一、常见的ant自带task
1.echo 显示在console或者是file中
<echo message="hello">
<echo message="Good morning!" file="log.txt" append="true">
2.mkdir 创建文件
<mkdir dir="${dist}/lib">
3.copy 拷贝文件(执行copy条件，源文件新于目标文件or目标文件不存在)
<copy todir="${dist}/conf" overwrite="true">
<fileset dir="${src}/WEB-INF">
<include name="*.xml">
</fileset>
<copy>
4.自动打jar包和zip源码包
<target name="adbrandFacadeJarZip" depends="compile, pages" description="package adBrandFacade into jar and zip files">
<jar jarfile="${dist.dir}/${ead_name}.jar" compress="true" basedir="${build.dir}">
<include name="**/IAdBrandDao.class" />
<include name="**/AdBrandDaoImpl.class" />
</jar>
<zip destfile="${dist.dir}/${ead_name}-src.zip">
<fileset dir="${src.dir}">
<include name="**/IAdBrandDao.java" />
<include name="**/AdBrandDaoImpl.java" />
</fileset>
</zip>
</target>
5.scp 远程拷贝
<scp todir="user:password@somehost:/home/">
<fileset dir="src_dir">
<include name="**/*.java"/>
</fileset>
</scp>
二、target下的task自定义
1.java文件（jar）
public class HelloWorld {
String msg;
public void execute() {
System.out.println(msg);
}
public void setMsg(String msg) {
this.msg = msg;
}
}
2.build.xml配置
<target description="Use the Task">
<taskdef name="helloworld" classname="HelloWorld" classpath="helloworld.jar"/>
<helloworld msg="Hello World"/>
</target>