Just an example, should work:
<data-sources>
<data-source type="org.apache.commons.dbcp.BasicDataSource">
<set-property property="driverClassName" value="com.mysql.jdbc.Driver" />
<set-property property="url" value="jdbc:mysql://localhost:3306/testDB" />
<set-property property="username" value="testuser"/>
<set-property property="password" value="testPW" />
</data-source>
</data-sources>
Maybe this would help, too:
http://struts.apache.org/faqs/database.html Klaus