Ant

First,download a apache-ant-1.7.1 from apache site on network.then u need to config the "Path" of environment variables.If the ant unzip at E:\apache-ant-1.7.1,so u need add "E:\apache-ant-1.7.1\bin" to the path.then print the ant -version on cmd:

      Apache Ant version 1.7.1 compiled on June 27 2008

it verified that u r ant work well.

then when I want to use the ant to deploy my project ,I should add a build.xml and build.properties at the root of this project.

the contents are:

  build.xml

<project name="StrutsSample" default="help" basedir=".">

<!-- ===================== Property Definitions =========================== -->

    <!--
         All properties should be defined in this section.
         Any host-specific properties should be defined
         in the build.properties file.

         In this app, the following properties are defined in build.properties:

        o  tomcat.home     - the home directory of your Tomcat installation
        o  webapps.home    - the place to copy the war file to deploy it
    -->

  <property file="build.properties" />
 

  <property name="app.home"          value="." />
  <property name="app.name"          value="StrutsSample" />
  <property name="javadoc.pkg.top"   value="com/yourcompany/struts" />

  <property name="src.home"          value="${app.home}/src"/>
  <property name="lib.home"          value="${app.home}/WebRoot/WEB-INF/lib"/>
  <property name="classes.home"       value="${app.home}/classes"/>
  <property name="deploy.home"       value="${app.home}/deploy"/>
  <property name="doc.home"          value="${app.home}/doc"/>
  <property name="web.home"          value="${app.home}/WebRoot"/>

  <property name="build.home"        value="${app.home}/build"/>
  <property name="build.classes"     value="${build.home}/WEB-INF/classes"/>
  <property name="build.lib"         value="${build.home}/WEB-INF/lib"/>

<!-- ==================== Compilation Classpath =========================== -->

    <!--
         This section creates the classpath for compilation.
    -->

  <path id="compile.classpath">

    <!-- The object files for this application -->
    <pathelement location="${classes.home}"/>

    <!-- The lib files for this application -->
    <fileset dir="${lib.home}">
      <include name="*.jar"/>
      <include name="*.zip"/>
    </fileset>

    <!-- All files/jars that Tomcat makes available -->
    <fileset dir="${tomcat.home}/lib">
      <include name="*.jar"/>
    </fileset>
    <pathelement location="${tomcat.home}/classes"/>

  </path>


<!-- ==================== Build Targets below here========================= -->


<!-- ==================== "help" Target =================================== -->

    <!--
         This is the default ant target executed if no target is specified.
         This helps avoid users just typing 'ant' and running a
         default target that may not do what they are anticipating...
    -->

 <target name="help" >
   <echo message="Please specify a target! [usage: ant &lt;targetname&gt;]" />
   <echo message="Here is a list of possible targets: "/>
   <echo message="  clean-all.....Delete build dir, all .class and war files"/>
   <echo message="  prepare.......Creates directories if required" />
   <echo message="  compile.......Compiles source files" />
   <echo message="  build.........Build war file from .class and other files"/>
   <echo message="  deploy........Copy war file to the webapps directory" />
   <echo message="  javadoc.......Generates javadoc for this application" />
 </target>

<!-- ==================== "clean-all" Target ============================== -->

   <!--
          This target should clean up any traces of the application
          so that if you run a new build directly after cleaning, all
          files will be replaced with what's current in source control
   -->

 <target name="clean-all" >
    <delete dir="${build.home}"/>
    <delete dir="${classes.home}"/>
    <delete dir="${deploy.home}"/>

    <!-- can't delete directory if Tomcat is running -->
    <delete dir="${webapps.home}/${app.name}" failonerror="false"/>

    <!-- deleting the deployed .war file is fine even if Tomcat is running -->
    <delete dir="${webapps.home}/${app.name}.war" />

    <!-- delete the javadoc -->
    <delete dir="${doc.home}"/>

 </target>

<!-- ==================== "prepare" Target ================================ -->

    <!--
          This target is executed prior to any of the later targets
          to make sure the directories exist. It only creates them
          if they need to be created....
          Other, similar, preparation steps can be placed here.
    -->

  <target name="prepare">

    <echo message="Tomcat Home = ${tomcat.home}" />
    <echo message="webapps Home = ${webapps.home}" />

    <mkdir dir="${classes.home}"/>
    <mkdir dir="${deploy.home}"/>

    <mkdir dir="${doc.home}"/>
    <mkdir dir="${doc.home}/api"/>

    <mkdir dir="${build.home}"/>
    <mkdir dir="${build.home}/WEB-INF" />
    <mkdir dir="${build.home}/WEB-INF/classes" />
    <mkdir dir="${build.home}/WEB-INF/lib" />

  </target>

<!-- ==================== "compile" Target ================================ -->

    <!--
          This only compiles java files that are newer
          than their corresponding .class files.
     -->

  <target name="compile" depends="prepare" >
    <javac srcdir="${src.home}" destdir="${classes.home}" debug="yes" >
        <classpath refid="compile.classpath"/>
    </javac>
  </target>

<!-- ==================== "build" Target ================================== -->

    <!--
          This target builds the war file for the application
          by first building the directory structure of the
          application in ${build.home} and then creating the
          war file using the ant <war> task
     -->

  <target name="build" depends="compile" >

    <!-- Copy all the webapp content (jsp's, html, tld's, xml, etc. -->
    <!-- Note that this also copies the META-INF directory -->
    <copy    todir="${build.home}">
      <fileset dir="${web.home}"/>
    </copy>

    <!-- Now, copy all the Java class files -->
    <copy    todir="${build.home}/WEB-INF/classes">
      <fileset dir="${classes.home}"/>
    </copy>

    <!-- Now, copy all the properties files, etc that go on the classpath -->
    <copy    todir="${build.home}/WEB-INF/classes">
      <fileset dir="${src.home}">
         <include name="**/*.properties" />
         <include name="**/*.prop" />
      </fileset>
    </copy>

    <!-- Now, copy all the jar files we need -->
    <copy    todir="${build.home}/WEB-INF/lib">
      <fileset dir="${lib.home}" />
    </copy>

    <!-- Create the <war> file -->
    <jar jarfile="${deploy.home}/${app.name}.war"
         basedir="${build.home}"/>

  </target>

<!-- ==================== "deploy" Target ================================= -->

    <!--
         This target simply copies the war file from the deploy
         directory into the Tomcat webapp directory.
     -->

  <target name="deploy" depends="build" >

    <!-- Copy the contents of the build directory -->
    <copy todir="${webapps.home}"  file="${deploy.home}/${app.name}.war" />

  </target>

<!-- ==================== "doc" Target ==================================== -->

    <!--
         This task creates javadoc. It is dependent upon only the
         'compile' target so it is not executed in a normal build.
         As a result, the target needs to be run on its own.
    -->

  <target name="javadoc" depends="compile">
      <javadoc sourcepath = "${src.home}"
                  destdir = "${doc.home}/api"
             packagenames = "${javadoc.pkg.top}.*"/>
  </target>

</project>

 The build.properties(config the path of Tomcat):

 tomcat.home=C:/Program Files/Apache Software Foundation/Tomcat 6.0
 webapps.home=C\:/Program Files/Apache Software Foundation/Tomcat 6.0/webapps

 then go to the project by cmd:

  print "ant -deploy "to generate the war,classes and so on

  print "ant -javadoc " to generate the document of the classes u want to

then u will found them (This example is based on the book of Sunweiqin):