How do I get user details after user successfuly logs in with GitHub? I want to save some of the fields into databases

Question

I'm trying to get few fields out of user's info when user logs in with Github. Info that I'm trying to get is 'login', 'bio', 'url'. How do I save specific fields to DB?

When I use Authentication authentication = SecurityContextHolder.getContext() .getAuthentication(); authentication.getPrincipal() I get all user's info and don't know how to pull out specific fields. This is a response I'm getting:

    Name: [18630847], Granted Authorities: [ROLE_USER], User Attributes: 
    [login=Blahblah, id=123456789, node_id=4tfg4fg43g, 
    avatar_url=https://avatars1.githubusercontent.com/u/12345678?v=4, 
    gravatar_id=, url=https://api.github.com/users/Blahblah, 
    html_url=https://github.com/blahblah, 
    followers_url=https://api.github.com/users/blahblah/followers, ...... 
    private_repos=10000}]

I also tried casting this to Map but didn't happen.

# Databases
spring.h2.console.enabled=true
spring.h2.console.path=/h2
spring.datasource.url=jdbc:h2:mem:test
spring.datasource.username=ruslan

# GitHub
spring.security.oauth2.client.registration.github.client-id=${github-id}
spring.security.oauth2.client.registration.github.client-secret=${github-secret}

    @GetMapping("/loginSuccess")
    public String getLoginInfo(Model model) {
        Authentication authentication = SecurityContextHolder.getContext()
                .getAuthentication();
        model.addAttribute("userd", authentication.getPrincipal().toString());
        return "client";
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception {

        http.authorizeRequests()
                .antMatchers("/").permitAll()
                .anyRequest().authenticated()
                .and()
                .oauth2Login()
                .defaultSuccessUrl("/loginSuccess")
                .and()
                .logout().logoutSuccessUrl("/index")//permitall
                .and()
                    .csrf().disable()
                    .headers().frameOptions().disable();

    }

public interface UserRepository extends JpaRepository<User, Long> {

//    User findByUsername(String username);

}

@Setter
@Getter
@Entity
public class User {

    @Id
    @GeneratedValue
    private long id;

    private String login;

//    private String password;

    @OneToMany(fetch = FetchType.EAGER, cascade=CascadeType.ALL)
    private List<Role> roles;

    public User(String login, String password) {
        this.login = login;
    }

I want to save user's specific fields such as 'login', 'name', 'bio' into my DB.

S.Step · Accepted Answer · 2019-08-10T14:34:29.243

Principal object should be instance of OAuth2AuthenticationToken

@GetMapping("/loginSuccess")
public String getLoginInfo(Model model) {
    Authentication authentication = SecurityContextHolder.getContext()
            .getAuthentication();

    //Add this:
    Object principal = authentication.getPrincipal();
    if(principal instanceof OAuth2AuthenticationToken){
      OAuth2AuthenticationToken oAuth2AuthenticationToken = (OAuth2AuthenticationToken)principal;
     //By default its DefaultOAuth2User.
     OAuth2User oAuth2User = oAuth2AuthenticationToken.getPrincipal();
    }

     Map<String,Object> attributes =  oAuth2User.getAttributes();

    //now you can retrieve all attribute values you are interested from attributes map and store or return to view...


   // your logic here



    return "client";
}

How do I get user details after user successfuly logs in with GitHub? I want to save some of the fields into databases

1 Answers1