我写的第一个ant文件

<?xml version="1.0" encoding="UTF-8"?>
<!-- ================================================ -->
<!--  Sample buildfile for jar components             -->
<!--                                                  -->
<!-- ================================================ -->
<project name="sample" default="build">
 <property name="build.home" location="build" />
 <property name="src.home" location="src" />
 <property name="dist.home" location="dist" />
 <property name="lib.home" location="lib"></property>

 <property name="app.name" value="HibernateOne" />
 <!-- - - - - - - - - - - - - - -->
 <!--  target: init             -->
 <!-- - - - - - - - - - - - - - -->
 <target name="init">
  <tstamp />

  <mkdir dir="${src.home}" />

 </target>

 <path id="compile.classpath">
  <pathelement path="${build.home}" />
  <fileset file="${lib.home}/*.jar" />
 </path>

 <!-- ========================= -->
 <!--   target: build           -->
 <!-- ========================= -->
 <target name="build" depends="init,clean" description="compile and jar this component">
  <mkdir dir="${build.home}" />
  <javac srcdir="${src.home}" destdir="${build.home}" deprecation="${compile.deprecation}" optimize="${compile.optimize}">
   <classpath refid="compile.classpath" />
  </javac>
  <echo message="build completed" />
  <mkdir dir="${dist.home}" />
  <jar destfile="${dist.home}/${app.name}.jar" basedir="${build.home}" excludes="**/*UT.class" />
  <echo message="distributed completed" />
 </target>

 <target name="clean" description="clean the build directory">
  <delete dir="${build.home}" />
  <echo message="${build.home} has been clean." />
 </target>
</project>