Introducing Spring Framework

Chapter 17 ■ Be Social and Go Mobile
In Listing 17-1, you need to add the four keys you created when you registered your Twitter application and when
you generated your access token keys. These keys are needed in order to have a secure way to communicate between
your application and Twitter’s REST API. Next, you need to create the XML configuration for your My Documents
Spring application, as shown in Listing 17-2.
Listing 17-2. mydocuments-context.xml
Listing 17-2 shows the XML configuration that the Spring container will use in order to create the instances of
your beans. First, you are creating a reference to the twitter.properties file. This reference will be a placeholder
for your properties keys and their values. Then you are creating a “tweet” bean. This bean has a reference to the
org.springframework.social.twitter.api.impl.TwitterTemplate class. This class has a constructor with four
parameters: the consumerKey, the consumerSecret, the accessToken, and the accessTokenSecret. The values of these
parameters will be the corresponding values of the placeholders you set (and that will match all the properties from
the twitter.properties file).
Next, you are going to create the class that will use the TwitterTemplate bean, the DocumentTweet class (shown
in Listing 17-3).
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