java实现微信、手机号登陆_微信小程序获取手机号授权用户登录功能和注册功能，请用java写出后端代码

由于微信小程序获取手机号授权用户登录和注册功能需要与微信开放平台进行交互，因此需要使用微信开放平台提供的API接口进行开发。以下是Java实现微信、手机号登录的示例代码。

微信登录：

@RequestMapping(value = "/wxLogin", method = RequestMethod.POST)
public ResponseEntity<Map<String, Object>> wxLogin(@RequestBody Map<String, String> params) {
    String code = params.get("code");
    String encryptedData = params.get("encryptedData");
    String iv = params.get("iv");

    // 调用微信开放平台接口获取用户信息
    String sessionKey = getWxSessionKey(code);
    String userInfo = decryptUserInfo(encryptedData, sessionKey, iv);

    // 解析用户信息并进行登录操作
    // ...

    // 返回登录结果
    Map<String, Object> result = new HashMap<>();
    result.put("code", 0);
    result.put("msg", "登录成功");
    return ResponseEntity.ok(result);
}

private String getWxSessionKey(String code) {
    String url = "https://api.weixin.qq.com/sns/jscode2session?appid={APPID}&secret={SECRET}&js_code={CODE}&grant_type=authorization_code";
    url = url.replace("{APPID}", APPID)
             .replace("{SECRET}", SECRET)
             .replace("{CODE}", code);
    RestTemplate restTemplate = new RestTemplate();
    String response = restTemplate.getForObject(url, String.class);
    JSONObject json = JSONObject.parseObject(response);
    return json.getString("session_key");
}

private String decryptUserInfo(String encryptedData, String sessionKey, String iv) {
    try {
        byte[] encryptedDataByte = Base64.decodeBase64(encryptedData);
        byte[] sessionKeyByte = Base64.decodeBase64(sessionKey);
        byte[] ivByte = Base64.decodeBase64(iv);

        Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
        SecretKeySpec secretKeySpec = new SecretKeySpec(sessionKeyByte, "AES");
        IvParameterSpec ivParameterSpec = new IvParameterSpec(ivByte);
        cipher.init(Cipher.DECRYPT_MODE, secretKeySpec, ivParameterSpec);
        byte[] resultByte = cipher.doFinal(encryptedDataByte);
        return new String(resultByte, StandardCharsets.UTF_8);
    } catch (Exception e) {
        throw new RuntimeException("解密用户信息失败", e);
    }
}

手机号登录：

@RequestMapping(value = "/phoneLogin", method = RequestMethod.POST)
public ResponseEntity<Map<String, Object>> phoneLogin(@RequestBody Map<String, String> params) {
    String phone = params.get("phone");
    String code = params.get("code");

    // 验证手机号和验证码是否匹配
    // ...

    // 进行登录操作
    // ...

    // 返回登录结果
    Map<String, Object> result = new HashMap<>();
    result.put("code", 0);
    result.put("msg", "登录成功");
    return ResponseEntity.ok(result);
}

注册功能：

@RequestMapping(value = "/register", method = RequestMethod.POST)
public ResponseEntity<Map<String, Object>> register(@RequestBody Map<String, String> params) {
    String phone = params.get("phone");
    String code = params.get("code");
    String password = params.get("password");

    // 验证手机号和验证码是否匹配
    // ...

    // 注册用户
    // ...

    // 返回注册结果
    Map<String, Object> result = new HashMap<>();
    result.put("code", 0);
    result.put("msg", "注册成功");
    return ResponseEntity.ok(result);
}