SecurityConfig.java

package thymeleafexamples.layouts.config;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.authentication.AuthenticationManager;
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 org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.web.authentication.rememberme.TokenBasedRememberMeServices;
import thymeleafexamples.layouts.account.AccountService;


@Configuration
@EnableWebSecurity
@EnableGlobalMethodSecurity(securedEnabled = true)
class SecurityConfig extends WebSecurityConfigurerAdapter {

    @Autowired
    private AccountService accountService;

    @Bean
    public TokenBasedRememberMeServices rememberMeServices() {
        return new TokenBasedRememberMeServices("remember-me-key", accountService);
    }

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

    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth
            .eraseCredentials(true)
            .userDetailsService(accountService)
            .passwordEncoder(passwordEncoder());
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http
            .authorizeRequests()
                .antMatchers("/", "/favicon.ico", "/resources/**", "/signup").permitAll()
                .anyRequest().authenticated()
                .and()
            .formLogin()
                .loginPage("/signin")
                .permitAll()
                .failureUrl("/signin?error=1")
                .loginProcessingUrl("/authenticate")
                .and()
            .logout()
                .logoutUrl("/logout")
                .permitAll()
                .logoutSuccessUrl("/signin?logout")
                .and()
            .rememberMe()
                .rememberMeServices(rememberMeServices())
                .key("remember-me-key");
    }

    @Bean(name = "authenticationManager")
    @Override
    public AuthenticationManager authenticationManagerBean() throws Exception {
        return super.authenticationManagerBean();
    }
}