package com.example.demo.controller;
import com.example.demo.dto.Code2SessionResponse;
import com.example.demo.entity.User;
import com.example.demo.service.RedisService;
import com.example.demo.service.RedisServiceImpl;
import com.example.demo.service.UserService;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.client.RestTemplate;
import java.util.Map;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@RestController
@RequestMapping("/auth")
public class AuthController {
private static final Logger logger = LoggerFactory.getLogger(RedisServiceImpl.class); // 创建 Logger 实例
@Autowired
private UserService userService;
@Autowired
private RedisService redisService;
private final String APP_ID = "wx792c8ea56d700e6f"; // 微信小程序的 AppID
private final String APP_SECRET = "bbed35c3f43613b44845e7a2859c2058"; // 微信小程序的 AppSecret
@PostMapping("/login")
public ResponseEntity<?> login(@RequestBody Map<String, String> request) {
String code = request.get("code");
if (code == null || code.isEmpty()) {
return ResponseEntity.badRequest().body("Missing code");
}
// 1.1 构造微信 API 请求 URL
String url = String.format("https://api.weixin.qq.com/sns/jscode2session?appid=%s&secret=%s&js_code=%s&grant_type=authorization_code",
APP_ID, APP_SECRET, code);
RestTemplate restTemplate = new RestTemplate();
ResponseEntity<String> response;
try {
// 1.2 调用微信的 code2Session 接口
response = restTemplate.getForEntity(url, String.class);
logger.info("成功获取微信API响应 response : {}", response);
} catch (Exception e) {
return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body("请求微信 API 失败: " + e.getMessage());
}
if (response.getStatusCode() != HttpStatus.OK) {
return ResponseEntity.status(response.getStatusCode()).body("请求微信 API 失败");
}
// 2. 使用 code2SessionResponse(dto) 进行响应解析
String responseBody = response.getBody(); // 获取响应体
ObjectMapper objectMapper = new ObjectMapper(); // 使用 Jackson 进行 JSON 解析
Code2SessionResponse code2SessionResponse;
try {
code2SessionResponse = objectMapper.readValue(responseBody, Code2SessionResponse.class);
} catch (JsonProcessingException e) {
return ResponseEntity.badRequest().body("解析响应失败: " + e.getMessage());
}
if (code2SessionResponse != null) {
if (code2SessionResponse.isSuccessful()) {
// 3. 数据库查询或存储
User user = userService.loginOrRegister(code2SessionResponse.getOpenid());
// 存储或更新 session_key,设置过期时间为 30 分钟
redisService.storeOrUpdateSession(code2SessionResponse.getOpenid(), code2SessionResponse.getSession_key(), 30);
return ResponseEntity.ok(Map.of("openid", code2SessionResponse.getOpenid()));
} else {
return handleErrorResponse(code2SessionResponse);
}
} else {
return ResponseEntity.badRequest().body("获取 OpenID 失败,未返回有效数据");
}
}
private ResponseEntity<String> handleErrorResponse(Code2SessionResponse response) {
int errcode = response.getErrcode();
String errmsg = response.getErrmsg();
switch (errcode) {
case 40029:
return ResponseEntity.badRequest().body("错误:js_code无效");
case 45011:
return ResponseEntity.status(HttpStatus.TOO_MANY_REQUESTS).body("错误:API 调用太频繁,请稍候再试");
case 40226:
return ResponseEntity.status(HttpStatus.FORBIDDEN).body("错误:高风险等级用户,小程序登录拦截");
case -1:
return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body("错误:系统繁忙,请稍候再试");
default:
return ResponseEntity.badRequest().body("获取 OpenID 失败: " + errmsg);
}
}
// TODO
// @PostMapping("/register") // 完整路径为 /auth/register
// public ResponseEntity<?> register(@RequestBody RegisterRequest request) {
// // 注册逻辑
// return null;
// }
//
// @PostMapping("/logout") // 完整路径为 /auth/logout
// public ResponseEntity<?> logout(@RequestBody LogoutRequest request) {
// // 注销逻辑
// return null;
// }
//
// @PostMapping("/reset-password") // 完整路径为 /auth/reset-password
// public ResponseEntity<?> resetPassword(@RequestBody ResetPasswordRequest request) {
// // 密码重置逻辑
// return null;
// }
}
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