关于对接paypal线上出现token无效的问题

Question

为什么paypal支付本地好使已发到线上就出问题？发布过了几个小时就调不了paypal的支付接口了，报错：com.paypal.base.HttpConnection - Response code: 401 Error response: {"error":"invalid_token","error_description":"Access Token not found in cache"}，我严重怀疑是调用api的token过期了，因为我把项目重新发布一次又好了，但是过了8小时还是会报这个错，我用的是官方的sdk，难道paypal的官方sdk不会自动维护token吗？我自己加上了等token过期前五分钟刷新token的逻辑还加了缓存，但是仍然没用，不清楚是为什么，下面是我管理paypal的配置类：

@Configuration
@EnableScheduling
public class PayPalConfig {

@Resource
private Environment env;

@Bean
public Map<String, String> paypalSdkConfig() {
    return Map.of("mode", env.getProperty("spring.pay.paypal.mode"));
}

@Bean
public CacheManager cacheManager() {
    return new ConcurrentMapCacheManager("payPalTokenCache");
}

@Caching(
    cacheable = @Cacheable(value = "payPalTokenCache", key = "'token'"),
    put = @CachePut(value = "payPalTokenCache", key = "'token'")
)
@Bean
public OAuthTokenCredential authTokenCredential() {
    return new OAuthTokenCredential(
        env.getProperty("spring.pay.paypal.clientId"),
        env.getProperty("spring.pay.paypal.clientSecret"),
        paypalSdkConfig()
    );
}

@Bean
public APIContext apiContext() throws PayPalRESTException {
    String accessToken = getValidAccessToken();
    APIContext apiContext = new APIContext(accessToken);
    apiContext.setConfigurationMap(paypalSdkConfig());
    return apiContext;
}

public String getValidAccessToken() {
    OAuthTokenCredential tokenCredential = authTokenCredential();
    String accessToken = tokenCredential.getAccessToken();

    // 检查Token是否即将过期
    if (isTokenExpired(tokenCredential.getExpiresIn())) {
        return refreshAccessToken(tokenCredential);
    }

    return accessToken;
}

@CachePut(value = "payPalTokenCache", key = "'token'")
public String refreshAccessToken(OAuthTokenCredential tokenCredential) {
    return tokenCredential.getAccessToken(); 
}

public boolean isTokenExpired(long expiresIn) {
    // 获取当前时间（毫秒）
    long currentTimeMillis = System.currentTimeMillis();

    // 将expiresIn从秒转换为毫秒，并加上Token的生成时间
    long tokenExpirationTimeMillis = (expiresIn * 1000) + currentTimeMillis;

    // 计算Token到期前剩余的时间
    long timeRemainingMillis = tokenExpirationTimeMillis - currentTimeMillis;

    // 如果剩余时间小于等于5分钟，则认为Token已过期
    return timeRemainingMillis <= 5 * 60 * 1000;
}

}

Answer 1

你是不是缺少一个自动刷新token的方法？前端定时调的，