Trying to integrate my webapp with Twitter using twitter4j lib.
I have registered my app on twitter site and got Consumer key
and Consumer secret
values.
Nothing special,standard OAuth
step.
code:
public class TwitterService {
private final String CONSUMER_KEY = "xxx";
private final String CONSUMER_SECRET = "yyy";
public String fav() {
Twitter twitter = TwitterFactory.getSingleton();
twitter.setOAuthConsumer(CONSUMER_KEY, CONSUMER_SECRET);
...
exception:
Caused by: java.lang.IllegalStateException: consumer key/secret pair already set.
I have no more configuration for key
and secret
,any .properties
or other file.
EDIT:
commenting line twitter.setOAuthConsumer(CONSUMER_KEY, CONSUMER_SECRET);
causes exception:
java.lang.IllegalStateException: OAuth consumer key/secret combination not supplied
Looking at both the code and documentation, it looks like your method of instantiating a Twitter
instance is not recommended. If you want to supply configuration programmatically (and not use properties), it looks like you need to supply a Configuration
to the TwitterFactory
.
...
ConfigurationBuilder builder = new ConfigurationBuilder();
builder.setOAuthConsumerKey(CONSUMER_KEY);
builder.setOAuthConsumerSecret(CONSUMER_SECRET);
Configuration configuration = builder.build();
TwitterFactory factory = new TwitterFactory(configuration);
Twitter twitter = factory.getInstance();
...
The singleton provided by a factory that hasn't been supplied with a configuration defaults to using an Authorization
implementation backed by a PropertyConfiguration
configuration. If there is no properties file, it looks like it shouldn't instantiate an OAuthAuthorization
auth, which is what would cause the exception you're seeing. But PropertyConfiguration
does search the entire CLASSPATH
for an appropriate properties file, so maybe you overlooked one. You could try logging the key and secret right after getting the Twitter
instance to see what they are set to:
System.out.println("key:" + twitter.getConfiguration().getOAuthConsumerKey());
System.out.println("secret: " + twitter.getConfiguration().getOAuthConsumerSecret());
My hunch is that you're setting the private final variables and then twitter.setOAuthConsumer() is trying to do the same. You should only need one or the other. Have you tried commenting out the twitter.setOAuthConsumer() line?
The Docs explain the 'preferred' way to do set these.