deploy Weblogic application with Ant

...
<taskdef name="wldeploy" classname="weblogic.ant.taskdefs.management.WLDeploy" classpath="${wls.home}\server\lib\weblogic.jar"/>
<wldeploy action="deploy" name="${appName}" targets="${serverName}" source="xx.ear" user="${wls.deploy.username}" password="${wls.deploy.password}" verbose="true" upload="true" />  
...

FYI: Ant Script to start server and deploy application