@Configuration
@EnableWebSecurity
public class ConfigSecurity extends WebSecurityConfigurerAdapter {

    @Autowired
    public void configureGlobal(AuthenticationManagerBuilder auth) throws Exception {
        auth
            .inMemoryAuthentication()
                .withUser("user").password("password").roles("USER");
    }


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

        //.csrf().disable() is commented because i dont want disable this kind of protection
        .authorizeRequests()
                .anyRequest().authenticated()
                .and()
            .formLogin()
                .loginPage("/login")
                .permitAll()
                .and()
            .logout()
                .permitAll();
    }
}

public class InitSecurity extends AbstractSecurityWebApplicationInitializer {

    public InicializarSecurity() {
        super(ConfigSecurity .class);

    }
}

@EnableWebMvc
@ComponentScan(basePackages = {"com.myApp.R10"})
@Configuration
public class ConfigApp extends WebMvcConfigurerAdapter{

    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler("/css/**").addResourceLocations("/css/**");
        registry.addResourceHandler("/img/**").addResourceLocations("/img/**");
        registry.addResourceHandler("/js/**").addResourceLocations("/js/**");
        registry.addResourceHandler("/sound/**").addResourceLocations("/sound/**");
        registry.addResourceHandler("/fonts/**").addResourceLocations("/fonts/**");
    }

    @Override
    public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
        configurer.enable();
    }

    @Bean
      public MessageSource messageSource() {
        ReloadableResourceBundleMessageSource messageSource = new       ReloadableResourceBundleMessageSource();
        messageSource.setBasenames("classpath:messages/messages");
        messageSource.setUseCodeAsDefaultMessage(true);
        messageSource.setDefaultEncoding("UTF-8");
        messageSource.setCacheSeconds(0);// # -1 : never reload, 0 always reload
        return messageSource;
    }
//  THYMELEAF

        @Bean
        public ServletContextTemplateResolver templateResolver() {
            ServletContextTemplateResolver resolver = new ServletContextTemplateResolver();
            resolver.setPrefix("/WEB-INF/views/pagLogin/");
            resolver.setSuffix(".html");
            resolver.setTemplateMode("HTML5");
            resolver.setOrder(0);
            resolver.setCacheable(false);
            return resolver;
        }

        @Bean
        public SpringTemplateEngine templateEngine() {
            SpringTemplateEngine engine  =  new SpringTemplateEngine();
            engine.setTemplateResolver( templateResolver() );
            engine.setMessageSource( messageSource() );



            return engine;
        }

        @Bean
        public ThymeleafViewResolver thymeleafViewResolver() {
            ThymeleafViewResolver resolver  =  new ThymeleafViewResolver();

            resolver.setTemplateEngine( templateEngine() );
            resolver.setOrder(1);

            resolver.setCache( false );
            return resolver;
        }

        @Bean
        public SpringResourceTemplateResolver thymeleafSpringResource() {
            SpringResourceTemplateResolver vista = new SpringResourceTemplateResolver();
            vista.setTemplateMode("HTML5");
            return vista;
        }
}

public class InicializarApp extends AbstractAnnotationConfigDispatcherServletInitializer {

    @Override
    protected Class<?>[] getRootConfigClasses() {
        return null;
    }
@Override
    protected Class<?>[] getServletConfigClasses() {
        return new Class[] { ConfigApp .class };
    }

    @Override
    protected String[] getServletMappings() {
        return new String[]{"/"};
    }

    @Override
    protected Filter[] getServletFilters() {
        return new Filter[] { new HiddenHttpMethodFilter() };
    }
}

@Controller
public class ControllerLogin {



    @RequestMapping(value = "/login", method = RequestMethod.GET)
    public String pageLogin(Model model) {



         return "login";
    }

@Controller
public class HomeController {

        @RequestMapping(value = "/", method = RequestMethod.GET)
        public String home(Model model) {


        return "home";
        }


}

<html xmlns:th="http://www.thymeleaf.org" xmlns:tiles="http://www.thymeleaf.org">
  <head>
    <title tiles:fragment="title">Messages : Create</title>
  </head>
  <body>
    <div tiles:fragment="content">
        <form name="f" th:action="@{/login}" method="post">
            <fieldset>
                <legend>Please Login</legend>
                <div th:if="${param.error}" class="alert alert-error">
                    Invalid username and password.
                </div>
                <div th:if="${param.logout}" class="alert alert-success">
                    You have been logged out.
                </div>

                <label for="username">Username</label>
                    <input type="text" id="username" name="username"/>
                <label for="password">Password</label>
                    <input type="password" id="password" name="password"/>

                <div class="form-actions">
                    <button type="submit" class="btn">Log in</button>
                </div>

                <!-- THIS IS COMMENTED it dont work beacuse i am already using thymeleaf <input type="hidden" name="${_csrf.parameterName}" value="${_csrf.token}"/>  -->


            </fieldset>
        </form>
    </div>


  </body>
</html>

<form name="f" th:action="@{/login}" method="post">
  <fieldset>
    <input type="hidden" th:name="${_csrf.parameterName}" th:value="${_csrf.token}" />
    ...
  </fieldset>
</form>

<dependency>
    <groupId>org.thymeleaf.extras</groupId>
    <artifactId>thymeleaf-extras-springsecurity3</artifactId>
    <version>2.1.2.RELEASE</version>
</dependency>

import org.thymeleaf.extras.springsecurity3.dialect.SpringSecurityDialect;
templateEngine.addDialect(new SpringSecurityDialect()); //add this line in your config