Java启动python进程

Question

I'm trying to start a python script via java and send the data via socket back to the java program. My problem is that when I start the python script after the SocketServer is created with Runtime.getRuntime().exec("python3 ~/Documents/sensor/sensorADC.py"); no connection is established and no data is transmitted.

But when I start the script manually via CLI, everything works fine.

The timing of the program start shouldn't be the problem, because I already tried different ways and orders.

The java program is a javaFx application. EDIT: tested in Linux

2nd Edit: private void startPythonScript () { try { measureProcess = Runtime.getRuntime().exec("python3 ~/Documents/sensor/sensorADC.py")); } catch (IOException e) { e.printStackTrace(); } } private void startPythonScript () { try { measureProcess = Runtime.getRuntime().exec("python3 ~/Documents/sensor/sensorADC.py")); } catch (IOException e) { e.printStackTrace(); } }

What am I missing?

Thank you in advance

Answer 1

You're close, you can pass an array to the exec method, like this:

String[] cmd = { "python3", "sensorADC.py", "~/Documents/sensor/"};
Runtime.getRuntime().exec(cmd);

and it should work.

Answer 2

I "solved" it. I compiled it with pyinstaller and now it works. Python seems to be the problem here. But I don't know why....

For others I compiled it to an executable with pyinstaller --onefile sensor.py