获取 Ant 构建错误:无法运行程序“python" [英] getting Ant build error: Cannot run program "python"

问题描述

这是构建文件:

<exec executable="python" failonerror="true">
  <arg line="${installer.izpack.dir}/utils/wrappers/izpack2exe/izpack2exe.py"/>
  <arg line="--file=${basedir}/installer/EasyIT-installer.jar"/>
  <arg line="--output=${basedir}/installer/EasyIT-installer.exe"/>
  <arg line="--no-upx"/>
</exec>

和输出:

BUILD FAILED
E:\Java Projects\Spark Projects\EastIT - Copy\build\build.xml:873: Execute failed: java.io.IOException: Cannot run program "python" (in directory "E:\Java Projects\Spark Projects\EastIT - Copy"): CreateProcess error=2, The system cannot find the file specified
        at java.lang.ProcessBuilder.start(ProcessBuilder.java:1029)
        at java.lang.Runtime.exec(Runtime.java:615)
        at org.apache.tools.ant.taskdefs.Execute$Java13CommandLauncher.exec(Execute.java:8 62)
        at org.apache.tools.ant.taskdefs.Execute.launch(Execute.java:481)
        at org.apache.tools.ant.taskdefs.Execute.execute(Execute.java:495)
        at org.apache.tools.ant.taskdefs.ExecTask.runExecute(ExecTask.java:631)
        at org.apache.tools.ant.taskdefs.ExecTask.runExec(ExecTask.java:672)
        at org.apache.tools.ant.taskdefs.ExecTask.execute(ExecTask.java:498)
        at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291)
        at sun.reflect.GeneratedMethodAccessor15.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.ja va:43)
        at java.lang.reflect.Method.invoke(Method.java:601)
        at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
        at org.apache.tools.ant.Task.perform(Task.java:348)
        at org.apache.tools.ant.Target.execute(Target.java:392)
        at org.apache.tools.ant.Target.performTasks(Target.java:413)
        at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1399)
        at org.apache.tools.ant.Project.executeTarget(Project.java:1368)
        at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java :41)
        at org.apache.tools.ant.Project.executeTargets(Project.java:1251)
        at org.apache.tools.ant.Main.runBuild(Main.java:811)
        at org.apache.tools.ant.Main.startAnt(Main.java:217)
        at org.apache.tools.ant.launch.Launcher.run(Launcher.java:280)
        at org.apache.tools.ant.launch.Launcher.main(Launcher.java:109)
Caused by: java.io.IOException: CreateProcess error=2, The system cannot find the file specified
        at java.lang.ProcessImpl.create(Native Method)
        at java.lang.ProcessImpl.<init>(ProcessImpl.java:189)
        at java.lang.ProcessImpl.start(ProcessImpl.java:133)
        at java.lang.ProcessBuilder.start(ProcessBuilder.java:1021)
        ... 23 more


Total time: 50 seconds

推荐答案

确保 python 位于您运行构建的 PATH 中，或者指定您的 python 可执行文件的绝对路径exec 任务.

Make sure that python is in the PATH where you're running the build, or specify an absolute path to your python executable in the exec task.

查看 exec 任务 的文档，了解有关使用 Windows 的任何具体说明与非窗口.请注意，那里提到了您的特定错误:

Review the docs for the exec task for any specific instructions on using windows vs. not-windows. Note that your specific error is mentioned there:

一个常见问题是 PATH 上没有可执行文件.如果您收到错误消息无法运行程序...":CreateProcess error=2.该系统找不到指定的路径.看看你的 PATH 变量.只需直接在命令行上键入命令，如果 Windows 找到它，Ant 也应该这样做.(否则请在用户邮件列表上寻求帮助.)如果 Windows 无法执行程序，请将程序目录添加到 PATH(设置 PATH=%PATH%;dirOfProgram)或在构建文件的可执行属性中指定绝对路径.

A common problem is not having the executable on the PATH. In case you get an error message Cannot run program "...":CreateProcess error=2. The system cannot find the path specified. have a look at your PATH variable. Just type the command directly on the command line and if Windows finds it, Ant should do it too. (Otherwise ask on the user mailinglist for help.) If Windows can not execute the program add the directory of the programm to the PATH (set PATH=%PATH%;dirOfProgram) or specify the absolute path in the executable attribute in your buildfile.

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