Java调用bash脚本:权限被拒绝错误 [英] Java calling bash script : Permission Denied Error

问题描述

我正在尝试从Java类中调用bash脚本.

I am trying to call a bash script from a java class .

这是我的Java程序

import java.io.File;

public class RunBuild {
    public static void main(String[] args) {
        File wd = new File("/home/sai/Jan5WS/ATCore/bin/");
        System.out.println("Working Directory: " + wd);
        Process proc = null;
        try {
            proc = Runtime.getRuntime().exec(" . Ram.sh", null, wd);
            System.out.println(proc.getInputStream());
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

我已经拥有该脚本的所有权限，请参见下文sai @ sai-Aspire-4720Z:〜/Jan5WS/ATCore/bin $ chmod 7777 Ram.sh

I have got all the permissions for that script , please see below sai@sai-Aspire-4720Z:~/Jan5WS/ATCore/bin$ chmod 7777 Ram.sh

-rwxrwxrwx 1 sai sai    77 Feb  3 20:53 Ram.sh~
-rwxrwxrwx 1 sai sai    79 Feb  3 20:53 Ram.sh
sai@sai-Aspire-4720Z:~/Jan5WS/ATCore/bin$

将以下异常抛出

Working Directory: /home/sai/Jan5WS/ATCore/bin
java.io.IOException: Cannot run program "." (in directory
"/home/sai/Jan5WS/ATCore/bin"): error=13, Permission denied
    at java.lang.ProcessBuilder.start(Unknown Source)
    at java.lang.Runtime.exec(Unknown Source)
    at java.lang.Runtime.exec(Unknown Source)
    at RunBuild.main(RunBuild.java:12)
Caused by: java.io.IOException: error=13, Permission denied
    at java.lang.UNIXProcess.forkAndExec(Native Method)
    at java.lang.UNIXProcess.<init>(Unknown Source)
    at java.lang.ProcessImpl.start(Unknown Source)
    ... 4 more

我正在使用Ubuntu请让我知道可能是什么问题?

I am using Ubuntu Please let me know what could be the problem ??

推荐答案

查看错误输出-您正在尝试执行." ，它是一个目录，而不是您的shell脚本:

See your error output - you are trying to execute "." which is a directory, not your shell script:

java.io.IOException: Cannot run program "."

用"./" 替换 exec()调用中的." 以指示当前目录，请确保您的脚本具有适当的shebang行，例如#！/bin/bash ，并且该脚本是可执行的(您已经这样做了):

Replace the " . " in your exec() call with "./" to indicate the current directory, make sure that your script has the proper shebang line, like #!/bin/bash, and that it is executable (which you already did):

proc = Runtime.getRuntime().exec("./Ram.sh", null, wd);

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