如何从 UserDetailsService 获取 HttpServletRequest 信息

Question

I'm working with spring security and I have implemented my costume UserDetailsService.loadUserByUsername that returns a costume UserDetails. My problem is that I want in my UserDetailsService implementation to get information from the HttpServletRequest, more specific I would like to get request.getLocale(); How can i do this?

Answer 1

You should be able (depending on your config) to use

LocaleContextHolder.getLocaleContext().getLocale();

LocaleContextHolder stores a static ThreadLocal object that stores the Locale for your request.

You might have to register a RequestContextListener with your Servlet container.

Answer 2

您可以将其从控制器传递到Service，并向Service添加新参数

Answer 3

I'm leaving this for others as I could not find the answer elsewhere. After some tinkering, I found that you can just add the request to the bean as such:

@Configuration
public class SecurityConfig {
    @Bean
    public UserDetailsService userDetailsService(MyRepository repository, HttpServletRequest request) {
        return username -> {
            UserDetails userDetails = repository.findByEmail(username);
            if (userDetails != null) {
                log.info("login." + userDetails);
                return userDetails;
            }
            String locale = request.getLocale().getDisplayName();
            String message = "not.found[" + username + "].locale[" + locale + "]";
            log.error(message);
            throw new UsernameNotFoundException(message);
        };
    }
}