如何使用ProcessBuilder设置工作目录 [英] How to set working directory with ProcessBuilder

问题描述

我正在尝试在ubuntu的主目录中启动一个进程。我得到一个超出界限的数组异常。以下是代码：

I am trying start a process in my home directory in ubuntu. I am getting an array out of bounds exception. Here is the code:

Process p = null;
ProcessBuilder pb = new ProcessBuilder();
pb.directory(new File("/home"));
p = pb.start();

以下是例外情况：

Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 0
    at java.lang.ProcessBuilder.start(ProcessBuilder.java:459)
    at tester.Main.main(Main.java:31)
Java Result: 1

推荐答案

您正在尝试执行/ home并且它不是可执行文件。 构造函数进程构建器的参数是要执行的命令。

You are trying to execute /home and it is not an executable file. The constructor argument of the process builder is the command to execute.

您想要设置工作目录。你可以通过目录方法。

You want to set the working directory. You can that it via the directory method.

以下是一个完整的示例：

Here is a complete example:

Process p = null;
ProcessBuilder pb = new ProcessBuilder("do_foo.sh");
pb.directory(new File("/home"));
p = pb.start();

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