我想创建一个新的应用程序，使用Sping Boot 版本3和Java 17，并使用SAML 2令牌身份验证。在编写SecurityConfig类时，由于它无法扩展Spring 3中的WebSecurityConfigurerAdapter类，因此我不知道如何在SAMLProcessingFilter中提供authenticationManager，以便在FilterChainProxy中提供。我的SecurityConfig类位于以下代码行：
samlWebSSO处理过滤器。设置验证管理器（？？？）;

`@Configuration
@EnableWebSecurity
@EnableMethodSecurity
public class SecurityConfig {

    @Value("${saml.sp}")
    private String samlAudience;

    @Autowired
    @Qualifier("saml")
    private SavedRequestAwareAuthenticationSuccessHandler samlAuthSuccessHandler;

    @Autowired
    @Qualifier("saml")
    private SimpleUrlAuthenticationFailureHandler samlAuthFailureHandler;

    @Autowired
    private SAMLEntryPoint samlEntryPoint;

    @Autowired
    private SAMLLogoutFilter samlLogoutFilter;

    @Autowired
    private SAMLLogoutProcessingFilter samlLogoutProcessingFilter;

    @Autowired
    private HttpSecurity httpSecurity;

    @Bean
    public SAMLDiscovery samlDiscovery() {
        SAMLDiscovery idpDiscovery = new SAMLDiscovery();
        return idpDiscovery;
    }

    @Autowired
    private SAMLAuthenticationProvider samlAuthenticationProvider;

    @Autowired
    private ExtendedMetadata extendedMetadata;

    @Autowired
    private KeyManager keyManager;

    public MetadataGenerator metadataGenerator() {
        MetadataGenerator metadataGenerator = new MetadataGenerator();
        metadataGenerator.setEntityId(samlAudience);
        metadataGenerator.setExtendedMetadata(extendedMetadata);
        metadataGenerator.setIncludeDiscoveryExtension(false);
        metadataGenerator.setKeyManager(keyManager);
        return metadataGenerator;
    }

    @Bean
    public SAMLProcessingFilter samlWebSSOProcessingFilter(HttpSecurity http) throws Exception {
        SAMLProcessingFilter samlWebSSOProcessingFilter = new SAMLProcessingFilter();
        //AuthenticationManager authenticationManager = http.getSharedObject(AuthenticationManager.class);
        //**What should I give in below line**
        samlWebSSOProcessingFilter.setAuthenticationManager(authenticationManager());
        samlWebSSOProcessingFilter.setAuthenticationSuccessHandler(samlAuthSuccessHandler);
        samlWebSSOProcessingFilter.setAuthenticationFailureHandler(samlAuthFailureHandler);
        return samlWebSSOProcessingFilter;
    }

    @Bean
    public FilterChainProxy samlFilter(HttpSecurity http) throws Exception {
        List<SecurityFilterChain> chains = new ArrayList<>();
        chains.add(new DefaultSecurityFilterChain(new AntPathRequestMatcher("/saml/SSO/**"),
            samlWebSSOProcessingFilter(http)));
        chains.add(new DefaultSecurityFilterChain(new AntPathRequestMatcher("/saml/discovery/**"),
            samlDiscovery()));
        chains.add(new DefaultSecurityFilterChain(new AntPathRequestMatcher("/saml/login/**"),
            samlEntryPoint));
        chains.add(new DefaultSecurityFilterChain(new AntPathRequestMatcher("/saml/logout/**"),
            samlLogoutFilter));
        chains.add(new DefaultSecurityFilterChain(new AntPathRequestMatcher("/saml/SingleLogout/**"),
            samlLogoutProcessingFilter));
        return new FilterChainProxy(chains);
    }

    @Bean
    public AuthenticationManager authenticationManager(AuthenticationConfiguration authConfig) throws Exception {
        return authConfig.getAuthenticationManager();
    }

    @Bean
    public MetadataGeneratorFilter metadataGeneratorFilter() {
        return new MetadataGeneratorFilter(metadataGenerator());
    }

    //@Override
    protected void configure(HttpSecurity http) throws Exception {
        http
        .csrf()
        .disable();

        http
        .httpBasic()
        .authenticationEntryPoint(samlEntryPoint);

        http
        .addFilterBefore(metadataGeneratorFilter(), ChannelProcessingFilter.class)
        .addFilterAfter(samlFilter(http), BasicAuthenticationFilter.class)
        .addFilterBefore(samlFilter(http), CsrfFilter.class);

        http
        .authorizeRequests()
        .requestMatchers("/").permitAll()
        .anyRequest().authenticated();

        http
        .logout()
        .addLogoutHandler((request, response, authentication) -> {
            try {
                response.sendRedirect("/saml/logout");
            } catch (IOException e) {
                e.printStackTrace();
            }
        });
    }

    @Bean
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.authenticationProvider(samlAuthenticationProvider);
    }
}`