ant 编译 flex

在Eclipse下使用Ant编译Flex程序
我的机器内存1G，如果使用Eclipse Flex插件编译程序，用不了多久系统内存就会耗尽，机器会变得极其缓慢。使用Flex Builder 2.01似乎情况要好一点，但是觉得Eclipse似乎更加好用一点，比如Ctrl + Alt + LEFT可以将一块代码向左移……Flex Builder好像没有类似的快捷键，虽然有类似的命令。另外还要进行ColdFusion，js开发，如果总是将IDE换来换去多麻烦啊。

在网上浏览时看到使用ant来编译可以提高速度、减少内存占有率。当然也可以直接使用命令行mxmlc等命令来编译，但是不如使用ant方便——ant其实也是使用mxmlc命令来编译。

Adobe labs提供了ant tasks工具包并有一些使用方法，是英文并且不怎么详细。有几个中文Blog文章有写相关，但是大多是针对旧版本的Flex SDK，我现在使用的SDK是2.0正式版，较之那些教程上的版本新，导致那些教程上的例子不能执行。

以Eclipse3.2.1为例，一步步来吧。

   1. 从Adobe labs上下载最新的ant tasks工具包，地址：http://labs.adobe.com/wiki/index.php/Flex_Ant_Tasks。
   2. 解压缩。
   3. 将flexTasks.jar拷贝到eclipse的ant lib根目录下面，ant lib目录一般在eclipse根目录下，如\plugins\org.apache.ant_ant版本号\lib。
   4. 在项目根目录中新建flexTasks文件，拷入ant tasks中的几个文件加：lib和resources。
   5. 在项目根目录中建立build.xml。build.xml文件内容可参考：http://nstar.iteye.com/blog/129653, 这里也有一个示例，ant的命令可以到 ant的官方网站去查，今天在我的火狐2.0中地址栏输入ant move，居然FF自动进入了ant官方网站并且显示task move 是不是FF的开发人员也用ant，为了方便查找而设置的，因为输入其他关键字一般进入的Google：
      <?xml version="1.0" encoding="utf-8"?>
      <project name="Flex Ant Builder Sample Project" basedir=".">
          <taskdef resource="flexTasks.tasks" classpath="${basedir}/flexTasks/lib/flexTasks.jar" />      
          <property name="FLEX_HOME" value="D:/eclipse/Adobe/Flex Builder 2 Plug-in/Flex SDK 2"/>
          <property name="APP_ROOT" value="${basedir}"/>
          <property name="DEPLOY_DIR" value="bin"/>
          <!-- compiled mxml/as file Name -->
          <property name="fileName" value="ActorLines" />
          <!-- compiled mxml/as file ext -->
          <property name="fileExt" value="mxml" />
          <!-- third party swc-->
          <!--<property name="THIRD_PARTY" value="D:/work/thirdparty/FlexLib" />-->
          <!-- modular application's main application fileName -->
          <property name="mainApp" value="" />
          <!-- output package direction,end with / -->
          <property name="package" value="" />
         
          <property name="FLASHPLAYER" value="D:/eclipse/Adobe/Flex Builder 2 Plug-in/Player/debug/SAFlashPlayer.exe" />
          <property name="IE" value="C:\Program Files\Internet Explorer\iexplore.exe" />
         
          <!-- compile a mxml/as file -->
          <target name="compile" depends="cleanCompile">
              <mxmlc
                  file="${APP_ROOT}/${package}${fileName}.${fileExt}"
                  output="${DEPLOY_DIR}/${package}${fileName}.swf"
                  actionscript-file-encoding="UTF-8"
                  keep-generated-actionscript="false"
                  warnings="false"
                  incremental="true"
                  >
                 
                  <!-- ***** source file path *******-->
                  <compiler.source-path path-element="${basedir}"/>
                 
                  <!-- Get default compiler options. -->
                  <load-config filename="${FLEX_HOME}/frameworks/flex-config.xml"/>           
                  <!-- List of path elements that form the roots of ActionScript class hierarchies. -->
                  <source-path path-element="${FLEX_HOME}/frameworks"/>
                  <!-- List of SWC files or directories that contain SWC files. -->
                  <compiler.library-path dir="${FLEX_HOME}/frameworks" append="true">
                      <include name="libs" />
                      <include name="../bundles/{locale}" />
                  </compiler.library-path>
                 
                  <!-- ***** thirdparth swc ***** -->
                  <!--<compiler.include-libraries dir="${THIRD_PARTY}" append="true">
                      <include name="DistortionEffects.swc" />
                  </compiler.include-libraries>       -->    
                 
                  <!-- Set size of output SWF file.
                  <default-size width="500" height="600" />
                  -->
              </mxmlc>
              <delete>
                  <!-- Deletes cache file -->
                  <fileset dir="${APP_ROOT}/${package}" includes="${fileName}*.cache" defaultexcludes="false"/>
              </delete>
          </target>
          <!-- compile mxml file and Generate a Link Report for the embed module -->
          <target name="CompileAndGenerateLinkReport">
              <mxmlc
                  file="${APP_ROOT}/${package}${fileName}.${fileExt}"
                  link-report="${APP_ROOT}/${package}${fileName}_LinkReport.xml"
                  output="${DEPLOY_DIR}/${package}${fileName}.swf"
                  actionscript-file-encoding="UTF-8"
                  keep-generated-actionscript="false"
                  incremental="true"
                  >
                  <!-- Get default compiler options. -->
                  <load-config filename="${FLEX_HOME}/frameworks/flex-config.xml"/>           
                  <!-- List of path elements that form the roots of ActionScript class hierarchies. -->
                  <source-path path-element="${FLEX_HOME}/frameworks"/>
                  <source-path path-element="${APP_ROOT}"/>
                  <!-- List of SWC files or directories that contain SWC files. -->
                  <compiler.library-path dir="${FLEX_HOME}/frameworks" append="true">
                      <include name="libs" />
                      <include name="../bundles/{locale}" />
                  </compiler.library-path>
                  <!-- Set size of output SWF file. -->
                  <default-size width="500" height="600" />
              </mxmlc>
              <delete>
                  <!-- Deletes cache file -->
                  <fileset dir="${APP_ROOT}/${package}" includes="${fileName}*.cache" defaultexcludes="false"/>
              </delete>
          </target>
          <!-- compile Modular mxml file with mainApp's Link Report -->
          <target name="CompileModuleWithLinkReport">
                  <mxmlc
                      file="${APP_ROOT}/${package}${fileName}.${fileExt}"
                      load-externs="${APP_ROOT}/${mainApp}_LinkReport.xml"
                      output="${DEPLOY_DIR}/${package}${fileName}.swf"
                      actionscript-file-encoding="UTF-8"
                      keep-generated-actionscript="false"
                      incremental="true"
                      >
                      <!-- Get default compiler options. -->
                      <load-config filename="${FLEX_HOME}/frameworks/flex-config.xml"/>           
                      <!-- List of path elements that form the roots of ActionScript class hierarchies. -->
                      <source-path path-element="${FLEX_HOME}/frameworks"/>
                      <!-- List of SWC files or directories that contain SWC files. -->
                      <compiler.library-path dir="${FLEX_HOME}/frameworks" append="true">
                          <include name="libs" />
                          <include name="../bundles/{locale}" />
                      </compiler.library-path>
                      <!-- Set size of output SWF file. -->
                      <default-size width="500" height="600" />
                  </mxmlc>
              <delete>
                  <!-- Deletes cache file -->
                  <fileset dir="${APP_ROOT}/${package}" includes="${fileName}*.cache" defaultexcludes="false"/>
              </delete>
              </target>
          <!-- wrapper a swf with html express-installation template-->
          <target name="wrapper" depends="cleanWrapper">
              <html-wrapper
                  title="Actor's lines in web"
                  width="100%"
                  height="100%"
                  application="flexApp"
                  swf="${fileName}"
                  version-major="9"
                  version-minor="0"
                  version-revision="0"
                  history="true"             
                  template="express-installation"
                  output="${DEPLOY_DIR}/${package}"/>
              <move file="${DEPLOY_DIR}/${package}index.html" tofile="${DEPLOY_DIR}/${fileName}.html"/>
              <copy todir="${DEPLOY_DIR}/assets">
                  <fileset dir="./assets" />
              </copy>
          </target>
          <!-- clean preview previous compile file -->
          <target name="cleanCompile">
              <delete dir="${APP_ROOT}/${package}generated"/>
              <delete>
                  <fileset dir="${DEPLOY_DIR}/${package}" includes="${fileName}*.swf"/>
              </delete>
          </target>
          <!-- clean preview previous wrapper file -->
          <target name="cleanWrapper">
              <delete>
                  <!-- Deletes history.swf -->
                  <fileset dir="${DEPLOY_DIR}/${package}" includes="history.swf" defaultexcludes="false"/>
                  <!-- Deletes playerProductInstall.swf -->
                  <fileset dir="${DEPLOY_DIR}/${package}" includes="playerProductInstall.swf" defaultexcludes="false"/>
                  <!-- Deletes ${fileName}.html -->
                  <fileset dir="${DEPLOY_DIR}/${package}" includes="${fileName}*.html" defaultexcludes="false"/>
                  <!-- Deletes history.htm -->
                  <fileset dir="${DEPLOY_DIR}/${package}" includes="$history.htm" defaultexcludes="false"/>
                  <!-- Deletes history.js and AC_OETags.js -->
                  <fileset dir="${DEPLOY_DIR}/${package}" includes="*.js" defaultexcludes="false"/>
                  <!-- Deletes all assets -->
                  <fileset dir="${DEPLOY_DIR}/assets" includes="*.*"/>           
              </delete>   
          </target>   
         
          <target name="run" depends="compile" description="Compile and run it.">
              <exec executable="${FLASHPLAYER}">
                  <arg value="${DEPLOY_DIR}/${package}${fileName}.swf" />
              </exec>
          </target>

          <target name="runie" depends="compile" description="Compile and run it.">
              <exec executable="${IE}">
                  <arg value="${basedir}\${DEPLOY_DIR}\${package}${fileName}.html" />
              </exec>
          </target>
      </project>

弄完build.xml之后，基本上就完成ant的设置，现在可以享受ant带来的速度与便捷了。
如何使用ant运行任务

   1. 在命令行里面输入ant targetname；
   2. 建立cmd文件，里面输入ant targetname，以后就只要双击这个cmd文件。
   3. 在eclipse中选择build.xml，然后右键选择Run as -> ant bulid，在弹出的对话框中选择Targets，然后选择一个Target，在Build中去掉Build before lunch前面的勾，现在可以Run啦。在Eclipse的控制台里面可以看到信息显示。


转自：http://www.cnblogs.com/fzhenmei/archive/2007/12/07/986733.html