我在spring中配置oauth2身份验证服务器时遇到问题，我有我的自定义authenticationprovider，我正在定义我自己的authenticationmanager，但是每次我向“/oauth/token”请求令牌时，我都会看到spring在spring定义的providermanager中不断注入并调用默认的daoauthenticationprovider。
这是我的配置类：

@Configuration
public class AuthorizationServerConfiguration extends AuthorizationServerConfigurerAdapter {

    private AuthenticationManager authenticationManager;

    public AuthorizationServerConfiguration(AuthenticationManager authenticationManager) {
        this.authenticationManager = authenticationManager;
    }

    @Bean
    PasswordEncoder passwordEncoder() {
        return PasswordEncoderFactories.createDelegatingPasswordEncoder();
    }

    @Bean
    JwtAccessTokenConverter accessTokenConverter() {
        JwtAccessTokenConverter converter = new JwtAccessTokenConverter();
        return converter;
    }

    @Override
    public void configure(AuthorizationServerEndpointsConfigurer endpoints) throws Exception {
        endpoints.authenticationManager(authenticationManager);
    }

}

@EnableWebSecurity
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
    private AuthenticationProvider authenticationProvider;

    public WebSecurityConfig(AuthenticationProvider authenticationProvider) {
        this.authenticationProvider = authenticationProvider;
    }

    @Override
    @Bean
    public AuthenticationManager authenticationManagerBean() throws Exception {
        return new ProviderManager(authenticationProvider);
    }
}

提前谢谢
编辑

@Service
public class CustomAuthenticationProvider extends AbstractUserDetailsAuthenticationProvider {

    private ADCustomerService adCustomerService;

    public CustomAuthenticationProvider(ADCustomerService adCustomerService) {
        this.adCustomerService = adCustomerService;
    }

    @Override
    protected void additionalAuthenticationChecks(UserDetails userDetails, UsernamePasswordAuthenticationToken authentication) throws AuthenticationException {

    }

    @Override
    protected UserDetails retrieveUser(String username, UsernamePasswordAuthenticationToken authentication) throws AuthenticationException {
        return adCustomerService.retrieveUser(username, authentication);
    }
}