Java模拟实现QQ三方登录（单点登录2.0）

package cn.it1995.login.controller;
 
import cn.it1995.login.util.CookieUtil;
import cn.it1995.login.util.Result;
import com.alibaba.fastjson.JSON;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.ResponseEntity;
import org.springframework.util.LinkedMultiValueMap;
import org.springframework.util.MultiValueMap;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;
 
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
 
 
@RestController
public class MyController {
 
 @Autowired
 private RestTemplate restTemplate;
 
 private static final String USER_KEY="user_key";
 
 private ConcurrentMap<String, Object> user = new ConcurrentHashMap<>();
 
 @GetMapping("/getUser")
 public Object getUser(HttpServletRequest request, HttpServletResponse response){
 
  String loginCookie = CookieUtil.getLoginCookie(request, response);
  Object o = user.get(loginCookie);
  return Result.success(o);
 }
 
 @PostMapping("/loginByQQ")
 public Object loginByQQ(String token, HttpServletResponse response, HttpServletRequest request){
 
  MultiValueMap<String, Object> paramMap = new LinkedMultiValueMap();
  paramMap.add("token", token);
  ResponseEntity<Object> objectResponseEntity = restTemplate.postForEntity("http://127.0.0.7:8081/getLoginInfo", paramMap, Object.class);
  Object body = objectResponseEntity.getBody();
  String uuid = CookieUtil.setLoginCookie(request, response);
 
  //json标准化
  String newJson = body.toString().replace("=", ":");
  System.out.println(newJson);
 
  Map map = JSON.parseObject(newJson, Map.class);
  Map data = JSON.parseObject(map.get("data").toString(), Map.class);
  user.put(uuid, data);
  return Result.success();
 }
}

package cn.it1995.qqServer.controller;
 
import cn.it1995.qqServer.util.JwtUtil;
import cn.it1995.qqServer.util.Result;
import com.alibaba.fastjson.JSON;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.*;
 
import java.util.HashMap;
import java.util.Map;
import java.util.UUID;
 
 
@Controller
public class UserController {
 
 @ResponseBody
 @RequestMapping("/login")
 public Object login(@RequestParam("username") String username,
      @RequestParam("password") String password){
 
  Map<String, Object> map = new HashMap<>();
  map.put("username", username);
  map.put("password", password);
  String jwt = JwtUtil.createJWT(UUID.randomUUID().toString(), JSON.toJSONString(map), 3600 * 24);
  return jwt;
 }
 
 @ResponseBody
 @RequestMapping("/getLoginInfo")
 public Object getLoginInfo(String token){
 
  String subject = JwtUtil.parseJWT(token).getSubject();
  return Result.success().data(subject);
 }
 
}