如何从 Twitter 流中获取样本并打印到屏幕 [英] How to get sample from twitter stream and print to screen

问题描述

我正在尝试使用 twitter4j 库从 Twitter 流中获取随机样本并打印推文的用户名和文本.

I'm trying to use the twitter4j library to get a random sample from the twitter stream and print the username and text of the tweet.

就 OAuth 而言，我不确定我是否理解正确的术语.这是我需要为我的帐户获取的内容还是仅在访问其他私人帐户时才需要?

I'm not sure I understand the correct terminology as far as OAuth goes. Is this something I need to get for my account or only if accessing other private accounts?

这是我的代码:

package tweet1;

import java.io.IOException;

import twitter4j.Status;
import twitter4j.StatusDeletionNotice;
import twitter4j.StatusListener;
import twitter4j.TwitterException;
import twitter4j.TwitterStream;
import twitter4j.TwitterStreamFactory;
import twitter4j.auth.BasicAuthorization;

public class Twit4jEx1 {

    /**
     * @param args
     */
        // TODO Auto-generated method stub
        public static void main(String[] args) throws TwitterException, IOException{
//          BasicAuthorization ba1 = new BasicAuthorization("userName", "pword");
            ConfigurationBuilder cb = new ConfigurationBuilder();

            StatusListener listener = new StatusListener(){
                public void onStatus(Status status) {
                    System.out.println(status.getUser().getName() + " : " + status.getText());
                }
                public void onDeletionNotice(StatusDeletionNotice statusDeletionNotice) {}
                public void onTrackLimitationNotice(int numberOfLimitedStatuses) {}
                public void onException(Exception ex) {
                    ex.printStackTrace();
                }
                @Override
                public void onScrubGeo(long arg0, long arg1) {
                    // TODO Auto-generated method stub

                }
            };
            TwitterStream twitterStream = new TwitterStreamFactory().getInstance();
            // sample() method internally creates a thread which manipulates TwitterStream and calls these adequate listener methods continuously.
            twitterStream.sample();
        }   
}

ConfigurationBuilder 类

ConfigurationBuilder class

package tweet1;

import twitter4j.Twitter;
import twitter4j.TwitterFactory;
//import twitter4j.conf.ConfigurationBuilder;

public class ConfigurationBuilder {
    ConfigurationBuilder cb = new ConfigurationBuilder();
    cb.setDebugEnabled(true)
      .setOAuthConsumerKey("***")
      .setOAuthConsumerSecret("***")
      .setOAuthAccessToken("***")
      .setOAuthAccessTokenSecret("***");
    TwitterFactory tf = new TwitterFactory(cb.build());
    Twitter twitter = tf.getInstance();
}

当我运行 Twit4jEx1 时，我得到以下信息:

When I run Twit4jEx1 I get the following:

Exception in thread "main" java.lang.Error: Unresolved compilation problems: 
    Syntax error on token(s), misplaced construct(s)
    Syntax error on token "setDebugEnabled", = expected after this token

    at tweet1.ConfigurationBuilder.<init>(ConfigurationBuilder.java:9)
    at tweet1.Twit4jEx1.main(Twit4jEx1.java:21)

有什么建议吗?

推荐答案

您的 ConfigurationBuilder 类正在尝试在初始化块中而不是在构造函数或方法中运行代码.

You class ConfigurationBuilder is trying to run code in an initialization block instead of in a constructor or method.

我认为你的意思是:

public class MyConfigurationBuilder {
    private ConfigurationBuilder cb; 
    private Twitter twitter;

    public MyConfigurationBuilder() {
      cb = new ConfigurationBuilder();
      cb.setDebugEnabled(true)
        .setOAuthConsumerKey("***")
        .setOAuthConsumerSecret("***")
        .setOAuthAccessToken("***")
        .setOAuthAccessTokenSecret("***");
      TwitterFactory tf = new TwitterFactory(cb.build());
      twitter = tf.getInstance();
    }
}

然后你可以添加适当的 getter 或其他东西.确保在主函数中使用 MyConfigurationBuilder.

And then you can add appropriate getters or something. Make sure you use MyConfigurationBuilder in your main funciton.

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