您好我正在尝试运行一个简单的拓扑结构，该拓扑结构从Twitter发送推文，然后将推文和作者写入文本文件。这是我用于鲸鱼喷水的代码：
SimpleTweetSpout：
public class SimpleTweetFeed extends BaseRichSpout {
private final String accessToken;
private final String accessTokenSecret;
private final String consumerKey;
private final String consumerKeySecret;
private SpoutOutputCollector spoutOutputCollector;
private TwitterStream twitterStream;
private LinkedBlockingQueue<Status>statuses;
private FilterQuery filterQuery;
public SimpleTweetFeed(String accessToken,String accessTokenSecret,String consumerKey,String consumerKeySecret){
if(accessToken==null || accessTokenSecret==null || consumerKey==null || consumerKeySecret==null){
throw new RuntimeException(Twitter4j OAuth Field cannot be null");
}
this.accessToken=accessToken;
this.accessTokenSecret=accessTokenSecret;
this.consumerKey=consumerKey;
this.consumerKeySecret=consumerKeySecret;
}
@Override
public void declareOutputFields(OutputFieldsDeclarer declarer) {
declarer.declare(new Fields("STATUS", "USERNAME"));
}
public void open(Map conf, TopologyContext context, SpoutOutputCollector collector) {
statuses=new LinkedBlockingQueue<Status>();
spoutOutputCollector=collector;
ConfigurationBuilder configurationBuilder=new ConfigurationBuilder();
configurationBuilder.setOAuthAccessToken(accessToken).setOAuthAccessTokenSecret(accessTokenSecret).setOAuthConsumerKey(consumerKey).setOAuthConsumerSecret(consumerKeySecret);
twitterStream = new TwitterStreamFactory(configurationBuilder.build()).getInstance();
twitterStream.addListener(new StatusListener() {
@Override
public void onStatus(Status status) {
statuses.offer(status);
}
@Override
public void onDeletionNotice(StatusDeletionNotice statusDeletionNotice) {
}
@Override
public void onTrackLimitationNotice(int i) {
}
@Override
public void onScrubGeo(long l, long l1) {
}
@Override
public void onStallWarning(StallWarning stallWarning) {
}
@Override
public void onException(Exception e) {
}
});
filterQuery = new FilterQuery();
if (filterQuery == null) {
twitterStream.sample();
} else {
twitterStream.filter(filterQuery);
}
}
@Override
public void nextTuple() {
//emit tweets
Status status=(Status)statuses.poll();
if(status==null){
Utils.sleep(1000);
}else{
spoutOutputCollector.emit(new Values(status,status.getUser().getScreenName()));
}
}
@Override
public void close() {
twitterStream.shutdown();
super.close();
}
}
但是，每当我运行拓扑时，都会引发以下异常：
java.lang.AssertionError: java.lang.reflect.InvocationTargetException
at twitter4j.TwitterFactory.<clinit>(TwitterFactory.java:76) ~[twitter4j-core-3.0.3.jar:3.0.3]
at twitter4j.TwitterStreamFactory.<clinit>(TwitterStreamFactory.java:40) ~[twitter4j-stream-3.0.3.jar:3.0.3]
at storm.starter.spout.TwitterSampleSpout.open(TwitterSampleSpout.java:106) ~[storm-starter-0.9.5.jar:0.9.5]
at backtype.storm.daemon.executor$fn__3371$fn__3386.invoke(executor.clj:522) ~[storm-core-0.9.5.jar:0.9.5]
at backtype.storm.util$async_loop$fn__460.invoke(util.clj:461) ~[storm-core-0.9.5.jar:0.9.5]
at clojure.lang.AFn.run(AFn.java:24) [clojure-1.5.1.jar:na]
at java.lang.Thread.run(Thread.java:745) [na:1.7.0_80]
Caused by: java.lang.reflect.InvocationTargetException: null
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[na:1.7.0_80]
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57) ~[na:1.7.0_80]
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[na:1.7.0_80]
at java.lang.reflect.Constructor.newInstance(Constructor.java:526) ~[na:1.7.0_80]
at twitter4j.TwitterFactory.<clinit>(TwitterFactory.java:70) ~[twitter4j-core-3.0.3.jar:3.0.3]
... 6 common frames omitted
Caused by: java.lang.NoSuchFieldError: factory
at twitter4j.AppEngineTwitterImpl.setFactory(AppEngineTwitterImpl.java:35) ~[twitter4j-appengine-4.0.2.jar:3.0.3]
at twitter4j.TwitterBaseImpl.init(TwitterBaseImpl.java:77) ~[twitter4j-core-3.0.3.jar:3.0.3]
at twitter4j.TwitterBaseImpl.<init>(TwitterBaseImpl.java:54) ~[twitter4j-core-3.0.3.jar:3.0.3]
at twitter4j.TwitterImpl.<init>(TwitterImpl.java:51) ~[twitter4j-core-3.0.3.jar:3.0.3]
at twitter4j.AppEngineTwitterImpl.<init>(AppEngineTwitterImpl.java:30) ~[twitter4j-appengine-4.0.2.jar:3.0.3]
... 11 common frames omitted
9008 [Thread-9-TWITTER_SPOUT] ERROR backtype.storm.daemon.executor -
java.lang.AssertionError: java.lang.reflect.InvocationTargetException
at twitter4j.TwitterFactory.<clinit>(TwitterFactory.java:76) ~[twitter4j- core-3.0.3.jar:3.0.3]
at twitter4j.TwitterStreamFactory.<clinit>(TwitterStreamFactory.java:40) ~[twitter4j-stream-3.0.3.jar:3.0.3]
at storm.starter.spout.TwitterSampleSpout.open(TwitterSampleSpout.java:106) ~[storm-starter-0.9.5.jar:0.9.5]
at backtype.storm.daemon.executor$fn__3371$fn__3386.invoke(executor.clj:522) ~[storm-core-0.9.5.jar:0.9.5]
at backtype.storm.util$async_loop$fn__460.invoke(util.clj:461) ~[storm-core-0.9.5.jar:0.9.5]
at clojure.lang.AFn.run(AFn.java:24) [clojure-1.5.1.jar:na]
at java.lang.Thread.run(Thread.java:745) [na:1.7.0_80]
Caused by: java.lang.reflect.InvocationTargetException: null
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[na:1.7.0_80]
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57) ~[na:1.7.0_80]
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[na:1.7.0_80]
at java.lang.reflect.Constructor.newInstance(Constructor.java:526) ~[na:1.7.0_80]
at twitter4j.TwitterFactory.<clinit>(TwitterFactory.java:70) ~[twitter4j-core-3.0.3.jar:3.0.3]
... 6 common frames omitted
Caused by: java.lang.NoSuchFieldError: factory
at twitter4j.AppEngineTwitterImpl.setFactory(AppEngineTwitterImpl.java:35) ~[twitter4j-appengine-4.0.2.jar:3.0.3]
at twitter4j.TwitterBaseImpl.init(TwitterBaseImpl.java:77) ~[twitter4j-core-3.0.3.jar:3.0.3]
at twitter4j.TwitterBaseImpl.<init>(TwitterBaseImpl.java:54) ~[twitter4j-core-3.0.3.jar:3.0.3]
at twitter4j.TwitterImpl.<init>(TwitterImpl.java:51) ~[twitter4j-core-3.0.3.jar:3.0.3]
at twitter4j.AppEngineTwitterImpl.<init>(AppEngineTwitterImpl.java:30) ~[twitter4j-appengine-4.0.2.jar:3.0.3]
... 11 common frames omitted
9084 [Thread-9-TWITTER_SPOUT] ERROR backtype.storm.util - Halting process: ("Worker died")
java.lang.RuntimeException: ("Worker died")
at backtype.storm.util$exit_process_BANG_.doInvoke(util.clj:325) [storm-core-0.9.5.jar:0.9.5]
at clojure.lang.RestFn.invoke(RestFn.java:423) [clojure-1.5.1.jar:na]
at backtype.storm.daemon.worker$fn__4694$fn__4695.invoke(worker.clj:493) [storm-core-0.9.5.jar:0.9.5]
at backtype.storm.daemon.executor$mk_executor_data$fn__3272$fn__3273.invoke(executor.clj:240) [storm-core-0.9.5.jar:0.9.5]
at backtype.storm.util$async_loop$fn__460.invoke(util.clj:473) [storm-core-0.9.5.jar:0.9.5]
at clojure.lang.AFn.run(AFn.java:24) [clojure-1.5.1.jar:na]
at java.lang.Thread.run(Thread.java:745) [na:1.7.0_80]
有关处理上述例外的任何建议吗？