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: [e-mail]
 */
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.