How to pass Authorization Header in curl from Swagger3?

I have used the latest springfox starter in my spring boot application, and it would integrate with OAuth2, but when I integrate the OAuth in securitySchema as below:

GrantType grantType = new ResourceOwnerPasswordCredentialsGrant(contextRoot + "/token");
SecurityScheme oauth = new OAuthBuilder().name("spring_oauth")
    .grantTypes(Arrays.asList(grantType))
    .scopes(Arrays.asList(authorizationScopes))
    .build();

The authorization part I can find the access token, etc, but when try the api from curl, I did not see any Authorization Header there, I used OAS_3 in my application, any one can provide comment/suggestion?