPage("/403")
            .and()
                .logout().logoutUrl("/logout")
            .and()
                .csrf().disable();
    }
}

package com.company.service.impl;

import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.core.userdetails.User;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import com.company.dao.UsuarioDao;
import com.company.model.UserRole;
import com.company.model.Usuario;

@Service("userDetailsService")
public class MyUserDetailsService implements UserDetailsService{

    @Autowired
    private UsuarioDao usuarioDao;


    @Transactional(readOnly=true)
    public UserDetails loadUserByUsername(String username)
            throws UsernameNotFoundException {

        Usuario usuario = usuarioDao.findByChave(username);
        List<GrantedAuthority> authorities = buildUserAuthority(usuario.getUserRole());

        return buildUserForAuthentication(usuario, authorities);

    }

    private User buildUserForAuthentication(Usuario user,
        List<GrantedAuthority> authorities) {

        User usr= new User(user.getUsername(), user.getPassword(),
            user.isEnabled(), true, true, true, authorities);

        System.out.println(usr.toString());
/*
* Prints: org.springframework.security.core.userdetails.User@ae6e27ef:
* Username: SMITH; Password: [PROTECTED]; Enabled: true;
* AccountNonExpired: true; credentialsNonExpired: true; AccountNonLocked:
* true; Not granted any authorities
*/

        return usr;

    }

    private List<GrantedAuthority> buildUserAuthority(Set<UserRole> userRoles){

        Set<GrantedAuthority> setAuths = new HashSet<GrantedAuthority>();

        // Build user's authorities
        for (UserRole userRole : userRoles) {
            setAuths.add(new SimpleGrantedAuthority(userRole.getRole()));
        }

        List<GrantedAuthority> Result = new ArrayList<GrantedAuthority>(setAuths);

        return Result;
    }

}