ant从svn下载
??? <arg value="checkout" />?
?? ??? <arg value="https://svn.com/prod/SRE/source/RuleEngine/testcases/mock_data"/>???
??? <arg value="checkout/mock_data"/>???
?? </exec>??
?? <delete includeemptydirs="true">
?????? <fileset dir="${basedir}/checkout" defaultexcludes="false" includes="**\*.svn\"/>
?? </delete>
??? </target>