Response Headers are not exposed to the client application -Spring boot,Spring microservices

 I had this problem and I want to share its solution

I have Angular application that send HTTP requests to the server and the sent process success but the response returns with no headers or at least the default minimum headers. 

I need to read the token and some other information from the header.

Solution:

Response headers are not exposed by default. you must explicitly expose it in your spring boot application, in the WebSecurityConfigurerAdapter class

Add this bean to your web security

@Bean
    public CorsFilter corsFilter() {
        final UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
        final CorsConfiguration config = new CorsConfiguration();
        config.setAllowCredentials(true);       
        config.addAllowedOrigin("*");
        config.addAllowedHeader("*");
        config.addAllowedMethod("OPTIONS");
        config.addAllowedMethod("HEAD");
        config.addAllowedMethod("GET");
        config.addAllowedMethod("PUT");
        config.addAllowedMethod("POST");
        config.addAllowedMethod("DELETE");
        config.addAllowedMethod("PATCH");
        config.addExposedHeader("*");
        source.registerCorsConfiguration("/**", config);
        return new CorsFilter(source);
    }