Ant: copy the same fileset to multiple places

问题

I need an Ant script that will copy one folder to several other places. As a good obedient programmer, I want not to repeat myself. Is there any way of taking a fileset like this:

<copy todir="${target}/path/to/target/1">
    <fileset dir="${src}">
        <exclude name='**/*svn' />
    </fileset>
</copy>

And storing the fileset in a variable so it can be re-used?

回答1:

Declare an id attribute on the fileset and then reference it in each copy task.

For example:

<project name="foo">
  <fileset id="myFileSet" dir="${src}">
    <exclude name='**/*svn' />
  </fileset>
  ...
  <target name="copy1">
    <copy todir="${target}/path/to/target/1">
      <fileset refid="myFileSet"/>
    </copy>
  </target>
  <target name="copy2">
    <copy todir="${target}/path/to/target/2">
      <fileset refid="myFileSet"/>
    </copy>
  </target>
</project>

回答2:

Rich's answer is probably better for your specific problem, but the generic way of reusing code in Ant is a <macrodef>.

<macrodef name="copythings">
  <attribute name="todir"/>
  <sequential>
    <copy todir="@{todir}">
      <fileset dir="${src}">
        <exclude name='**/*svn' />
      </fileset>
    </copy>
  </sequential>
</macrodef>

<copythings todir="/path/to/target1"/>
<copythings todir="/path/to/target2"/>

回答3:

Upvoted first answer already, but you can also use a mapper to copy to multiple destinations.

来源：https://stackoverflow.com/questions/1164631/ant-copy-the-same-fileset-to-multiple-places