Question

确定。每次我们只收到100条推文。我想在地图上显示地理位置。有什么方法可以得到100条推文，所有这些推文都有Geolocation。因为现在只有3-4个人有地理定位。

我用FilterQuery阅读了一些例子，但是处理系统会向我抛出一个错误，如未知。

Answer 1

这是一个工作示例。这是使用twitter4j 4.0.2进行测试的

接口StatusListener是你可以用你的推文做任何你想做的事......那是他们到达的

使用流API：

import twitter4j.util.*;
import twitter4j.*;
import twitter4j.management.*;
import twitter4j.api.*;
import twitter4j.conf.*;
import twitter4j.json.*;
import twitter4j.auth.*;


TwitterStream twitterStream;


double[][] boundingBox= {
  {
    -180, -90
  }
  , {
    180, 90
  }
}; /// whole world;

void setup() {     
  size(100, 100);    
  background(0); 
  openTwitterStream();
}  


void draw() {     
  background(0);
}  



// Stream it
void openTwitterStream() {  

  ConfigurationBuilder cb = new ConfigurationBuilder();
  cb.setOAuthConsumerKey(FILL_IN);
  cb.setOAuthConsumerSecret(FILL_IN);
  cb.setOAuthAccessToken(FILL_IN);
  cb.setOAuthAccessTokenSecret(FILL_IN);


  TwitterStream twitterStream = new TwitterStreamFactory(cb.build()).getInstance();
  twitterStream.addListener(listener);

  FilterQuery filter = new FilterQuery();
  filter.locations(boundingBox);


  twitterStream.filter(filter);

  println("connected");
} 


// Implementing StatusListener interface
StatusListener listener = new StatusListener() {

  //@Override
  public void onStatus(Status status) {
    GeoLocation loc = status.getGeoLocation();
    System.out.println("@" + status.getUser().getScreenName() + " - " + loc);
  }

  //@Override
  public void onDeletionNotice(StatusDeletionNotice statusDeletionNotice) {
    System.out.println("Got a status deletion notice id:" + statusDeletionNotice.getStatusId());
  }

  //@Override
  public void onTrackLimitationNotice(int numberOfLimitedStatuses) {
    System.out.println("Got track limitation notice:" + numberOfLimitedStatuses);
  }

  //@Override
  public void onScrubGeo(long userId, long upToStatusId) {
    System.out.println("Got scrub_geo event userId:" + userId + " upToStatusId:" + upToStatusId);
  }

  //@Override
  public void onStallWarning(StallWarning warning) {
    System.out.println("Got stall warning:" + warning);
  }

  //@Override
  public void onException(Exception ex) {
    ex.printStackTrace();
  }
};

Answer 2

import twitter4j.conf.*;
import twitter4j.*;
import twitter4j.auth.*;
import twitter4j.api.*;
//import twitter4j.FilterQuery;
import java.util.*;


Twitter twitter;
String searchString = "shopping";


Query query; 


ArrayList tweets,tweets2;

void setup()
{
  frameRate(0.2);
  tweets = new ArrayList();

  ConfigurationBuilder cb = new ConfigurationBuilder();
  cb.setOAuthConsumerKey("*");
  cb.setOAuthConsumerSecret("*");
  cb.setOAuthAccessToken("*");
  cb.setOAuthAccessTokenSecret("*");

  twitter = new TwitterFactory(cb.build()).getInstance();
  query = new Query(searchString);
  getNewTweets();
}

void draw()
{


  try{

    if (current >= tweets.size()) //if u read all the received tweets make a new query 
    {  
       tweets.clear();
       tweets2.clear();
      getNewTweets();
        current = 0;
    }



      Status currentTweet = (Status) tweets.get(current);
      GeoLocation loc = currentTweet.getGeoLocation();
      User currentUser=(User) currentTweet.getUser(); //Get User info



        double latitude = currentTweet.getGeoLocation().getLatitude();
        double longitude = currentTweet.getGeoLocation().getLongitude();


        println( "Longtitude: "+longitude);
        println( "Latitude:  "+latitude);




        String user = currentUser.getScreenName();
        String msg = currentTweet.getText();

        println( "User: "+user);
        println("Message: "+ msg);



}

 catch (Exception te) {
      println(te);
  }




   }

   void getNewTweets()
{


    try 
    {


//     FilterQuery filtro = new FilterQuery();
   /* filtro.locations(boundingBox);
    twitter.addListener(listener);
    twitter.filter(filtro);
      */


    query.setCount(100); //sets the number of tweets to return per page
    QueryResult result = twitter.search(query); 
    tweets2 = (ArrayList) result.getTweets(); 

    for (int i = 0; i < tweets2.size(); i++) { 
     Status currentTweet = (Status) tweets2.get(i);
     GeoLocation loc = currentTweet.getGeoLocation();

      if(loc!=null){ //add to list only tweets with geo location
        tweets.add(tweets2.get(i));         
       }

    }
    } 
    catch (TwitterException te) 
    {
        System.out.println("Failed to search tweets: " + te.getMessage());
        System.exit(-1);
    } 
}

Answer 3

不是答案，而是简单的解决方法：

我知道大多数人在发推文时都没有启用GPS，而其他人则不愿意分享他们的位置！

但他们仍在分享他们的位置！猜猜怎么样？在他们的个人资料他们的家乡，他们的国家大多是可见的，它可以给你一个大致位置的推文来自哪里！您可以使用Rest API

查询用户的个人资料，从而查询他/她的位置

twitter.showUser(userScreenName).getLocation();

Answer 4

我认为如果你在搜索之前设置了Geocode，那么大部分结果将具有Geolocation（最多90％）。但我不知道为什么不是整个结果与地理位置。也许它会有所帮助？

   GeoLocation obj = new GeoLocation(35.8007019, -97.3383211);
   query.setGeoCode(obj, 2000, Unit.valueOf("km"));
   result = twitter.search(query);

仅使用Geolocation处理twitter4j查询

4 个答案: