设计和构建Ant

•  XML解析库和Project描述

       

<?xml version="1.0"?>
<description>First Ant</description>
<project name="myAPP" default="all" basedir=".">

•  全局变量

全局路径

<!-- Project-wide settings. All directories are  relative to the root project directory-->
<!--project directories-->
<property name="src.dir" value="src"/>
<property name="doc.dir" value="doc"/>
<property name="dist.dir" value="dist"/>
<property name="lib.dir" value="lib"/>
<property name="bin.dir" value="bin"/>

<!--Temporary build directory names-->
<property name="build.dir" value="build"/>
<property name="build.classes" value="${build.dir}/classes"/>
<property name="build.doc" value="${build.dir}/doc"/>
<property name="build.lib" value="${build.dir}/lib"/>

 

除了全局目录外，对于某些任务，对特性也适应全局定义。在此，我们定义一个全局特性，它将通知javac是否生成带调试信息的字节码。javac任务的所有实例将用到此特性。

<!--Global settings-->
<property name="javac.debug" value="on"/>

 build.compiler属性。将其值设置为modern，它告诉javac使用Java SDK中的可用的、最新版本的Sun编译器。

<!--Global  "Magic" property for javac-->
<property name="build.compiler" value="modern"/>

 

库目录

<path id="classpath">
      <fileset dir="${lib.dir}">
               <includes name="**/*.jar"/>
      </fileset>
</path>

 

• 目录创建

为了构建build目录及其子目录，定义一个准备目标来创建此构建目录，并记录构建时间，对自动构建非常有用

<!--Target to create the build directories prior to a compiler target-->
<!--And we also mark the start time of the  build,for the log-->
<target name="prepare">
<mkdir dir="${build.dir}"/>
<mkdir dir="${build.lib}"/>
<mkdir dir="${build.classes}"/>
<mkdir dir="${build.classes}/modules"/>

<tstamp/>

<echo message="${TSTAMP}"/>

</target>

 

• 编译

编译并且打包至jar（项目类）

<!--Build   the myApp application-->
<target name ="myApp" depends="prepare">

<!--Compile the application classes,not the module classes-->
<javac destdir="${build.classes}" 
            debug="${debug.flag}"
             deprecation="on">
<src path="${src.dir}"/>
<excludes name="myApp/modules/**"/>
<classpath refid="classpath"/>
</javac>
<!--package the application into a jar-->
<jar jarfile="${build.lib}/myApp.jar"
        basedir="${build.classes}">
<excludes name="myApp/modules/**"/>
</jar>

 

把module和类区分开来编译只是为了以后开发人员有新的module添加进来的时候不至于混乱

 

 编译并且打包module

 

<!--Build the myApp modules-->
<target name="modules" depends="prepare,myAPP">
<!--Compile just the module classes-->
<javac destdir="${build.classes}/modules"
            debug="${debug.flag}"
            deprecation="on">
<src path="${src.dir}"/>
<includes name="myAPP/modules/**"/>
<classpaht refid="classpath"/>
</javac>
<!--Build the  modules as a jar-->
<jar jarfile="${build.lib}/modules.jar"
        basedir="build.classes"/modules>
<includes name="myAPP/modules/**"/>
</jar>

• 清除

为了确保所需编译的内容确实会得到编译，需要clean build

<!--Delete class  files build during previous builds, Leave directories-->
<target name="clean">
<delete>
<fileset dir="${build.classes}" includes="**/*.classes"/>
</delete>
</target>
<!--Delete any created directories and   their contents-->
<target name="cleanall" depends="clean">
<delete dir="${build.dir}"/>
<delete dir="${dist.dir}"/>
<delete dir="${doc.dir}"/>
</target>

</project>

•  发布

不做详细叙述。