[英]read property value in Ant
I need to read the value of a property from a file in an Ant script and strip off the first few characters. 我需要从Ant脚本中的文件中读取属性的值,并删除前几个字符。 The property in question is
有问题的财产是
path=file:C:/tmp/templates
This property is store in a file that I can access within the ant script via 此属性存储在我可以在ant脚本中访问的文件中
<property file="${web.inf.dir}/config.properties"/>
I have two questions: 我有两个问题:
Ultimately, I'd like to have access to the following name-value pair within the Ant script: 最后,我想在Ant脚本中访问以下名称 - 值对:
path=C:/tmp/templates
Cheers, Don 干杯,唐
How about just changing the properties file so you can access both the full and simple path? 如何更改属性文件,以便您可以访问完整和简单的路径?
path=C:/tmp/templates
fullpath=file:${path}
In Ant 1.6 or later you can use LoadProperties
with a nested FilterChain
在Ant 1.6或更高版本中,您可以将
LoadProperties
与嵌套的FilterChain
<loadproperties srcFile="${property.file.name}">
<filterchain>
<tokenfilter>
<containsstring contains="path=file:"/>
<replaceregex pattern="path=file:" replace="path=" flags=""/>
</tokenfilter>
</filterchain>
</loadproperties>
This should result in a path
property being loaded with the string "file:" stripped. 这应该导致
path
属性加载字符串“file:”被剥离。
Not tested, caveat emptor... 未经测试,请注意......
我使用Ant Contrib的propertyregex任务来做类似的事情。
You could probably use ant's exec task and a system command. 您可以使用ant的exec任务和系统命令。
I wrote this up quickly to test the concept: 我快速写了这个来测试这个概念:
<target name="foo">
<property name="my.property" value="file:C:/foo/bar"/>
<exec executable="/bin/cut" inputstring="${my.property}" outputproperty="new.property">
<arg line="-d':' -f2-"/>
</exec>
<echo message="FOO: ${new.property}"/>
</target>
Unfortunately this only works if you can build on a system with /bin/cut or some sort of executable you can use. 不幸的是,只有在可以使用/ bin / cut或可以使用某种可执行文件的系统上构建时,这才有效。
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