Ant 封装应用

由 ?﹏???ζ???﹏﹏? 创建，路飞 最后一次修改 2016-08-12 Ant 封装应用我们通过 Hello World Fax Web 应用，已经琐碎地学习了 Ant 的不同方面的知识了。现在是时候把我们所学的知识都运用起来创建一个全面和完整的 build.xml 文件了。考虑下面给出的 build.properties 和 build.xml 文件：build.propertieseploy.path = c:\tomcat6\webappsbuild.xml<?xml version = "1.0"?><project name = "fax" basedir = "." default = "usage"> <property file = "build.properties"/> <property name = "src.dir" value = "src"/> <property name = "web.dir" value = "war"/> <property name = "javadoc.dir" value = "doc"/> <property name = "build.dir" value = "${web.dir}/WEB-INF/classes"/> <property name = "name" value = "fax"/> <path id = "master-classpath"> <fileset dir = "${web.dir}/WEB-INF/lib"> <include name = "*.jar"/> </fileset> <pathelement path = "${build.dir}"/> </path> <target name = "javadoc"> <javadoc packagenames = "faxapp.*" sourcepath = "${src.dir}" destdir = "doc" version = "true" windowtitle = "Fax Application"> <doctitle><![CDATA[<h1> = Fax Application = </h1>]]> </doctitle> <bottom><![CDATA[Copyright ? 2011. All Rights Reserved.]]> </bottom> <group title = "util packages" packages = "faxapp.util.*"/> <group title = "web packages" packages = "faxapp.web.*"/> <group title = "data packages" packages = "faxapp.entity.*:faxapp.dao.*"/> </javadoc> </target> <target name = "usage"> <echo message = ""/> <echo message = "${name} build file"/> <echo message = "-----------------------------------"/> <echo message = ""/> <echo message = "Available targets are:"/> <echo message = ""/> <echo message = "deploy --> Deploy application as directory"/> <echo message = "deploywar --> Deploy application as a WAR file"/> <echo message = ""/> </target> <target name = "build" description = "Compile main source tree java files"> <mkdir dir = "${build.dir}"/> <javac destdir = "${build.dir}" source = "1.5" target = "1.5" debug = "true" deprecation = "false" optimize = "false" failonerror = "true"> <src path = "${src.dir}"/> <classpath refid = "master-classpath"/> </javac> </target> <target name = "deploy" depends = "build" description = "Deploy application"> <copy todir = "${deploy.path}/${name}" preservelastmodified = "true"> <fileset dir = "${web.dir}"> <include name = "**/*.*"/> </fileset> </copy> </target> <target name = "deploywar" depends = "build" description = "Deploy application as a WAR file"> <war destfile = "${name}.war" webxml = "${web.dir}/WEB-INF/web.xml"> <fileset dir = "${web.dir}"> <include name = "**/*.*"/> </fileset> </war> <copy todir = "${deploy.path}" preservelastmodified = "true"> <fileset dir = "."> <include name = "*.war"/> </fileset> </copy> </target> <target name = "clean" description = "Clean output directories"> <delete> <fileset dir = "${build.dir}"> <include name = "**/*.class"/> </fileset> </delete> </target></project>在上面给出的例子中：我们首先在 build.properties 文件中声明了存放 Tomcat 的 webapp 文件夹的路径，并用变量 deploy.path 来保存。我们声明一个源文件夹来存放 java 文件，并用变量 src.dir 来保存。接下来，我们声明另一个源文夹来存放 web 文件，并用变量 web.dir 来保存。变量 javadoc.dir 用来存储 java 文档，变量 build.dir 是用来存储配置输出文件的路径。然后，我们给这个 web 应用命名，也就是 fax 传真。我们还定义了包含 JAR 文件的基本类路径，在上面给出的项目中也就是： WEB-INF/lib 文件夹。我们还将 build.dir 中的类文件存放在基本类路径下。这个 Javadoc 目标产生项目所需的文档，以及说明目标使用的 javadoc 文档。上述的例子向我们展示了两个部署目标： deploy 和 deploywar 。这个 deploy 目标将文件从 web 目录复制到部署目录，并保存最后修改日期时间戳。这样很有用，特别是当我们将项目部署到服务器上,并且该服务器支持热部署。（释义：所谓热部署，就是在应用正在运行的时候升级软件，却不需要重新启动应用。）这个 clean 目标清楚所有之前的构建文件。这个 deploywar 目标构建 war 文件,然后将 war 文件复制到应用程序服务器的部署目录。