J2SE实现本地小程序，调起摄像头拍照

package com.xxx.modules.ecamera.util;

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.awt.event.WindowEvent;
import java.awt.event.WindowListener;
import java.awt.image.BufferedImage;
import java.lang.Thread.UncaughtExceptionHandler;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.SwingUtilities;

import com.github.sarxos.webcam.Webcam;
import com.github.sarxos.webcam.WebcamDiscoveryEvent;
import com.github.sarxos.webcam.WebcamDiscoveryListener;
import com.github.sarxos.webcam.WebcamEvent;
import com.github.sarxos.webcam.WebcamListener;
import com.github.sarxos.webcam.WebcamLock;
import com.github.sarxos.webcam.WebcamPanel;
import com.github.sarxos.webcam.WebcamPicker;
import com.github.sarxos.webcam.WebcamResolution;
import com.github.sarxos.webcam.WebcamUtils;
import com.github.sarxos.webcam.util.ImageUtils;
/**
 * J2SE实现开启摄像头拍照功能
 *
 */
public class WebcamViewerUtil extends JFrame implements Runnable, WebcamListener, WindowListener, UncaughtExceptionHandler, ItemListener, WebcamDiscoveryListener {

	private static final long serialVersionUID = 1L;
	
	private Webcam webcam = null;
	private WebcamPanel panel = null;
	private WebcamPicker picker = null;
	//Webcam resolution
	private Dimension webcamResolution = new Dimension(1920, 1080);
	
	//@formatter:off
	private Dimension[] nonStandardResolutions = new Dimension[] {
			WebcamResolution.PAL.getSize(), WebcamResolution.HD.getSize(),
			WebcamResolution.FHDP.getSize(),new Dimension(1920, 1080), };
	public WebcamViewerUtil(){}
	
	@Override
	public void run() {

		Webcam.addDiscoveryListener(this);

		setTitle("Webcam Capture POC");
		//dispose();
		//setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
		setLayout(new BorderLayout());
		addWindowListener(this);
		
		picker = new WebcamPicker();
		picker.addItemListener(this);
		picker.setFont(new Font("宋体",Font.PLAIN,16));
		picker.setSize(new Dimension(800, 40));

		webcam = picker.getSelectedWebcam();
		if (webcam == null) {
			System.err.println("未找到可用的摄像头");
			//抛出异常，线程停止
			int i = 1/0;
			System.out.println("No webcams found...");
			//System.exit(1);
			return ;
		}
		WebcamLock webcamLock = webcam.getLock();
		boolean isLocked = webcamLock.isLocked();
		if(isLocked){
			System.out.println(webcam.getName()+ " 正在开启使用中...");
			int i = 1/0;
			System.out.println(webcam.getName()+ " is being used...");
			return ;
		}
		
		
		webcam.setCustomViewSizes(nonStandardResolutions);
		webcam.setViewSize(webcamResolution.getSize());
		
		//webcam.setViewSize(WebcamResolution.VGA.getSize());
		webcam.addWebcamListener(WebcamViewerUtil.this);
		
		panel = new WebcamPanel(webcam, false);
		panel.setFPSDisplayed(true);
		
		
		final JButton button = new JButton("拍照");
		button.setFont(new Font("宋体",Font.PLAIN,16));
		button.setPreferredSize(new Dimension(400, 40));

		/*final JButton btnCancle=new JButton("Close Camera");
		btnCancle.setFont(new Font("宋体",Font.PLAIN,16));
		btnCancle.setPreferredSize(new Dimension(400, 40));
		
		JPanel jPanel = new JPanel();
		jPanel.setLayout(new FlowLayout());
		jPanel.add(button);
		jPanel.add(btnCancle);*/
		
		
		add(picker, BorderLayout.NORTH);
		add(panel, BorderLayout.CENTER);
		add(button, BorderLayout.SOUTH);
		
		
		button.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				button.setEnabled(false);
				String fileName = "webcam_" + System.currentTimeMillis();
				WebcamUtils.capture(webcam, fileName, ImageUtils.FORMAT_PNG);
				//此处将图片输出到项目根目录下
				byte[] bytes = WebcamUtils.getImageBytes(webcam, ImageUtils.FORMAT_PNG);
				System.out.println("Bytes length: " + bytes.length);
				BufferedImage image = webcam.getImage();
				System.out.println("image = "+image.getWidth() + "x" + image.getHeight());
			
				
				SwingUtilities.invokeLater(new Runnable() {
					@Override
					public void run() {
						JOptionPane.showMessageDialog(null, "拍照成功");
						button.setEnabled(true);
						return;
					}
				});
			}
		});
		
		pack();
		setVisible(true);

		Thread t = new Thread() {
			@Override
			public void run() {
				panel.start();
			}
		};
		t.setName("example-starter");
		t.setDaemon(true);
		t.setUncaughtExceptionHandler(this);
		t.start();
	}
	/**
	 * main 方法调起摄像头
	 * @param args
	 */
	//TODO 
	public static void main(String[] args) {
		SwingUtilities.invokeLater(new WebcamViewerUtil());
	}

	@Override
	public void webcamOpen(WebcamEvent we) {
		System.out.println("webcam open");
	}

	@Override
	public void webcamClosed(WebcamEvent we) {
		System.out.println("webcam closed");
	}

	@Override
	public void webcamDisposed(WebcamEvent we) {
		System.out.println("webcam disposed");
	}

	@Override
	public void webcamImageObtained(WebcamEvent we) {
		// do nothing
	}

	@Override
	public void windowActivated(WindowEvent e) {
	}

	@Override
	public void windowClosed(WindowEvent e) {
		webcam.close();
	}

	@Override
	public void windowClosing(WindowEvent e) {
	}

	@Override
	public void windowOpened(WindowEvent e) {
	}

	@Override
	public void windowDeactivated(WindowEvent e) {
	}

	@Override
	public void windowDeiconified(WindowEvent e) {
		System.out.println("webcam viewer resumed");
		panel.resume();
	}

	@Override
	public void windowIconified(WindowEvent e) {
		System.out.println("webcam viewer paused");
		panel.pause();
	}

	@Override
	public void uncaughtException(Thread t, Throwable e) {
		System.err.println(String.format("Exception in thread %s", t.getName()));
		e.printStackTrace();
	}

	@Override
	public void itemStateChanged(ItemEvent e) {
		if (e.getItem() != webcam) {
			if (webcam != null) {

				panel.stop();

				remove(panel);

				webcam.removeWebcamListener(this);
				//close
				webcam.close();

				webcam = (Webcam) e.getItem();
				
				WebcamLock webcamLock = webcam.getLock();
				boolean isLocked = webcamLock.isLocked();
				if(isLocked){
					System.out.println(webcam.getName()+ " 正在开启使用中...");
					int i = 1/0;
					System.out.println(webcam.getName()+ " is being used...");
					return ;
				}
				
				webcam.setCustomViewSizes(nonStandardResolutions);
				webcam.setViewSize(webcamResolution.getSize());
				webcam.addWebcamListener(this);

				//System.out.println("selected " + webcam.getName());

				panel = new WebcamPanel(webcam, false);
				panel.setFPSDisplayed(true);

				add(panel, BorderLayout.CENTER);
				pack();

				Thread t = new Thread() {
					@Override
					public void run() {
						panel.start();
					}
				};
				t.setName("example-stoper");
				t.setDaemon(true);
				t.setUncaughtExceptionHandler(this);
				t.start();
			}
		}
	}

	@Override
	public void webcamFound(WebcamDiscoveryEvent event) {
		if (picker != null) {
			picker.addItem(event.getWebcam());
		}
	}

	@Override
	public void webcamGone(WebcamDiscoveryEvent event) {
		if (picker != null) {
			picker.removeItem(event.getWebcam());
		}
	}
}

MAVEN 引用

<dependency>
		  <groupId>com.github.sarxos</groupId>
		  <artifactId>webcam-capture</artifactId>
		  <version>0.3.12</version>
</dependency>

注：这是一款github上开源的项目，本人整理一个项目中用到的demo以供大家学习参考。

想了解更多信息，请点击链接 https://github.com/sarxos/webcam-capture

J2SE实现本地小程序，调起摄像头拍照

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