Java 是否可以让 Ant 打印出特定目标的类路径？如果是这样，如何？
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Is it possible to have Ant print out the classpath for a particular target? If so, how?
提问by Daryl Spitzer
I'm trying to get a target to build that has quite a long list of <pathelement location="${xxx}"/>and <path refid="foo.class.path"/>elements in its <path id="bar.class.path">element (in the build.xml file). I keep getting "package com.somecompany.somepackage does not exist" errors, and I'm having a hard time chasing down these packages and making sure I've synced them from our repository.
我正在尝试构建一个目标，该目标在其元素（在 build.xml 文件中）中有很长的<pathelement location="${xxx}"/>和<path refid="foo.class.path"/>元素列表<path id="bar.class.path">。我不断收到“包 com.somecompany.somepackage 不存在”错误，而且我很难找到这些包并确保我已经从我们的存储库中同步了它们。
I'm new to this team so I'm unfamiliar with the build, but I would prefer to figure this out myself if possible (so I don't bother the other very busy team members). I have very limited experience with Ant.
我是这个团队的新手，所以我不熟悉构建，但如果可能的话，我更愿意自己解决这个问题（所以我不会打扰其他非常忙碌的团队成员）。我对 Ant 的经验非常有限。
I think it would save me quite a bit of time if I could have Ant print out the classpath for the target I'm trying to build.
我认为如果我可以让 Ant 打印出我正在尝试构建的目标的类路径，这将为我节省相当多的时间。
采纳答案by karoberts
Use the pathconverttask to convert a path to a property
使用pathconvert任务将路径转换为属性
<path id="classpath">
....
</path>
<pathconvert property="classpathProp" refid="classpath"/>
<echo>Classpath is ${classpathProp}</echo>
回答by iain
This is even easier with versions of Ant > 1.6
对于 Ant > 1.6 的版本，这更容易
<echo>${toString:classpath}</echo>
See http://ant.apache.org/manual/using.html#pathshortcutfor more information
有关更多信息，请参阅http://ant.apache.org/manual/using.html#pathshortcut
