windows – Apache Ant：终止ant进程终止时的进程

2023年6月9日 321次阅读

我有一个ant任务,它使用< exec>执行冗长的构建操作. Ant由
Windows命令行中的批处理文件启动.如果我通过关闭窗口来终止ant任务,则该过程由< exec>启动.继续跑步.当ant进程本身终止时,如何终止生成的进程？

在带有Oracle JDK 8的Windows 7 x64上使用Ant 1.10.0.启动该过程的任务类似于：

<exec executable="${make.executable}" dir="${compile.dir}" failonerror="true">
    <arg line="${make.parameters}" />
</exec>

关闭命令行窗口时,正确终止运行ant的java进程.

最佳答案 这是一个可能的解决方案：

>批处理脚本使用名为antPidFile的参数启动Ant.
> Ant脚本使用Java jps工具获取运行Ant脚本的java.exe进程的PID.
> Ant脚本将PID写入antPidFile.
> Ant脚本生成子进程.
> Ant退出并控制返回批处理脚本.
>批处理脚本将以前的Ant脚本的PID加载到变量中.
>批处理脚本使用内置的wmic工具来识别Ant生成的进程.
>批处理脚本使用内置的taskkill工具来终止Ant生成的所有子进程(和孙子进程).

build.xml文件

<project name="ant-kill-child-processes" default="run" basedir=".">
    <target name="run">
        <fail unless="antPidFile"/>
        <exec executable="jps">
            <!-- Output the arguments passed to each process's main method. -->
            <arg value="-m"/>
            <redirector output="${antPidFile}">
                <outputfilterchain>
                    <linecontains>
                        <!-- Match the arguments provided to this Ant script. -->
                        <contains value="Launcher -DantPidFile=${antPidFile}"/>
                    </linecontains>
                    <tokenfilter>
                        <!-- The output of the jps command follows the following pattern: -->
                        <!-- lvmid [ [ classname | JARfilename | "Unknown"] [ arg* ] [ jvmarg* ] ] -->
                        <!-- We want the "lvmid" at the beginning of the line. -->
                        <replaceregex pattern="^(\d+).*$" replace="\1"/>
                    </tokenfilter>
                </outputfilterchain>
            </redirector>
        </exec>
        <!-- As a test, spawn notepad. It will persist after this Ant script exits. -->
        <exec executable="notepad" spawn="true"/>
    </target>
</project>

批处理脚本

setlocal

set DeadAntProcessIdFile=ant-pid.txt

call ant "-DantPidFile=%DeadAntProcessIdFile%"

rem The Ant script should have written its PID to DeadAntProcessIdFile.
set /p DeadAntProcessId=< %DeadAntProcessIdFile%

rem Kill any lingering processes created by the Ant script.
for /f "skip=1 usebackq" %%h in (
    `wmic process where "ParentProcessId=%DeadAntProcessId%" get ProcessId ^| findstr .`
) do taskkill /F /T /PID %%h
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