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[英]Can't get a stream of Tweets using Twitter Streaming API on Spark
[英]How to get location based tweets using Spring social with Twitter Streaming API?
我需要根據地理位置對推文進行直播。 通過Twitter API文檔我知道我們可以基於geolocaion進行搜索。
但是有可能根據地理位置進行流式傳輸嗎? 我使用spring social twitter進行API集成。
List<StreamListener> listeners = new ArrayList<StreamListener>();
StreamListener streamListener = new StreamListener() {
@Override
public void onWarning(StreamWarningEvent warningEvent) {}
@Override
public void onTweet(Tweet tweet) {}
@Override
public void onLimit(int numberOfLimitedTweets) {}
@Override
public void onDelete(StreamDeleteEvent deleteEvent) {}
};
listeners.add(streamListener);
//to-do geolocation based stream filter
twitter.streamingOperations().filter("tesla", listeners);
Thread.sleep(10000);
我看到Twitter流API也有一個請求的位置參數。 但是我如何使用Spring Social Twitter實現它。
謝謝
我一直在嘗試這個,最后得到了流媒體推文。 我繼續學習本教程 - https://spring.io/guides/gs/accessing-twitter 。
訪問http:// localhost:8080 / stream / 10_000將在舊金山地區(現在硬編碼)流式傳輸推文10秒,並在10秒后在網頁中顯示這些推文。
在Controller類中添加一個類似這樣的@RequestMapping方法: HelloController.java
@RequestMapping("/stream/{time}")
public String streamTweet(@PathVariable int time, Model model) throws InterruptedException{
if (connectionRepository.findPrimaryConnection(Twitter.class) == null) {
return "redirect:/connect/twitter";
}
Model returnedmodel = streamService.streamApi(model, time);
model = returnedmodel;
return "stream";
}
StreamService.java
@Service
public class StreamService {
private final Logger log = LoggerFactory.getLogger(StreamService.class);
@Autowired
private Twitter twitter;
public Model streamApi(Model model, int time) throws InterruptedException{
List<Tweet> tweets = new ArrayList<>();
List<StreamListener> listeners = new ArrayList<StreamListener>();
StreamListener streamListener = new StreamListener() {
@Override
public void onWarning(StreamWarningEvent warningEvent) {
// TODO Auto-generated method stub
}
@Override
public void onTweet(Tweet tweet) {
System.out.println(tweet.getUser().getName() + " : " + tweet.getText());
log.info("User '{}', Tweeted : {}", tweet.getUser().getName() , tweet.getText());
tweets.add(tweet);
model.addAttribute("tweets", tweets);
}
@Override
public void onLimit(int numberOfLimitedTweets) {
// TODO Auto-generated method stub
}
@Override
public void onDelete(StreamDeleteEvent deleteEvent) {
// TODO Auto-generated method stub
}
};
listeners.add(streamListener);
//This sets the GeoCode (-122.75,36.8,-121.75,37.8) of San Francisco(South-West and North-East) region as given in below twitter docs
//https://dev.twitter.com/streaming/overview/request-parameters#locations
Float west=-122.75f;
Float south=36.8f;
Float east=-121.75f;
Float north = 37.8f;
FilterStreamParameters filterStreamParameters = new FilterStreamParameters();
filterStreamParameters.addLocation(west, south, east, north);
Stream userStream = twitter.streamingOperations().filter(filterStreamParameters, listeners);
Thread.sleep(time);
userStream.close();
return model;
}
}
stream.html
<html>
<head>
<title>Hello Twitter Stream</title>
</head>
<body>
<h4>The Twitter Stream:</h4>`enter code here`
<ul>
<li th:each="tweet:${tweets}"
th:text="${tweet.text} + ' tweeted by - ' + ${tweet.user.name}
+ ' from ' + ${tweet.user.location}
+ ' @ ' + ${tweet.createdAt}">
Tweet
</li>
</ul>
</body>
</html>
PS:我知道你不想做這樣的事情(即在等待X秒之后顯示推文,我只是這樣做才能使這個工作)
順便說一句,如果您有任何想法我如何使用此流來實時顯示推文(使用或不使用websockets)請分享。 謝謝。
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