Twitter4j Sample Stream Example - Java Social Media

Java examples for Social Media:Twitter

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Description

Twitter4j Sample Stream Example

Demo Code

package examples;

import com.google.common.collect.Lists;
import com.twitter.hbc.ClientBuilder;
import com.twitter.hbc.core.Constants;
import com.twitter.hbc.core.endpoint.StatusesSampleEndpoint;
import com.twitter.hbc.core.processor.StringDelimitedProcessor;
import com.twitter.hbc.httpclient.BasicClient;
import com.twitter.hbc.httpclient.auth.Authentication;
import com.twitter.hbc.httpclient.auth.OAuth1;
import com.twitter.hbc.twitter4j.Twitter4jStatusClient;
import twitter4j.StallWarning;
import twitter4j.Status;
import twitter4j.StatusDeletionNotice;
import twitter4j.StatusListener;

import java.util.concurrent.BlockingQueue;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.LinkedBlockingQueue;

public class Twitter4jSampleStreamExample {
    // A bare bones listener
    private StatusListener listener1 = new StatusListener() {
        @Override/*  w  w  w .j  ava  2s.co  m*/
        public void onStatus(Status status) {
            if (status.getLang().equals("it"))
                System.out.println("@" + status.getUser().getScreenName()
                        + " - " + status.getText());
        }

        @Override
        public void onDeletionNotice(
                StatusDeletionNotice statusDeletionNotice) {
        }

        @Override
        public void onTrackLimitationNotice(int limit) {
        }

        @Override
        public void onScrubGeo(long user, long upToStatus) {
        }

        @Override
        public void onStallWarning(StallWarning warning) {
        }

        @Override
        public void onException(Exception e) {
        }
    };

    public void oauth(String consumerKey, String consumerSecret,
            String token, String secret) throws InterruptedException {
        // Create an appropriately sized blocking queue
        BlockingQueue<String> queue = new LinkedBlockingQueue<String>(10000);

        // Define our endpoint: By default, delimited=length is set (we need this for our processor)
        // and stall warnings are on.
        StatusesSampleEndpoint endpoint = new StatusesSampleEndpoint();

        Authentication auth = new OAuth1(consumerKey, consumerSecret,
                token, secret);
        // Authentication auth = new BasicAuth(username, password);

        // Create a new BasicClient. By default gzip is enabled.
        BasicClient client = new ClientBuilder()
                .hosts(Constants.STREAM_HOST).endpoint(endpoint)
                .authentication(auth)
                .processor(new StringDelimitedProcessor(queue)).build();

        // Create an executor service which will spawn threads to do the actual work of parsing the incoming messages and
        // calling the listeners on each message
        int numProcessingThreads = 4;
        ExecutorService service = Executors
                .newFixedThreadPool(numProcessingThreads);

        // Wrap our BasicClient with the twitter4j client
        Twitter4jStatusClient t4jClient = new Twitter4jStatusClient(client,
                queue, Lists.newArrayList(listener1), service);

        // Establish a connection
        t4jClient.connect();
        for (int threads = 0; threads < numProcessingThreads; threads++) {
            // This must be called once per processing thread
            t4jClient.process();
        }
    }

    public static void main(String args[]) {

        String consumerKey = "";
        String consumerSecret = "";
        String token = "";
        String secret = "";

        Twitter4jSampleStreamExample ex = new Twitter4jSampleStreamExample();

        try {
            ex.oauth(consumerKey, consumerSecret, token, secret);

        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }
}

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