Java – how to perform ant path mapping in the ‘War’ task?

I have several jar file schema sets, such as

<patternset id="common.jars">
 <include name="external/castor-1.1.jar" />
 <include name="external/commons-logging-1.2.6.jar" />
 <include name="external/itext-2.0.4.jar" />
     ...
</patternset>

I also have a 'War' task that contains the Lib element:

<lib dir="${src.dir}/jars">
  <patternset refid="common.jars"/>
  <patternset refid="web.jars"/>
     ...
</lib>

However, in this way, the WEB-INF / lib I finally get contains the subdirectories in my schema:

WEB-INF/lib/external/castor-1.1.jar
WEB-INF/lib/external/...

Is there any way to flatten this, so the jar file appears at the top level under WEB-INF / lib, no matter what the directory specified in the pattern is? I looked at mapper, but it seems that you can't use them in lib

Solution

You can try using the mappedresources element (ant 1.8)

<mappedresources>
  <!-- Fileset here -->
  <globmapper from="external/*.jar" to="*.jar"/>
</mappedresources>

http://ant.apache.org/manual/Types/resources.html#mappedresources

If you have a typical web project, it's best to split the web application library and general library into different folders, and make WEB-INF / lib contain only those needed at runtime In this way, you can avoid conflicts and your project will be clearer to other developers