How to run java exec from NodeJs and get return value

Question

I use NodeJs and I want to exec java program and catch the return value from the program - How can I do that?

For example: in NodeJs I got file name as param --> I pass the file name to the java exec program that analyze the file, extract the text and return it.

There is an option to catch the text that the java program return?

take a look at Child process API

Ahmed Magdy
– Ahmed Magdy

2020-06-30 14:51:38 +00:00
Commented Jun 30, 2020 at 14:51 — Ahmed Magdy
– Ahmed Magdy, Commented Jun 30, 2020 at 14:51

Nagate · Accepted Answer · 2020-07-03 05:06:59Z

1

This worked for me when I need execute shell commands using nodejs:

const { exec } = require("child_process");

exec("ls -la", (error, stdout, stderr) => {
    if (error) {
        console.log(`error: ${error.message}`);
        return;
    }
    if (stderr) {
        console.log(`stderr: ${stderr}`);
        return;
    }
    console.log(`stdout: ${stdout}`);
});

stdout variable will have the returned text of command

You just change ls -la to java -version or any other java commands

answered Jul 3, 2020 at 5:06

Nagate

263 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

How to run java exec from NodeJs and get return value

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related