使用 twitter4j 提取特定主题标签的推文

Question

我可以使用 search 方法提取特定主题标签的推文，如下所示

        twitter4j.Twitter twitter =  TwitterFactory.getSingleton();
        Query query = new Query("ipl7");
        QueryResult result = twitter.search(query);
        for (Status status : result.getTweets()) {
            System.out.println("@" + status.getUser().getScreenName() + " : " + status.getText() + " : " + status.getGeoLocation());
        }

但是，我使用上述方法获得的推文数量非常有限。我应该改变什么来获取特定主题标签的所有推文？

Answer 1

您可以使用流式 API 通过一组给定的关键字获取最近的推文。在您的情况下，您只有一个关键字是标签，对吗？我发布了一个简短的示例代码，通过 Streaming API 的关键字搜索推文。您可以将 Streaming 和 Search API 用于不同的目的。大多数情况下，您可以在有限的时间内将 Search API 用于主机推文。它允许您给出日期间隔。但是，您可以使用 Streamin API 将最近发布的推文捕获为包含您提供的关键字的推文流。

以下示例代码：

private static void GetTweetStreamForKeywords()
        {
        TwitterStream twitterStream = new TwitterStreamFactory(config).getInstance();

        StatusListener statusListener = new StatusListener() {

         @Override
         public void onStatus(Status status) {
           // The main section that you get the tweet. You can access it by status object.
           // You can save it in a database table.
         }


                @Override
                public void onDeletionNotice(StatusDeletionNotice sdn) {
                    throw new UnsupportedOperationException("Not supported yet."); 
                }

                @Override
                public void onTrackLimitationNotice(int i) {
                    throw new UnsupportedOperationException("Not supported yet."); 
                }

                @Override
                public void onScrubGeo(long l, long l1) {
                    throw new UnsupportedOperationException("Not supported yet."); 
                }

                @Override
                public void onStallWarning(StallWarning sw) {
                    throw new UnsupportedOperationException("Not supported yet.");
                }

                @Override
                public void onException(Exception ex) {
                    logWriter.WriteErrorLog(ex, "onException()");
                }
            };

            FilterQuery fq = new FilterQuery();        

            String keywords[] = {"sport", "politics", "health"};

            fq.track(keywords);        

            twitterStream.addListener(statusListener);
            twitterStream.filter(fq);          
      }  

Answer 2

package twiter;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.List;
import twitter4j.GeoLocation;
import twitter4j.Query;
import twitter4j.QueryResult;
import twitter4j.Status;
import twitter4j.Twitter;
import twitter4j.TwitterException;
import twitter4j.TwitterFactory;
import twitter4j.conf.ConfigurationBuilder;

public class tweets
{
  public static void main(String[] args) throws Exception 
  {

    ConfigurationBuilder cb = new ConfigurationBuilder();
    cb.setDebugEnabled(true)
      .setOAuthConsumerKey("")
      .setOAuthConsumerSecret("")
      .setOAuthAccessToken("")
      .setOAuthAccessTokenSecret("");
    Twitter twitter = new TwitterFactory(cb.build()).getInstance();
    Query query = new Query("#world");
    int numberOfTweets = 5000;
    long lastID = Long.MAX_VALUE;
    ArrayList<Status> tweets = new ArrayList<Status>();
    while (tweets.size () < numberOfTweets) {
      if (numberOfTweets - tweets.size() > 100)
        query.setCount(100);
      else 
        query.setCount(numberOfTweets - tweets.size());
      try {
        QueryResult result = twitter.search(query);
        tweets.addAll(result.getTweets());
        System.out.println("Gathered " + tweets.size() + " tweets"+"\n");
        for (Status t: tweets) 
          if(t.getId() < lastID) 
              lastID = t.getId();

      }

      catch (TwitterException te) {
        System.out.println("Couldn't connect: " + te);
      }; 
      query.setMaxId(lastID-1);
    }

    for (int i = 0; i < tweets.size(); i++) {
      Status t = (Status) tweets.get(i);

     // GeoLocation loc = t.getGeoLocation();

      String user = t.getUser().getScreenName();
      String msg = t.getText();
      //String time = "";
      //if (loc!=null) {
        //Double lat = t.getGeoLocation().getLatitude();
        //Double lon = t.getGeoLocation().getLongitude();*/
       System.out. println(i + " USER: " + user + " wrote: " + msg + "\n");
      } 
      //else 
        //System.out.println(i + " USER: " + user + " wrote: " + msg+"\n");
    }
  }

Answer 3

使用count(int resultCount) 方法：

    Query query = new Query("ipl7");
    query.count(100); //100 is the max allowed
    QueryResult result = twitter.search(query);