Twitter4J throws exception in TwitterFactory
- by Philipp Andre
Hello Guys,
i'm trying to access twitter via oauth. Therefore, i registered my app, downloaded Twitter4j, added the jars in my Eclipse-Project, and then tried to execute the following code:
Twitter twitter = new TwitterFactory().getOAuthAuthorizedInstance("[key]","[secretKey]);
RequestToken requestToken = twitter.getOAuthRequestToken();
System.out.println(requestToken.getAuthorizationURL());
But it raises the following exception:
[Sat May 29 11:19:11 CEST 2010]Using class twitter4j.internal.logging.StdOutLoggerFactory as logging factory.
[Sat May 29 11:19:11 CEST 2010]Use twitter4j.internal.http.alternative.HttpClientImpl as HttpClient implementation.
Exception in thread "main" java.lang.AssertionError: java.lang.reflect.InvocationTargetException
at twitter4j.internal.http.HttpClientFactory.getInstance(HttpClientFactory.java:71)
at twitter4j.internal.http.HttpClientWrapper.<init>(HttpClientWrapper.java:59)
at twitter4j.http.OAuthAuthorization.init(OAuthAuthorization.java:83)
at twitter4j.http.OAuthAuthorization.<init>(OAuthAuthorization.java:74)
at twitter4j.TwitterFactory.getOAuthAuthorizedInstance(TwitterFactory.java:112)
at MainProgram.main(MainProgram.java:18)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at twitter4j.internal.http.HttpClientFactory.getInstance(HttpClientFactory.java:65)
... 5 more
Caused by: java.lang.NoClassDefFoundError: org/apache/http/impl/client/DefaultHttpClient
at twitter4j.internal.http.alternative.HttpClientImpl.<init>(HttpClientImpl.java:63)
... 10 more
I currently can't figure out why ... can you please give me some suggestions?
Best regards
Philipp
