扩展ant功能，自动分析eclipse文件制作war包

以前都是用maven2做项目管理，但最近又用回了ant脚本执行打包，发现每次改变工程得jar依赖后打war包很麻烦，还得手工改变build.xml中的引用，所以为了偷懒就的相隔一劳永逸的办法，于是产生了如下偷懒的代码（可能技术进步都是因为我们想从无意义的手工劳动中解脱出来 ）

1.扩展的ant类，分析classpath文件，替换变量M2_REPO以获得依赖jar的全路径，并执行copy

java 代码

 import  java.io.FileInputStream;
 import  java.io.FileNotFoundException;
 import  java.io.IOException;
 import  java.util.ArrayList;
 import  java.util.Iterator;
 import  java.util.List;

 import  org.apache.tools.ant.BuildException;
 import  org.apache.tools.ant.Project;
 import  org.apache.tools.ant.Task;
 import  org.apache.tools.ant.util.FileUtils;
 import  org.dom4j.Document;
 import  org.dom4j.Element;
 import  org.dom4j.io.SAXReader;


 /**
  * 类说明: 分析.classpath文件的jar引用，并copy到war
  * 创建时间: 2007-10-31 下午02:23:42
  * @author Seraph
  * @email: [email protected]
  */
 public   class  AntPathTask  extends  Task {

     private   static   final  String M2_REPO =  "M2_REPO" ;

     private   static   final  String ECLIPSE_DOM =  "/classpath/classpathentry" ;

     private  String libdir;

     private  String repository;

     private  String classpath;

     public  String getLibdir() {
         return  libdir;
     }

     public   void  setLibdir(String libdir) {
         this .libdir = libdir;
     }

     public  String getRepository() {
         return  repository;
     }

     public   void  setRepository(String repository) {
         this .repository = repository;
     }

     public  String getClasspath() {
         return  classpath;
     }

     public   void  setClasspath(String classpath) {
         this .classpath = classpath;
     }

     public  Project getProject() {
         return   super .getProject();
     }

     public   void  execute()  throws  BuildException {

         List list = getPathFromEclipseFile();
         copyJar(list);
         showPath(list);
     }

     public  List getPathFromEclipseFile() {

         SAXReader saxReader = new  SAXReader();
         Document document = null ;
         try  {
             document = saxReader.read(new  FileInputStream(classpath));
         } catch  (Exception e) {
             e.printStackTrace();
         }

         List list = document.selectNodes(ECLIPSE_DOM);
         List pathList = new  ArrayList();

         int  i =  0 ;
         for  (Iterator iterator = list.iterator(); iterator.hasNext();) {
              Element element= (Element) iterator.next();

              String kind = element.attributeValue("kind" );
              if ( "var" .equals(kind)){
                  String path = element.attributeValue("path" );
                  path = path.replaceAll(M2_REPO, repository);
                  pathList.add(path);
                  i++;
              }
         }
         return  pathList;
     }

     public   void  copyJar(List list) {

         FileUtils fileUtils = FileUtils.newFileUtils();
         for  (Iterator iterator = list.iterator(); iterator.hasNext();) {
             String fileName = (String) iterator.next();
             String[] strs = null ;
             try  {
                 strs = fileName.split("/" );
                 String destFile = libdir + "/"  + strs[strs.length -  1 ];
                 fileUtils.copyFile(fileName, destFile, null ,  true );
             } catch  (FileNotFoundException e1) {
                 log("指定的变量[M2_REPO]路径下找不到所需Jar，请配置正确路径。所需文件："
                         + strs[strs.length - 1 ], Project.MSG_ERR);
             } catch  (IOException e2) {
                 e2.printStackTrace();
             }
         }
     }

     public   void  showPath(List list) {

         log("Find .classpath file path of eclipse is: \""  + classpath +  "\"" );
         log("CRMS Project include jar files: " );

         for  (Iterator iterator = list.iterator(); iterator.hasNext();) {
             String path = (String) iterator.next();
             log(path);
         }
         log("Total of jar files: "  + list.size());
     }
 }

2.ant的build.xml文件，使用扩展的ant任务taskdef，其中M2_REPO是eclipse的变量，而工程所引用的依赖都是通过此变量添加到工程中的

 

<?xml version="1.0" encoding="UTF-8"?>
<project name="crms" default="clean-jar" basedir=".">

	<property name="M2_REPO" value="D:/repository" />
	<property name="abator.dir" value="${M2_REPO}/abator/abator/1.0.0" />
	<property name="ant-extend.dir" value="${M2_REPO}/ant-extending/ant-extending/1.0.0" />
	<property name="build.dir" location="target/classes" />
	<property name="webapp.dir" value="src/main/webapp" />
	<property name="resources.dir" value="src/main/resources" />
	<property name="classpath.dir" location=".classpath" />
	<property name="lib.dir" value="${webapp.dir}/WEB-INF/lib" />
	<property name="generated.source.dir" value="${basedir}" />

	<!-- - - - - - - - - - - - - - - - - - 
          import: Ant> Runtime> Global Entries> dom4j1.6; jaxen1.1;
         - - - - - - - - - - - - - - - - - -->
	<taskdef name="createPath" classname="com.seraph.extending.AntPathTask" classpath="${ant-extend.dir}/ant-extending-1.0.0.jar" />

	<!-- - - - - - - - - - - - - - - - - - 
          target: 通过自动分析.classpath文件中的引用，拷贝jar包
         - - - - - - - - - - - - - - - - - -->
	<target name="copy-jar">
		<createPath libdir="${lib.dir}" repository="${M2_REPO}" classpath="${classpath.dir}" />
	</target>

	<target name="create-war" depends="copy-jar">
		<war destfile="crms.war" webxml="${webapp.dir}/WEB-INF/web.xml">
			<fileset dir="${webapp.dir}" />
			<classes dir="${build.dir}" />
		</war>
	</target>

	<target name="clean-jar" depends="create-war">
		<delete dir="${lib.dir}" />
	</target>

	<!-- - - - - - - - - - - - - - - - - - 
          target: Abator ORM 生成器
         - - - - - - - - - - - - - - - - - -->
	<target name="abator" description="Generate the ibatis files">
		<taskdef name="abator"
	                classname="org.apache.ibatis.abator.ant.AbatorAntTask"
	                classpath="${abator.dir}/abator-1.0.0.jar" />
		<abator overwrite="flase" configfile="${resources.dir}/abatorConfig.xml" verbose="false" >
			<propertyset>
				<propertyref name="generated.source.dir"/>
			</propertyset>
		</abator>
	</target>

</project>

 

 

3.在运行时需在eclipse的ant运行环境中，加入dom4j,saxpath及jaxen包的引用

4.好了可以看看屏幕上的输出了，war很快就打好了

 

PS: 开发Ant扩展时在Eclipse中的调试方法：

 

Run Configurations>Java Application

 

创建一个java application，Main选项卡中的Project项中选自己扩展Ant所在的项目，Main Class项中添入“org.apache.tools.ant.Main ”

 

在Arguments选项卡中的Project Arguments中添入“-f  "[your build.xml path] [your task name] " ”
如：-f "/Users/seraph/Workshop/workspace/ant-extending/build.xml" copy-jar”

 

最后：Run

 

 

God bless you.