ant脚本和java程序间的互相调用

1、ant脚本调用java程序

1）建立一个java类，继承ant的Task类，重写它的excute()方法

package org.example;

import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Task;
  
public class ExampleTask extends Task {
   private String msg;
  
   // The method executing the task
   public void execute() throws BuildException {
     System.out.println(msg);
   }
   // The setter for the "message" attribute
   public void setMessage(String msg) {
     this.msg = msg;
   }
}

2）ant脚本

<?xml version="1.0"?>
<project name="ExampleTask" default="main" basedir=".">
   <taskdef name="mytask" classname="org.example.ExampleTask">
      <classpath>
        <pathelement location="./classes" />
      </classpath>
   </taskdef>
   <target name="main">
      <mytask message="this is a example." />
   </target>
</project>

 

2、ant脚本调用java程序

1）ant脚本

<?xml version="1.0"?>
<project name="ant4J" default="main" basedir=".">
   <target name="main">
     <echo message="ant file for java " />
   </target>
</project>

2）java

package org.example;
import java.io.File;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.DefaultLogger;
import org.apache.tools.ant.Project;
import org.apache.tools.ant.ProjectHelper;
 
public class AntExample {
   public static void main(String[] args) {
     File buildFile = new File("example.xml");
     Project p = new Project();
     try {
       p.fireBuildStarted();
       p.init();
       ProjectHelper helper = ProjectHelper.getProjectHelper();
       helper.parse(p, buildFile);
       p.executeTarget(p.getDefaultTarget());
       p.fireBuildFinished(null);
   } catch (BuildException e) {
       p.fireBuildFinished(e);
   }
  }
}

3、taskdef

定义一个task，当自定义了一个自己的任务，或者需要引入不是ant自带的任务时，使用这个标签来定义。

 <path id="xdoclet.task.classpath">
     <fileset dir="${xdoclet.home}/lib">
       <include name="**/*.jar"/>
     </fileset>
     <fileset dir="${xdoclet.home}/plugins">
        <include name="**/*.jar"/>
     </fileset>
 </path>

 <taskdef 
    name="xdoclet"
    classname="org.xdoclet.ant.XDocletTask"
    classpathref="xdoclet.task.classpath"
 />