如何使用Ant'输入'任务读取多行值？

value1
value2
value3

 <target name="read-multiline">
   <property name="input.file" location="input.txt"/>
    <loadfile property="input.values" srcfile="${input.file}">
     <filterchain>
       <tokenfilter>
          <linetokenizer/>
        </tokenfilter>
      </filterchain>
    </loadfile>
    <echo message="Input values: ${input.values}"/>
  </target>
</project>

ant read-multiline

read-multiline:
     [echo] Input values: value1
     [echo] value2
     [echo] value3