@Bean
    public CorsConfigurationSource corsConfigurationSource() {
        CorsConfiguration corsConfiguration = new CorsConfiguration();
        corsConfiguration.setAllowedHeaders(List.of("Authorization", "Cache-Control", "Content-Type", "Access-Control-Allow-Origin"));
        corsConfiguration.addAllowedOriginPattern("*");
        corsConfiguration.setAllowedMethods(List.of("GET", "POST", "PUT", "DELETE", "PUT","OPTIONS","PATCH", "DELETE"));
        corsConfiguration.setAllowCredentials(true);
        corsConfiguration.setExposedHeaders(List.of("Authorization"));
        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
        source.registerCorsConfiguration("/**", corsConfiguration);
        return source;
    }