一，为减小 build.xml 文件的大小，使用XML实体

 

把属性的设置都放一个 XML 文件中

props.xml 文件

< property name ="build.dir" value ="build" />

然后在 build.xml 文件中加入如下

<! DOCTYPE project [ <!ENTITY properties SYSTEM "file:props.xml"> ]>

 

二，将多个目录的源文件编译到一个地方

 

< javac destdir ="build/classes">

    < src path ="src1"/>

    < src path ="src2"/>

</ javac >

 

三，保存构建时的信息

 

< project default ="init">

    < target name ="init"></ target >

    < property environment ="env" />

    < property name ="env.COMPUTERNAME" value ="${env.HOSTNAME}" />

    < propertyfile comment ="Build Information" file ="./buildinfo.properties">

        < entry key ="build.host" value ="${env.COMPUTERNAME}" />

        < entry key ="build.user.name" value ="${user.name}" />

        < entry key ="build.os.name" value ="${os.name}" />

    </ propertyfile >

</ project >

 

四，去除属性文件的注释

 

属性文件：

# 这里是注释，会给过滤掉

build.dir =build

build 文件：

< copy file ="props.properties" todir ="sample">

    < filterchain >

        < striplinecomments >

            < comment value ="#" />

        </ striplinecomments >

    </ filterchain >

</ copy >

 

五，两个花俏的功能

 

1. 声音提示

< project name ="Sound" default ="all">

    < property file ="build.properties" />

    < target name ="init">

        < sound >

            < success source ="${sound.dir}/success.wav" duration ="500" />

            < fail source ="${sound.dir}/fail.wav" loops ="2" />

        </ sound >

    </ target >

    < target name ="fail" depends ="init">

        < fail />

    </ target >

    < target name ="success" depends ="init" />

    < target name ="all" depends ="success" />

</ project >

 

2. 进度条提示

< project name ="splash" default ="init">

    < target name ="init">

        < splash imageurl ="http://java.chinaitlab.com/UploadFiles_8734/200610/20061021103415601.gif" showduration ="5000" />

        < sleep seconds ="1" />

        < sleep seconds ="1" />

        < sleep seconds ="1" />

        < sleep seconds ="1" />

        < sleep seconds ="1" />

        < sleep seconds ="1" />

    </ target >

</ project >