spring5_demo1/spring5-auth/src/main/java/com/yaozhitech/spring5/controller/LoginController.java

package com.yaozhitech.spring5.controller;

import org.springframework.security.core.annotation.AuthenticationPrincipal;
import org.springframework.security.oauth2.core.user.OAuth2User;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;

@Controller
public class LoginController {

	@GetMapping("/")
	public String index(Model model,
						@AuthenticationPrincipal OAuth2User oauth2User) {
		model.addAttribute("userName", oauth2User.getName());
		model.addAttribute("userAttributes", oauth2User.getAttributes());
		return "index";
	}
}