Como configurar o Spring Security para permitir que o URL do Swagger seja acessado sem autenticação

Meu projeto tem Spring Security. Problema principal: não é possível acessar o URL do swagger emhttp: // localhost: 8080 / api / v2 / api-docs. Diz cabeçalho de autorização ausente ou inválido.

Captura de tela da janela do navegador Meu pom.xml possui as seguintes entradas

<dependency>
        <groupId>io.springfox</groupId>
        <artifactId>springfox-swagger2</artifactId>
        <version>2.4.0</version>
    </dependency>

    <dependency>
        <groupId>io.springfox</groupId>
        <artifactId>springfox-swagger-ui</artifactId>
        <version>2.4.0</version>
    </dependency>

SwaggerConfig:

@Configuration
@EnableSwagger2
public class SwaggerConfig {

@Bean
public Docket api() {
    return new Docket(DocumentationType.SWAGGER_2).select()
            .apis(RequestHandlerSelectors.any())
            .paths(PathSelectors.any())
            .build()
            .apiInfo(apiInfo());
}

private ApiInfo apiInfo() {
    ApiInfo apiInfo = new ApiInfo("My REST API", "Some custom description of API.", "API TOS", "Terms of service", "[email protected]", "License of API", "API license URL");
    return apiInfo;
}

AppConfig:

@Configuration
@EnableWebMvc
@ComponentScan(basePackages = { "com.musigma.esp2" })
@Import(SwaggerConfig.class)
public class AppConfig extends WebMvcConfigurerAdapter {

// ========= Overrides ===========

@Override
public void addInterceptors(InterceptorRegistry registry) {
    registry.addInterceptor(new LocaleChangeInterceptor());
}

@Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
    registry.addResourceHandler("swagger-ui.html")
      .addResourceLocations("classpath:/META-INF/resources/");

    registry.addResourceHandler("/webjars/**")
      .addResourceLocations("classpath:/META-INF/re,sources/webjars/");
}

Entradas web.xml:

<context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>
        com.musigma.esp2.configuration.AppConfig
        com.musigma.esp2.configuration.WebSecurityConfiguration
        com.musigma.esp2.configuration.PersistenceConfig
        com.musigma.esp2.configuration.ACLConfig
        com.musigma.esp2.configuration.SwaggerConfig
    </param-value>
</context-param>

WebSecurityConfig:

@Configuration
@EnableWebSecurity
@EnableGlobalMethodSecurity(prePostEnabled = true)
@ComponentScan(basePackages = { "com.musigma.esp2.service", "com.musigma.esp2.security" })
public class WebSecurityConfiguration extends WebSecurityConfigurerAdapter {
@Override
    protected void configure(HttpSecurity httpSecurity) throws Exception {
        httpSecurity
        .csrf()
            .disable()
        .exceptionHandling()
            .authenticationEntryPoint(this.unauthorizedHandler)
            .and()
        .sessionManagement()
            .sessionCreationPolicy(SessionCreationPolicy.STATELESS)
            .and()
        .authorizeRequests()
            .antMatchers("/auth/login", "/auth/logout").permitAll()
            .antMatchers("/api/**").authenticated()
            .anyRequest().authenticated();

        // custom JSON based authentication by POST of {"username":"<name>","password":"<password>"} which sets the token header upon authentication
        httpSecurity.addFilterBefore(loginFilter(), UsernamePasswordAuthenticationFilter.class);

        // custom Token based authentication based on the header previously given to the client
        httpSecurity.addFilterBefore(new StatelessTokenAuthenticationFilter(tokenAuthenticationService), UsernamePasswordAuthenticationFilter.class);
    }
}

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