ant脚本和java程序间的互相调用

1,ant脚本调用java程序
a，建立一个java类，继承ant的Task类：
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;
}
}
b，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>
c,运行ant脚本。

2,java程序调用ant脚本
1，建立一个java类，
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 {

/**
* @param args
*/
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);
}
}
}

b,ant脚本:
<?xml version="1.0"?>
<project name="ant4J" default="main" basedir=".">
<target name="main">
<echo message="ant file for java " />
</target>
</project>
c，运行java程序。