Alexa帐户链接-如果链接的访问令牌过期怎么办？我正在使用隐式赠款流

Question

​我正在尝试使用alexa帐户链接的隐式授权流。我的访问令牌仅在一年内有效。

1. 如何要求用户再次登录以获取新的访问令牌
2. 我可以与Amazon共享刷新令牌而不是访问令牌吗

Answer 1

如果您使用隐式授权，则没有刷新令牌。当令牌过期时，您应该做的是将显示卡重定向到授权服务器。

Answer 2

在API中检查访问令牌是否仍然有效。如果没有，则发送帐户链接卡，并告诉用户需要检查Alexa应用程序以重新链接帐户。以下是如何使用Alexa Skills Kit SDK for Node发送帐户链接卡。js（v2）（请参见withLinkAccountCard（）调用）：

const OrderCarIntentHandler = {

  // ...

  handle(handlerInput){

    // This intent requires an access token so that we can get the user's
    // Ride Hailer user profile with payment information.

    // The access token is in the Context object. Access the
    // request in the HandlerInput object passed to the
    // handler.

    var accessToken = handlerInput.requestEnvelope.context.System.user.accessToken;

    if (accessToken == undefined){
        // The request did not include a token, so tell the user to link
        // accounts and return a LinkAccount card
        var speechText = "You must have a Ride Hailer account to order a car. " +
                    "Please use the Alexa app to link your Amazon account " +
                    "with your Ride Hailer Account.";

        return handlerInput.responseBuilder
            .speak(speechText)
            .withLinkAccountCard()
            .getResponse();
    } else {

        // Use the token to access the user's profile. This should also verify that the
        // token represents a valid Ride Hailer user.

        // ...

    }
  }
}; 

https://developer.amazon.com/en-US/docs/alexa/custom-skills/include-a-card-in-your-skills-response.html#define-a-card-for-use-with-account-linking

用户现在需要重新链接帐户并获取新的访问令牌。

如果需要刷新令牌，请使用授权码授权，而不是隐式授权。

希望这有帮助！