最近在一个项目(湖北质检)，要求搭建一个专门的版本发布服务器，为了将源代码构建并在服务器上测试，而选用ANT来实现。但是，在执行起动Tomcat服务时会有二个起动脚本（startup.sh与startup.bat），这二个脚本分别用于Unix与Windows操作系统；因此，为了适应不同平台的构建，需要根据不同OS来执行不同的脚本。但是，ANT本身还没有条件判断的功能，所以，此处需要借助Ant-Contrib包来实现。具体如下：
一：）下载
apache-ant-版本号-bin.zip文件（此处是
apache-ant-1.7.0-bin.zip）：
下载
apache-ant-1.7.0-bin.zip
二：）下载
ant-contrib-版本号.jar文件（此处是ant-contrib-1.0b3.jar）：
下载
ant-contrib-1.0b3.jar
三：）解压ANT安装文件（
apache-ant-1.7.0-bin.zip）到某一目录，如：
D:\Program Files\Apache_ANT_1.7.0
四：）配置环境变量（path与classpath）：
ANT_HOME=D:\Program Files\Apache_ANT_1.7.0
path=%path%;%ANT_HOME%\bin;
classpath=%ANT_HOME%\lib;
五：）安装ant-contrib-1.0b3.jar，下面是ant-contrib-1.0b3.jar解压包中的指南对安装的说明，如下：
First you must install Apache Ant itself, most of the Ant-Contrib tasks require Ant 1.5 or higher to work properly, however, there are some tasks, specifically <for> which require Ant 1.6. You can download Ant from Apache.
Then you need the Ant-Contrib tasks themselves. As there is no release of these tasks yet, you have to build them from sources. Fortunately this is easy, check out the sources (grab the ant-contrib module from CVS), change into the source directory of ant-contrib and type ant. After Ant has completed, you'll find ant-contrib-version.jar in the lib subdirectory.
You now have the choice:
- Copy
ant-contrib-version.jar to the lib directory of your Ant installation, or on your CLASSPATH environment variable. If you want to use one of the tasks in your project, add the line
<taskdef resource="net/sf/antcontrib/antlib.xml"/>
to your build file.
- Keep
ant-contrib-version.jar in a separate location. You now have to tell Ant explicitly where to find it (say in /usr/share/java/lib):
<taskdef resource="net/sf/antcontrib/antlib.xml">
<classpath>
<pathelement location="/usr/share/java/lib/ant-contrib-version.jar"/>
</classpath>
</taskdef>
- If you would like to use run with Ant Version 1.5 you must use the the .properties file instead. Keep in mind that some tasks will not be available to you , such as the <for> task:
<taskdef resource="net/sf/antcontrib/antcontrib.properties">
<classpath>
<pathelement location="/usr/share/java/lib/ant-contrib-version.jar"/>
</classpath>
</taskdef>
六：）现在可以使用ant-contrib的功能来添加到ANT构建文件中，下面是本项目（湖北质检）的构建文件，如下(注意红色部分的条件定义与判断的执行):
<?xml version="1.0" encoding="UTF-8" ?>
<project name="QCSystem" default="startWebApplication" basedir=".">
<description>湖北质检ANT构建与Tomcat应用起动配置文件，起动应用时根据不同的操作系统调用不同的Tomcat起运脚本（startup.sh或startup.bat）!</description>
<!-- ********** 构件文件相关属性 *********** -->
<!-- 系统环境变量 -->
<property environment="sys-env"/>
<!-- 通用路径或文件夹名称 -->
<property name="srcDir" location="src"/>
<property name="webAppDir" location="webapp"/>
<property name="webInfName" value="WEB-INF"/>
<property name="destDirName" value="classes"/>
<property name="tomcatCommonName" value="common"/>
<!-- 添加"Ant-Contrib"对ANT构建文件的支持 -->
<taskdef resource="net/sf/antcontrib/antcontrib.properties">
<classpath>
<pathelement location="${sys-env.ANT_HOME}/Ant-Contrib/ant-contrib-1.0b3.jar"/>
</classpath>
</taskdef>
<!-- 初始化操作系统判断条件 -->
<property name="winOS" value="win"/>
<property name="unixOS" value="unix"/>
<target name="init">
<echo message="初始化操作系统判断条件[开始]..." />
<condition property="OSType" value="${winOS}">
<os family="Windows"/>
</condition>
<condition property="OSType" value="${unixOS}">
<os family="UNIX"/>
</condition>
<echo message="初始化操作系统判断条件[结束]..." />
</target>
<!-- 第三方类库-->
<path id="compileLibFiles">
<fileset dir="${webAppDir}/${webInfName}/lib">
<include name="**/*.jar"/>
</fileset>
<fileset dir="${sys-env.CATALINA_HOME}/${tomcatCommonName}/lib">
<include name="**/*.jar"/>
</fileset>
</path>
<!-- 编译工程 -->
<target name="compile">
<echo message="湖北质检项目编译[开始] ..."/>
<javac srcdir="${srcDir}" debug="on" destdir="${webAppDir}/${webInfName}/${destDirName}" includes="**/*.java">
<classpath refid="compileLibFiles"/>
</javac>
<!-- 拷贝配置文件到编译目录 -->
<copy todir="${webAppDir}/${webInfName}/${destDirName}">
<fileset dir="${srcDir}" excludes="**/*.java"/>
</copy>
<echo message="湖北质检项目编译[结束] ..."/>
</target>
<!-- 根据不同的操作系统调用不同的Tomcat起动程序(Windows操作系统:startup.bat Unix操作系统:startup.sh) -->
<target name="startWebApplication" depends="init, compile">
<echo message="起动湖北质检应用[开始] ..."/>
<if>
<equals arg1="${OSType}" arg2="${winOS}"/>
<!-- 下边这种方式直接判断操作系统也可以 -->
<!--os family="WINDOWS"/-->
<then>
<exec dir="${sys-env.CATALINA_HOME}/bin" executable="${sys-env.CATALINA_HOME}/bin/startup.bat"/>
</then>
<else>
<exec dir="${sys-env.CATALINA_HOME}/bin" executable="${sys-env.CATALINA_HOME}/bin/startup.sh"/>
</else>
</if>
<echo message="起动湖北质检应用[结束] ..."/>
</target>
</project>