这可能不是完整的答案，因为我自己也在努力解决这个问题。我正在使用自定义身份验证提供程序和自定义用户详细信息服务。我看到了与您相同的行为 - 断点在我的用户详细信息服务中被点击，但在我的身份验证提供程序中没有。这是我整个配置类的样子：

This might not be the complete answer, as I'm struggling with this a bit myself. I'm using a custom authentication provider and a custom user details service. I see the same behavior as you -- breakpoints get hit in my user details service, but not in my authentication provider. Here is what my entire config class looks like:

@Configuration
@EnableWebMvcSecurity
@EnableGlobalMethodSecurity(prePostEnabled = true)
public class SecurityConfig extends WebSecurityConfigurerAdapter {

    @Autowired
    private CustomUserDetailsService userDetailsService;
    @Autowired
    private CustomAuthenticationProvider customAuthenticationProvider;

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

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        AuthenticationProvider rememberMeAuthenticationProvider = rememberMeAuthenticationProvider();
        TokenBasedRememberMeServices tokenBasedRememberMeServices = tokenBasedRememberMeServices();

        List<AuthenticationProvider> authenticationProviders = new ArrayList<AuthenticationProvider>(2);
        authenticationProviders.add(rememberMeAuthenticationProvider);
        authenticationProviders.add(customAuthenticationProvider);
        AuthenticationManager authenticationManager = authenticationManager(authenticationProviders);

        http
                .csrf().disable()
                .headers().disable()
                .addFilter(new RememberMeAuthenticationFilter(authenticationManager, tokenBasedRememberMeServices))
                .rememberMe().rememberMeServices(tokenBasedRememberMeServices)
                .and()
                .authorizeRequests()
                .antMatchers("/js/**", "/css/**", "/img/**", "/login", "/processLogin").permitAll()
                .antMatchers("/index.jsp", "/index.html", "/index").hasRole("USER")
                .antMatchers("/admin", "/admin.html", "/admin.jsp", "/js/saic/jswe/admin/**").hasRole("ADMIN")
                .and()
                .formLogin().loginProcessingUrl("/processLogin").loginPage("/login").usernameParameter("username").passwordParameter("password").permitAll()
                .and()
                .exceptionHandling().accessDeniedPage("/login")
                .and()
                .logout().permitAll();
    }

    @Override
    public void configure(WebSecurity web) throws Exception {
        web.ignoring().antMatchers("/js/**", "/css/**", "/img/**");
    }

    @Bean
    public BCryptPasswordEncoder bCryptPasswordEncoder(){
        return new BCryptPasswordEncoder();
    }

    @Bean
    public AuthenticationManager authenticationManager(List<AuthenticationProvider> authenticationProviders) {
        return new ProviderManager(authenticationProviders);
    }

    @Bean
    public TokenBasedRememberMeServices tokenBasedRememberMeServices() {
        return new TokenBasedRememberMeServices("testKey", userDetailsService);
    }

    @Bean
    public AuthenticationProvider rememberMeAuthenticationProvider() {
        return new org.springframework.security.authentication.RememberMeAuthenticationProvider("testKey");
    }

    protected void registerAuthentication(AuthenticationManagerBuilder auth) throws Exception {
        auth.userDetailsService(userDetailsService).passwordEncoder(bCryptPasswordEncoder());
    }
}

我刚刚发现，如果我专门添加我的HttpSecurity对象的身份验证提供程序，我的断点开始受到攻击：

I've just discovered that if I specifically add my authentication provider to the HttpSecurity object, my breakpoints start getting hit:

http
                .csrf().disable()
                .headers().disable()
                .authenticationProvider(customAuthenticationProvider)

我的目标是让BCryptPasswordEncoder工作，而不是这个配置 - 一切都返回为坏凭据。无论如何，只是想我会分享。

My goal is to get a BCryptPasswordEncoder working, which does not with this config -- everything returns as bad credentials. Anyway, just thought I'd share.