ANT配置文件build.xml示例配置文件如下

<?xml version="1.0" encoding="UTF-8"?>

<project name="YourProjectName" default="build" basedir=".">

    <!-- 定义属性 -->
    <property name="src.dir" value="src"/>
    <property name="build.dir" value="build"/>
    <property name="dist.dir" value="dist"/>
    
    <!-- 定义任务 -->
    <target name="init">
        <mkdir dir="${build.dir}"/>
        <mkdir dir="${dist.dir}"/>
    </target>

    <target name="compile" depends="init">
        <javac executable="${src.dir}" destdir="${build.dir}"/>
    </target>

    <target name="build" depends="compile">
        <!-- 这里可以添加其他构建步骤 -->
        <jar destfile="${dist.dir}/YourProject.jar" basedir="${build.dir}">
            <!-- 可以包含需要打包的文件或目录 -->
        </jar>
    </target>

    <target name="clean">
        <delete dir="${build.dir}"/>
        <delete dir="${dist.dir}"/>
    </target>

    <!-- 默认构建目标 -->
    <target name="default" depends="build"/>

</project>

使用脚本修改<target name=compile>中<javac>标签的executable=${java.home}/../bin/javac

#coding=utf8
import sys
import xml.etree.ElementTree as ET

def update_javac_executable(xml_file_path, target_name, new_executable_value):
    #解析xml文件
    tree = ET.parse(xml_file_path)
    root = tree.getroot()

    #找到目标target元素
    target_element = None
    for target in root.iter('target'):
        if target.get('name') = target_name:
            target_element = target
            break
    #如果找到目标target元素
    if target_element is not None:
        #找到目标javac元素
        javac_element = target_element.find('javac')
        #如果找到了目标javac元素
        if javac_element is not None:
            #修改javac元素的executable值
            javac_element.set('executable', new_executable_value)
            #将修改后的数据写回xml文件
            tree.write(xml_file_path)
            print("success update {}".format(xml_file_path))
        else:
            print("Error: No <javac> element found in <target name={}>".format(target_name))
    else:
        print("Error: No <target> element with name={} found".format(target_name))
        
def main():
    path = sys.argv[1:2][0]
    update_javac_executable(path,'compile','${java.home}/../bin/javac')

执行脚本

python modify_xml.py build.xml