Spring boot rest service options 401 on oauth/token

Question

I\'m using spring boot to make a simple rest service. To consume it in Angular 2, I\'ve got CORS problem when retrieving token on oauth/token endpoint.

The error mes

Answer 1

The browser checks CORS settings via a request with OPTIONS header. And if you've configured authorization, OPTIONS request will be blocked as unauthorized.

You simply can add cors support in WebConfigurerAdapter.

@EnableWebSecurity
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
    @Override
    protected void configure(HttpSecurity http) throws Exception {
        // ...
        http.cors();
    }
}

Check this link for more info: https://www.baeldung.com/spring-security-cors-preflight