Java에서 Command Line 명령어 실행

Java에서 wkhtmltoimage를 실행시키기 위해 외부 프로그램 실행 샘플 코드를 찾았다.

	import java.io.BufferedReader;
	import java.io.IOException;
	import java.io.InputStream;
	import java.io.InputStreamReader;
	public class RunProgram {
	public static void main(String[] args) {
	Runtime run = Runtime.getRuntime();
	Process p;
	String strCmd = "ipconfig";
	try {
	p = run.exec(strCmd);
	StreamPrintThread errprint = new StreamPrintThread(p.getErrorStream());
	StreamPrintThread okprint = new StreamPrintThread(p.getInputStream());
	p.getOutputStream().close();
	errprint.start();
	okprint.start();
	int rst = p.waitFor();
	if ( 0 == rst) {
	System.out.println("RunProgram success : " + strCmd);
	}
	else {
	System.out.println("RunProgram fail (rst:"+ rst +") : " + strCmd);
	}
	} catch (InterruptedException e) {
	e.printStackTrace();
	} catch (IOException e) {
	e.printStackTrace();
	}
	}
	}
	class StreamPrintThread extends Thread {
	BufferedReader br = null;
	private StreamPrintThread() {}
	public StreamPrintThread(InputStream is) {
	br = new BufferedReader(new InputStreamReader(is));
	}
	void close() {
	try {
	if(br != null)
	br.close();
	}
	catch(Exception e) {
	e.printStackTrace();
	System.out.println(e);
	}
	}
	public void run() {
	try {
	String line = null;
	while((line = br.readLine()) != null) {
	System.out.println(line);
	}
	}
	catch(Exception e) {
	e.printStackTrace();
	System.out.println(e);
	}
	finally {
	close();
	}
	}
	}

view raw RunProgram.java hosted with ❤ by GitHub

해당 코드를 활용해서 명령을 실행하고 정상 실행 여부도 확인할 수 있었다.