使用 ProcessBuilder 运行 bash/python 脚本

Question

I want to run a bash script by using ProcessBuilder. This is my xtend code:

new ProcessBuilder().inheritIO().command("/bin/bash", "-c", "./myscript.sh")

This is my bash script:

#!/bin/bash
python WebRoot/result.py

And the python code:

#! /usr/bin/env python
import rospy
from std_msgs.msg import Empty
...

The problem is that I get an error:

Traceback (most recent call last):
  File "WebRoot/result.py", line 2, in <module>
    import rospy
ImportError: No module named rospy

However, when I run the code manually via terminal, it works fine.

Answer 1

When you run it command line, you are probably getting a different environment from when it's running in your JVM. In your bash script, try pointing directly to the python version you intend to use. It's entirely possible that the JVM's env is pointing to a different version of python. Or that the environment is not fully setup.

Try to put the full path, like this, for example:

#!/bin/bash
/usr/bin/python2.7/python WebRoot/result.py