伸手系列-苹果apple登录回验-java

直接上代码

@Data
@ApiModel(value="AppleLoginDto", description = "苹果登录信息")
public class AppleLoginDto {
    @ApiModelProperty(value="苹果jwt;必填;",name="identityToken")
    public String identityToken;
    @ApiModelProperty(value="userId;必填;",name="userId")
    public String userId;
    @ApiModelProperty(value="email;非必填;",name="email")
    public String email;


}

@Service
public class AppleLoginService {
    private final String APPLE_AUTH_URL = "https://appleid.apple.com/auth/keys";

    private final String ISS = "https://appleid.apple.com";
    protected Logger logger = LoggerFactory.getLogger(this.getClass());
    public boolean verify(AppleLoginDto appleLoginDto) {
        //这里传过来的identityToken应该是三个.分割,解密之后
        String identityToken = appleLoginDto.getIdentityToken();
        try {
            if (identityToken.split("\.").length > 1){
                String firstDate = new String( base64.decodebase64(identityToken.split("\.")[0]),"UTF-8");
                String claim = new String(base64.decodebase64(identityToken.split("\.")[1]), "UTF-8");
                String kid = JSONObject.parseObject(firstDate).get("kid").toString();
                String aud = JSONObject.parseObject(claim).get("aud").toString();
                String sub = JSONObject.parseObject(claim).get("sub").toString();
                PublicKey publicKey = getPublicKey(kid);
                if (publicKey == null) {
                    logger.error("Apple have no info data!");
                    return false;
                }
                boolean reuslt = verify(publicKey, identityToken, aud, sub);
                if (reuslt) {
                    logger.info("苹果登录授权成功");
                    return true;
                }
            }
        } catch (Exception e) {
            logger.error("苹果登录授权异常:", e.getMessage());
            e.printStackTrace();
        }
        logger.error("identityToken格式不正确");
        return false;
    }

    private PublicKey getPublicKey(String kid) {
        try {
            JSonObject debugInfo = getHttp(APPLE_AUTH_URL);
            if (debugInfo == null) {
                return null;
            }
            JSonObject jsonObject = debugInfo.getJSonObject("body");
            String keys = jsonObject.getString("keys");
            JSonArray jsonArray = JSONObject.parseArray(keys);
            if (jsonArray.isEmpty()) {
                return null;
            }
            for (Object object : jsonArray) {
                JSonObject json = ((JSONObject) object);
                if (json.getString("kid").equals(kid)) {
                    String n = json.getString("n");
                    String e = json.getString("e");
                    BigInteger modulus = new BigInteger(1, base64.decodebase64(n));
                    BigInteger publicExponent = new BigInteger(1, base64.decodebase64(e));
                    RSAPublicKeySpec spec = new RSAPublicKeySpec(modulus, publicExponent);
                    KeyFactory kf = KeyFactory.getInstance("RSA");
                    return kf.generatePublic(spec);
                }
            }
        } catch (Exception e) {
            logger.error("getPublicKey异常!",e.getMessage());
            e.printStackTrace();
        }
        return null;

    }

    private boolean verify(PublicKey key, String jwt, String audience, String subject){
        boolean result = false;
        JwtParser jwtParser = Jwts.parser().setSigningKey(key);
        jwtParser.requireIssuer(ISS);
        jwtParser.requireAudience(audience);
        jwtParser.requireSubject(subject);
        try {
            Jws claim = jwtParser.parseClaimsJws(jwt);
            if (claim != null && claim.getBody().containsKey("auth_time")) {
                return true;
            }
        } catch (ExpiredJwtException e) {
            logger.error("getPublicKey异常{苹果identityToken过期}", e.getMessage());
        } catch (Exception e) {
            logger.error("getPublicKey异常{苹果identityToken非法}", e.getMessage());
        }
        return result;
    }

    private JSonObject getHttp(String url) {
        logger.info("[请求地址]： " + url);
        JSonObject resultJson = new JSonObject();
        resultJson.put("code", -1);
        CloseableHttpClient httpclient = HttpClients.createDefault();
        try {
            HttpGet httpPost = new HttpGet(url);

            CloseableHttpResponse response = httpclient.execute(httpPost);
            try {

                HttpEntity entity = response.getEntity();
                if (response.getStatusLine().getStatusCode() == 200) {
                    String resp = EntityUtils.toString(entity);
                    resultJson.put("code", 0);
                    resultJson.put("body", JSONObject.parseObject(resp));
                } else {
                    resultJson.put("code", response.getStatusLine().getStatusCode());
                    logger.error("[错误码] ：" + response.getStatusLine().getStatusCode());
                    logger.error("[请求地址] ：" + url);
                }

            } finally {
                response.close();
            }
        } catch (ClientProtocolException e) {
            logger.error("[异常] :", e.getMessage());
        } catch (IOException e) {
            logger.error("[异常] :", e.getMessage());
        } finally {
            try {
                httpclient.close();
            } catch (IOException e) {
                logger.error("[httpclient 关闭异常] ： ", e.getMessage());
            }
        }
        return resultJson;
    }
}