Java ProcessBuilder找不到指定的文件 [英] Java ProcessBuilder Cannot Find File Specified

问题描述

import java.io.*;
class RunTest {
public static void main(String a[]) {
    try {
        String prg = "import sys\nprint int(sys.argv[1])+int(sys.argv[2])\n";
        BufferedWriter out = new BufferedWriter(new FileWriter("test1.py"));
        out.write(prg);
        int number1 = 1;
        int number2 = 2; 
        ProcessBuilder pb = new ProcessBuilder("python","test1.py",""+number1,""+number2);
        Process p = pb.start();
        BufferedReader in = new BufferedReader(new InputStreamReader(p.getInputStream()));
        int ret = new Integer(in.readLine()).intValue();
        System.out.println("value is : "+ret);
    } catch(Exception e) {
        e.printStackTrace();
    }
}

}

运行此代码(使用Eclipse)时，我得到了堆栈跟踪:

When I run this code (I'm using Eclipse), I get the stack trace:

java.io.IOException:无法运行程序"python":CreateProcess错误= 2，系统找不到指定的文件在java.lang.ProcessBuilder.start(ProcessBuilder.java:1048)在RunTest.main(RunTest.java:11)由以下原因引起:java.io.IOException:CreateProcess错误= 2，系统找不到指定的文件在java.lang.ProcessImpl.create(本机方法)在java.lang.ProcessImpl.(ProcessImpl.java:386)在java.lang.ProcessImpl.start(ProcessImpl.java:137)在java.lang.ProcessBuilder.start(ProcessBuilder.java:1029)...还有1个

java.io.IOException: Cannot run program "python": CreateProcess error=2, The system cannot find the file specified at java.lang.ProcessBuilder.start(ProcessBuilder.java:1048) at RunTest.main(RunTest.java:11) 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.(ProcessImpl.java:386) at java.lang.ProcessImpl.start(ProcessImpl.java:137) at java.lang.ProcessBuilder.start(ProcessBuilder.java:1029) ... 1 more

任何人都不知道为什么以及我能做什么?

Anyone have any idea why and what I can do?

谢谢！

推荐答案

对不起，这可能真的没有帮助，但是不知何故，它才开始起作用.不知道为什么或怎么做，因为我什么都没改变.Eclipse基本上只是随机地自行重启，现在可以正常工作了！抱歉，我无法发布可以帮助他人的解决方案，但是无论如何，感谢您的帮助@MadProgrammer和@Elliott！

Sorry, this is probably really unhelpful, but somehow, it just started working. No idea why or how, because I haven't changed anything. Eclipse basically just restarted itself randomly and now it works! Sorry I couldn't post a solution that will help others, but thanks anyway for your help @MadProgrammer and @Elliott !

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