你可以运行ProcessBuilder在的背景SwingWorker，如下图所示，得到既输出和一个进度条。
import java.awt.BorderLayout;import java.awt.EventQueue;import java.awt.event.*;import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;import javax.swing.*;public class SwingWorkerExample { private final JLabel statusLabel = new JLabel("Status: ", JLabel.CENTER); private final Jtextarea textarea = new Jtextarea(20, 20); private JButton startButton = new JButton("Start"); private JButton stopButton = new JButton("Stop"); private JProgressBar bar = new JProgressBar(); private BackgroundTask backgroundTask; private final ActionListener buttonActions = new ActionListener() { @Override public void actionPerformed(ActionEvent ae) { JButton source = (JButton) ae.getSource(); if (source == startButton) { textarea.setText(null); startButton.setEnabled(false); stopButton.setEnabled(true); backgroundTask = new BackgroundTask(); backgroundTask.execute(); bar.setIndeterminate(true); } else if (source == stopButton) { backgroundTask.cancel(true); backgroundTask.done(); } } }; private void displayGUI() { Jframe frame = new Jframe("Swing Worker Example"); frame.setDefaultCloseOperation(Jframe.DISPOSE_ON_CLOSE); JPanel panel = new JPanel(); panel.setBorder( BorderFactory.createEmptyBorder(5, 5, 5, 5)); panel.setLayout(new BorderLayout(5, 5)); JScrollPane sp = new JScrollPane(); sp.setBorder(BorderFactory.createTitledBorder("Output: ")); sp.setViewportView(textarea); startButton.addActionListener(buttonActions); stopButton.setEnabled(false); stopButton.addActionListener(buttonActions); JPanel buttonPanel = new JPanel(); buttonPanel.add(startButton); buttonPanel.add(stopButton); buttonPanel.add(bar); panel.add(statusLabel, BorderLayout.PAGE_START); panel.add(sp, BorderLayout.CENTER); panel.add(buttonPanel, BorderLayout.PAGE_END); frame.setContentPane(panel); frame.pack(); frame.setLocationByPlatform(true); frame.setVisible(true); } private class BackgroundTask extends SwingWorker<Integer, String> { private int status; public BackgroundTask() { statusLabel.setText((this.getState()).toString()); } @Override protected Integer doInBackground() { try { ProcessBuilder pb = new ProcessBuilder("ls", "-lR", "/"); pb.redirectErrorStream(true); Process p = pb.start(); String s; BufferedReader stdout = new BufferedReader( new InputStreamReader(p.getInputStream())); while ((s = stdout.readLine()) != null && !isCancelled()) { publish(s); } if (!isCancelled()) { status = p.waitFor(); } p.getInputStream().close(); p.getOutputStream().close(); p.getErrorStream().close(); p.destroy(); } catch (IOException | InterruptedException ex) { ex.printStackTrace(System.err); } return status; } @Override protected void process(java.util.List<String> messages) { statusLabel.setText((this.getState()).toString()); for (String message : messages) { textarea.append(message + "n"); } } @Override protected void done() { statusLabel.setText((this.getState()).toString() + " " + status); stopButton.setEnabled(false); startButton.setEnabled(true); bar.setIndeterminate(false); } } public static void main(String[] args) { EventQueue.invokeLater(new Runnable() { @Override public void run() { new SwingWorkerExample().displayGUI(); } }); }}
