本文实例总结了常见的java编程实现屏幕截图方法。分享给大家供大家参考，具体如下：
方法一：
import java.awt.Desktop;
import java.awt.Dimension;
import java.awt.Rectangle;
import java.awt.Robot;
import java.awt.Toolkit;
import java.awt.image.BufferedImage;
import java.io.File;
import javax.imageio.ImageIO;
public class CaptureScreen {
public static void captureScreen(String fileName, String folder) throws Exception {
Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
Rectangle screenRectangle = new Rectangle(screenSize);
Robot robot = new Robot();
BufferedImage image = robot.createScreenCapture(screenRectangle);
//保存路径
File screenFile = new File(fileName);
if (!screenFile.exists()) {
screenFile.mkdir();
}
File f = new File(screenFile, folder);
ImageIO.write(image, "png", f);
//自动打开
if (Desktop.isDesktopSupported()
&& Desktop.getDesktop().isSupported(Desktop.Action.OPEN))
Desktop.getDesktop().open(f);
}
public static void main(String[] args) {
try {
captureScreen("e:\\你好","11.png");
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
方法二：
package com.qiu.util;
import java.io.*;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.image.*;
import javax.imageio.*;
/**
* 一个简单的屏幕抓图
*
**/
public class ScreenCapture {
// test main
public static void main(String[] args) throws Exception {
String userdir = System.getProperty("user.dir");
File tempFile = new File("d:", "temp.png");
ScreenCapture capture = ScreenCapture.getInstance();
capture.captureImage();
JFrame frame = new JFrame();
JPanel panel = new JPanel();
panel.setLayout(new BorderLayout());
JLabel imagebox = new JLabel();
panel.add(BorderLayout.CENTER, imagebox);
imagebox.setIcon(capture.getPickedIcon());
capture.saveToFile(tempFile);
capture.captureImage();
imagebox.setIcon(capture.getPickedIcon());
frame.setContentPane(panel);
frame.setSize(400, 300);
frame.show();
System.out.println("Over");
}
private ScreenCapture() {
try {
robot = new Robot();
} catch (AWTException e) {
System.err.println("Internal Error: " + e);
e.printStackTrace();
}
JPanel cp = (JPanel) dialog.getContentPane();
cp.setLayout(new BorderLayout());
labFullScreenImage.addMouseListener(new MouseAdapter() {
public void mouseReleased(MouseEvent evn) {
isFirstPoint = true;
pickedImage = fullScreenImage.getSubimage(recX, recY, recW,
recH);
dialog.setVisible(false);
}
});
labFullScreenImage.addMouseMotionListener(new MouseMotionAdapter() {
public void mouseDragged(MouseEvent evn) {
if (isFirstPoint) {
x1 = evn.getX();
y1 = evn.getY();
isFirstPoint = false;
} else {
x2 = evn.getX();
y2 = evn.getY();
int maxX = Math.max(x1, x2);
int maxY = Math.max(y1, y2);
int minX = Math.min(x1, x2);
int minY = Math.min(y1, y2);
recX = minX;
recY = minY;
recW = maxX - minX;
recH = maxY - minY;
labFullScreenImage.drawRectangle(recX, recY, recW, recH);
}
}
public void mouseMoved(MouseEvent e) {
labFullScreenImage.drawCross(e.getX(), e.getY());
}
});
cp.add(BorderLayout.CENTER, labFullScreenImage);
dialog.setCursor(Cursor.getPredefinedCursor(Cursor.CROSSHAIR_CURSOR));
dialog.setAlwaysOnTop(true);
dialog.setMaximumSize(Toolkit.getDefaultToolkit().getScreenSize());
dialog.setUndecorated(true);
dialog.setSize(dialog.getMaximumSize());
dialog.setModal(true);
}
// Singleton Pattern
public static ScreenCapture getInstance() {
return defaultCapturer;
}
/** 捕捉全屏慕 */
public Icon captureFullScreen() {
fullScreenImage = robot.createScreenCapture(new Rectangle(Toolkit
.getDefaultToolkit().getScreenSize()));
ImageIcon icon = new ImageIcon(fullScreenImage);
return icon;
}
/** 捕捉屏幕的一个矫形区域 */
public void captureImage() {
fullScreenImage = robot.createScreenCapture(new Rectangle(Toolkit
.getDefaultToolkit().getScreenSize()));
ImageIcon icon = new ImageIcon(fullScreenImage);
labFullScreenImage.setIcon(icon);
dialog.setVisible(true);
}
/** 得到捕捉后的BufferedImage */
public BufferedImage getPickedImage() {
return pickedImage;
}
/** 得到捕捉后的Icon */
public ImageIcon getPickedIcon() {
return new ImageIcon(getPickedImage());
}
/**
* 储存为一个文件,为PNG格式
*
* @deprecated replaced by saveAsPNG(File file)
**/
@Deprecated
public void saveToFile(File file) throws IOException {
ImageIO.write(getPickedImage(), defaultImageFormater, file);
}
/** 储存为一个文件,为PNG格式 */
public void saveAsPNG(File file) throws IOException {
ImageIO.write(getPickedImage(), "png", file);
}
/** 储存为一个JPEG格式图像文件 */
public void saveAsJPEG(File file) throws IOException {
ImageIO.write(getPickedImage(), "JPEG", file);
}
/** 写入一个OutputStream */
public void write(OutputStream out) throws IOException {
ImageIO.write(getPickedImage(), defaultImageFormater, out);
}
// singleton design pattern
private static ScreenCapture defaultCapturer = new ScreenCapture();
private int x1, y1, x2, y2;
private int recX, recY, recH, recW; // 截取的图像
private boolean isFirstPoint = true;
private BackgroundImage labFullScreenImage = new BackgroundImage();
private Robot robot;
private BufferedImage fullScreenImage;
private BufferedImage pickedImage;
private String defaultImageFormater = "png";
private JDialog dialog = new JDialog();
}
/** 显示图片的Label */
class BackgroundImage extends JLabel {
public void paintComponent(Graphics g) {
super.paintComponent(g);
g.drawRect(x, y, w, h);
String area = Integer.toString(w) + " * " + Integer.toString(h);
g.drawString(area, x + (int) w / 2 - 15, y + (int) h / 2);
g.drawLine(lineX, 0, lineX, getHeight());
g.drawLine(0, lineY, getWidth(), lineY);
}
public void drawRectangle(int x, int y, int width, int height) {
this.x = x;
this.y = y;
h = height;
w = width;
repaint();
}
public void drawCross(int x, int y) {
lineX = x;
lineY = y;
repaint();
}
int lineX, lineY;
int x, y, h, w;
}
方法三：
因为有最小化到系统托盘，还是需要一张名为bg.gif作为托盘图标，图片应放在同级目录下，否则会空指针异常。
主要的截屏代码部分是：
Robot ro=new Robot(); Toolkit tk=Toolkit.getDefaultToolkit(); Dimension di=tk.getScreenSize(); Rectangle rec=new Rectangle(0,0,di.width,di.height); BufferedImage bi=ro.createScreenCapture(rec);
(源代码来源于CSDN)
import java.awt.*;
import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.Transferable;
import java.awt.datatransfer.UnsupportedFlavorException;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;
import javax.imageio.*;
import java.awt.image.*;
public class CaptureScreen extends JFrame implements ActionListener{
private JButton start,cancel,saveAll;
private JPanel c;
private BufferedImage get;
private JTabbedPane jtp;//一个放置很多份图片
private int index;//一个一直会递增的索引,用于标认图片
private JRadioButton java,system;//JAVA界面,系统界面
/** Creates a new instance of CaptureScreen */
public CaptureScreen() {
super("屏幕截取软件(第三版)");
try{
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
}catch(Exception exe){
exe.printStackTrace();
}
initWindow();
initOther();
initTrayIcon();
}
private void initOther(){
jtp=new JTabbedPane(JTabbedPane.TOP,JTabbedPane.SCROLL_TAB_LAYOUT);
}
private void initWindow(){
start=new JButton("开始截取");
saveAll=new JButton("保存所有");
cancel=new JButton("退出");
start.addActionListener(this);
saveAll.addActionListener(this);
cancel.addActionListener(this);
JPanel buttonJP=new JPanel();
c=new JPanel(new BorderLayout());
c.setBackground(Color.BLACK);
JLabel jl=new JLabel("屏幕截取",JLabel.CENTER);
jl.setFont(new Font("黑体",Font.BOLD,40));
jl.setForeground(Color.RED);
c.add(jl,BorderLayout.CENTER);
buttonJP.add(start);
buttonJP.add(saveAll);
buttonJP.add(cancel);
buttonJP.setBorder(BorderFactory.createTitledBorder("公共操作区"));
JPanel jp=new JPanel();//放两个单选按钮的面板
jp.add(java=new JRadioButton("java界面"));
jp.add(system=new JRadioButton("系统界面",true));
java.addActionListener(this);
system.addActionListener(this);
jp.setBorder(BorderFactory.createTitledBorder("界面风格"));
ButtonGroup bg=new ButtonGroup();
bg.add(java);
bg.add(system);
JPanel all=new JPanel();
all.add(jp);
all.add(buttonJP);
this.getContentPane().add(c,BorderLayout.CENTER);
this.getContentPane().add(all,BorderLayout.SOUTH);
this.setSize(500,400);
this.setLocationRelativeTo(null);
this.setVisible(true);
this.setAlwaysOnTop(true);
this.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
this.addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent we){
CaptureScreen.this.setVisible(false);
}
});
}
private void initTrayIcon(){
try{
SystemTray st=SystemTray.getSystemTray();
Image im=ImageIO.read(this.getClass().getResource("bg.gif"));
PopupMenu pm=new PopupMenu("弹出菜单");
pm.add(new MenuItem("关于")).addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent ae){
JOptionPane.showMessageDialog(CaptureScreen.this,"关于
在以前的基础上增加了一些常用的功能,
" +
"比如,批量保存,多幅截取,复制到系统粘帖板...
" +
"在使用过程中有任何问题,欢迎联系.
" +
"作者:千里冰封
" +
"QQ:24325142
");
}
});
pm.addSeparator();
pm.add(new MenuItem("显示主窗口")).addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent ae){
CaptureScreen.this.setVisible(true);
}
});
pm.add(new MenuItem("开始截取")).addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent ae){
doStart();
}
});
pm.add(new MenuItem("退出程序")).addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent ae){
System.exit(0);
}
});
TrayIcon ti=new TrayIcon(im,"JAVA屏幕截取",pm);
st.add(ti);
ti.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent ae){
CaptureScreen.this.setVisible(true);
}
});
}catch(Exception exe){
exe.printStackTrace();
}
}
private void updates(){
this.setVisible(true);
if(get!=null){
//如果索引是0,则表示一张图片都没有被加入过,
//则要清除当前的东西,重新把tabpane放进来
if(index==0){
c.removeAll();
c.add(jtp,BorderLayout.CENTER);
}else{//否则的话,直接对tabpane添加面板就可以了
//就什么都不用做了
}
PicPanel pic=new PicPanel(get);
jtp.addTab("图片"+(++index),pic);
jtp.setSelectedComponent(pic);
SwingUtilities.updateComponentTreeUI(c);
}
}
private void doStart(){
try{
this.setVisible(false);
Thread.sleep(500);//睡500毫秒是为了让主窗完全不见
Robot ro=new Robot();
Toolkit tk=Toolkit.getDefaultToolkit();
Dimension di=tk.getScreenSize();
Rectangle rec=new Rectangle(0,0,di.width,di.height);
BufferedImage bi=ro.createScreenCapture(rec);
JFrame jf=new JFrame();
Temp temp=new Temp(jf,bi,di.width,di.height);
jf.getContentPane().add(temp,BorderLayout.CENTER);
jf.setUndecorated(true);
jf.setSize(di);
jf.setVisible(true);
jf.setAlwaysOnTop(true);
} catch(Exception exe){
exe.printStackTrace();
}
}
/**
*公共方法,处理保存所有的图片
*/
public void doSaveAll(){
if(jtp.getTabCount()==0){
JOptionPane.showMessageDialog(this,"图片不能为空!!","错误",JOptionPane.ERROR_MESSAGE);
return;
}
JFileChooser jfc=new JFileChooser(".");
jfc.addChoosableFileFilter(new GIFfilter());
jfc.addChoosableFileFilter(new BMPfilter());
jfc.addChoosableFileFilter(new JPGfilter());
jfc.addChoosableFileFilter(new PNGfilter());
int i=jfc.showSaveDialog(this);
if(i==JFileChooser.APPROVE_OPTION){
File file=jfc.getSelectedFile();
String about="PNG";
String ext=file.toString().toLowerCase();
javax.swing.filechooser.FileFilter ff=jfc.getFileFilter();
if(ff instanceof JPGfilter){
about="JPG";
} else if(ff instanceof PNGfilter){
about="PNG";
}else if(ff instanceof BMPfilter){
about="BMP";
}else if(ff instanceof GIFfilter){
about="GIF";
}
if(ext.endsWith(about.toLowerCase())){
ext=ext.substring(0,ext.lastIndexOf(about.toLowerCase()));
}
//起一个线程去保存这些图片并显示出进度条
new SaveAllThread(ext,about).setVisible(true);
}
}
//专门用来保存所有图片的线程类,它还要显示出保存的进度条
private class SaveAllThread extends JDialog implements Runnable{
private String name;//文件名头部份
private String ext;//文件格式
private JProgressBar jpb;//一个进度条
private JLabel info;// 一个信息显示条
private int allTask,doneTask;//所有任务,已完成任务
public SaveAllThread(String name,String ext){
super(CaptureScreen.this,"保存",true);
this.name=name;
this.ext=ext;
initWindow();
}
private void initWindow(){
jpb=new JProgressBar();
allTask=jtp.getTabCount();
jpb.setMaximum(allTask);
jpb.setMinimum(0);
jpb.setValue(0);
jpb.setStringPainted(true);
setProgressBarString();
info=new JLabel("正在保存到:");
this.getContentPane().setBackground(Color.CYAN);
this.add(info,BorderLayout.NORTH);
this.add(jpb,BorderLayout.SOUTH);
this.setUndecorated(true);
this.setSize(300,100);
this.setLocationRelativeTo(CaptureScreen.this);
new Thread(this).start();
}
private void setProgressBarString(){
jpb.setString(""+doneTask+"/"+allTask);
}
public void run(){
try{
for(int i=0;i正在保存到:
"+f.toString()+"