java - Twitter4j - 超出速率限制

Question

我想在 Twitter4j 中使用 getFollowersIds() 获得关注者，但我得到了

ConnectionErrorException ... rate limit exceeded

public static void main(String[] args) {
        try {
            Twitter twitter = TwitterFactory.getSingleton();
            String[] srch = new String[]{"TechCrunch"};
            ResponseList<User> users = twitter.lookupUsers(srch);
            for (User user : users) {

                UserHarvest us = new UserHarvest(6017542);
                us.getFollowersIds();
                try {
                    us.getContributors();
                } catch (ConnectionErrorException ex) {
                    Logger.getLogger(UserHarvest.class.getName()).log(Level.SEVERE, null, ex);
                }
            }
        } catch (TwitterException ex) {
            Logger.getLogger(UserHarvest.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

错误信息:

Exception in thread "main" harvest.twitterharvest.ConnectionErrorException: Connection could not have been established
    at harvest.twitterharvest.WrapperTwitter4J.getFollowersIDs(WrapperTwitter4J.java:75)
    at harvest.twitterharvest.UserHarvest.getFollowersIds(UserHarvest.java:106)
    at harvest.twitterharvest.UserHarvest.main(UserHarvest.java:140)
Caused by: 429:Returned in API v1.1 when a request cannot be served due to the application's rate limit having been exhausted for the resource. See Rate Limiting in API v1.1.(https://dev.twitter.com/docs/rate-limiting/1.1)
message - Rate limit exceeded
code - 88

Relevant discussions can be found on the Internet at:
    http://www.google.co.jp/search?q=92c30ec6 or
    http://www.google.co.jp/search?q=19e1da11
TwitterException{exceptionCode=[92c30ec6-19e1da11], statusCode=429, message=Rate limit exceeded, code=88, retryAfter=-1, rateLimitStatus=RateLimitStatusJSONImpl{remaining=0, limit=15, resetTimeInSeconds=1384512813, secondsUntilReset=904}, version=3.0.4}
    at twitter4j.internal.http.HttpClientImpl.request(HttpClientImpl.java:162)
    at twitter4j.internal.http.HttpClientWrapper.request(HttpClientWrapper.java:61)
    at twitter4j.internal.http.HttpClientWrapper.get(HttpClientWrapper.java:89)
    at twitter4j.TwitterImpl.get(TwitterImpl.java:1894)
    at twitter4j.TwitterImpl.getFollowersIDs(TwitterImpl.java:409)
    at harvest.twitterharvest.WrapperTwitter4J.getFollowersIDs(WrapperTwitter4J.java:73)
    ... 2 more

我看到 secondsUntilReset=904。我在 1 小时后运行代码并收到相同的错误消息。我不知道为什么。感谢您的帮助。

Answer 1

Twitter API 中存在速率限制。您每 15 分钟调用给定 Twitter API 端点的次数不能超过给定次数(无论是否代表经过身份验证的用户)。

发生在你身上的是你的代码一定很快达到了速率限制(the endpoint to retrieve followers IDs 对于给定的经过身份验证的用户，每 15 分钟被限制为 15 次调用)所以你必须等待(904 秒)才能再次尝试.

请注意您正在调用(通过 Twitter4J)的 Twitter API 端点，以节省您的 API 调用，从而避免达到速率限制。

有关更多信息，请查看 Twitter Developers 上的那些资源, 特别是在 its documentation :

• REST API Rate Limiting in v1.1 (关于 Twitter API 中速率限制的一般主题)
• REST API v1.1 Limits per window by resource (每个端点的速率限制)
• Error Codes and Responses (向您解释您的“88”响应代码是什么)。