ant 使用命名空间自定义task

矫情吗；* 2022-04-13 10:27 168阅读 0赞

一：

首先，写三个ant 任务 （每个任务都必须继承org.apache.tools.ant.Task）

1：

package cn.cloud.ant;
    
    import org.apache.tools.ant.BuildException;
    import org.apache.tools.ant.Task;
    public class DetailTask extends Task
    {
    	public void execute() throws BuildException
    	{
    		System.out.println("detail can be execute");
    	}
    }

2：

package cn.cloud.ant;
    
    import org.apache.tools.ant.BuildException;
    import org.apache.tools.ant.Task;
    public class ListTask extends Task 
    {
    	public void execute() throws BuildException
    	{
    		System.out.println("this is list task");
    	}
    }

3：

package cn.cloud.ant;
    
    import org.apache.tools.ant.BuildException;
    import org.apache.tools.ant.Task;
    public class ShowTask extends Task
    {
    	public void execute() throws BuildException
    	{
    		System.out.println("show task");
    	}
    }

三：编写antlib.xml文件（该文件需要放在src跟目录下）

<?xml version="1.0"?>
    
    <antlib>
       <taskdef name="mylist" classname="cn.cloud.ant.ListTask"/>
       <taskdef name="myshow" classname="cn.cloud.ant.ShowTask"/>
       <taskdef name="mydetail" classname="cn.cloud.ant.DetailTask"/>
    </antlib>

四：编写ant脚本build.xnl

<?xml version="1.0" encoding="UTF-8"?>
    
    <project name="ext_task" basedir="." xmlns:my="xxx" default="message-echo">
    	
    	<property name="base.dir" location="target"></property>
    	<property name="src.dir" location="src"></property>
    	<property name="class.dir" location="${base.dir}/classes"></property>
    	
    	<target name="Introduction">
    		<echo>this is my first ant task</echo>
    		<echo>${basedir}</echo>
    		<echo>this is my first ant task</echo>
    	</target>
    	
    	<target name="clean" depends="Introduction">
    		<delete dir="${base.dir}"></delete>
    	</target>
    	
    	<target name="init" depends="clean">
    		<mkdir dir="${base.dir}"></mkdir>
    		<mkdir dir="${class.dir}"></mkdir>
    	</target>
    	
    	<target name="compile" depends="init">
    		<javac includeantruntime="true" destdir="${class.dir}" srcdir="${src.dir}" target="1.7"></javac>
    		<copy todir="${class.dir}">
    			<fileset dir="${src.dir}">
    				<exclude name="**/*.java"/>
    			</fileset>
    		</copy>
    	</target>
    	
    	<target name="init-task-def" depends="compile">
    		<echo>define .................</echo>
    		<taskdef resource="antlib.xml" uri="xxx">
    			<classpath path="${class.dir}"></classpath>
    		</taskdef>
    	</target>
    
    	<target name="message-echo" depends="init-task-def">
    		<my:mylist />
    		<my:myshow />
    		<my:mydetail />
    	</target>
    	
    </project>