你可以使用 pathconvert 任务要做到这一点， setonempty 属性。请参阅此示例一个用例。

 < pathconvert refid =myfileset
 property =fileset.notempty
 setonempty =false/> 
 

将只设置属性 fileset.notempty 如果这些refid的文件集是 myfileset 不是空的。

你只需要定义 myfileset 与您的目录，没有排除确定获取目录空测试：

 < fileset dir =foo / barid =myfileset/> 
 

How can one test to see that a directory is empty in ant?

You can use the pathconvert task to do that, with the setonempty property. See this example for an use case.

<pathconvert refid="myfileset"
             property="fileset.notempty"
             setonempty="false"/>

will set the property fileset.notempty only if the fileset those refid is myfileset is not empty.

You just have to define myfileset with your directory, and no excludes do get a directory empty test:

<fileset dir="foo/bar" id="myfileset"/>