oauth2Login success mapping

AuthController.java

  @Autowired
  OAuth2AuthorizedClientService authclientService;

    @RequestMapping("/oauth2LoginSuccess")
	public String getOauth2LoginInfo(Model model,@AuthenticationPrincipal OAuth2AuthenticationToken authenticationToken) {
		// fetching the client details and user details 
		System.out.println(authenticationToken.getAuthorizedClientRegistrationId()); // client name like facebook, google etc.
		System.out.println(authenticationToken.getName()); // facebook/google userId
		
		//		1.Fetching User Info
		OAuth2User user = authenticationToken.getPrincipal(); // When you login with OAuth it gives you OAuth2User else UserDetails
		System.out.println("userId: "+user.getName()); // returns the userId of facebook something like 12312312313212
		// getAttributes map Contains User details like name, email etc// print the whole map for more details
		System.out.println("Email:"+ user.getAttributes().get("email"));
        
		//2. Just in case if you want to obtain User's auth token value, refresh token, expiry date etc you can use below snippet
	       OAuth2AuthorizedClient client = authclientService
	         .loadAuthorizedClient(authenticationToken.getAuthorizedClientRegistrationId(), 
				  authenticationToken.getName());
              System.out.println("Token Value"+ client.getAccessToken().getTokenValue()); 
		
	   //3. Now you have full control on users data.You can eitehr see if user is not present in Database then store it and 
	   // send welcome email for the first time 
	    model.addAttribute("name", user.getAttribute("name"));
	    return "home";
	}