Java模拟QQ微信截图功能这只是简单的模拟，功能略显简陋，可供学习参考。QQ截图，点击截图按钮，桌面画面会定住不动，画矩形框截取矩形框内容。若这时你在播放视频你会发现截图时视频画面停止了，但是背景音乐还在继续播放，其实这时只是个障眼法，一张全屏静止图片覆盖了整个电脑屏幕，然后用矩形裁剪静止图片。这里我们使用JFrame，两个类，启动类MainFrame，图片窗口类ImageFrame。代码参考自网络并作些许修改。MainFrame启动类，按钮截全屏并传图片给图片容器ImageFrame显示。import javax.swing.*;import java.awt.*;import java.awt.image.BufferedImage;public class MainFrame extends JFrame { JButton capture; public MainFrame() { capture = new JButton("截图"); Container container = getContentPane(); container.add(capture); setSize(130, 80); setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); setAlwaysOnTop(true);// 居中显示按钮 这里我就不给居中了 直接显示右下角// setLocationRelativeTo(null); setLocation(Toolkit.getDefaultToolkit().getScreenSize().width - 180, Toolkit.getDefaultToolkit().getScreenSize().height - 100); capture.addActionListener(e -> {// 使自己隐藏 setVisible(false);// 截图 Robot robot = null; try { robot = new Robot(); } catch (AWTException awtException) { awtException.printStackTrace(); } Toolkit toolkit = Toolkit.getDefaultToolkit(); int width = toolkit.getScreenSize().width; int height = toolkit.getScreenSize().height; System.out.println(width + "x" + height); BufferedImage capture = robot.createScreenCapture(new Rectangle(width, height)); new ImageFrame(capture);// 截图后显示 setVisible(true); }); setVisible(true); } public static void main(String[] args) { new MainFrame(); }}ImageFrame显示启动类传来的全屏图片，按住鼠标左键拖动绘制矩形，松开鼠标按Enter键保存图片至剪切板，双击鼠标左键保存图片至剪切板并且提示保存至本地的Windows图片文件夹。import javax.imageio.ImageIO;import javax.swing.*;import java.awt.*;import java.awt.datatransfer.DataFlavor;import java.awt.datatransfer.Transferable;import java.awt.datatransfer.UnsupportedFlavorException;import java.awt.event.*;import java.awt.image.BufferedImage;import java.io.File;import java.io.IOException;import java.time.LocalDateTime;import java.time.format.DateTimeFormatter;public class ImageFrame extends JFrame { BufferedImage image; // 记录鼠标坐标 宽高 int x, y; int w, h; boolean flag = false; boolean clickState = false; Graphics graphics; public ImageFrame(BufferedImage image) { this.image = image; Toolkit toolkit = Toolkit.getDefaultToolkit(); Dimension screenSize = toolkit.getScreenSize(); int height = screenSize.height; int width = screenSize.width; setSize(width, height);// 无修饰边框 setUndecorated(true); setVisible(true);// 一旦显示整个面板就绘制图片 repaint(); addKeyListener(new KeyListener() { @Override public void keyTyped(KeyEvent e) { } @Override public void keyPressed(KeyEvent e) { } @Override public void keyReleased(KeyEvent e) { System.out.println(e.getKeyCode());// esc退出 if (e.getKeyCode() == 27) { dispose(); }// Enter键直接复制图片到剪切板 if (e.getKeyCode() == 10) { Robot robot = null; try { robot = new Robot(); BufferedImage screenCapture = robot.createScreenCapture(new Rectangle(x, y, w, h)); setClipboardImage(screenCapture); } catch (AWTException awtException) { awtException.printStackTrace(); } dispose(); } } });// 绘制矩形 注册鼠标监听// 鼠标按下获取开始坐标 鼠标释放时获得终点坐标 addMouseListener(new MouseListener() { @Override public void mouseClicked(MouseEvent e) {// 鼠标双击截图保存到文件 if (flag && e.getClickCount() == 2) {// 保存矩形内截图 try { Robot robot = new Robot(); BufferedImage screenCapture = robot.createScreenCapture(new Rectangle(x, y, w, h)); setClipboardImage(screenCapture); JFileChooser chooser = new JFileChooser(); String dateString = LocalDateTime.now().format(DateTimeFormatter.ofPattern("yyyyMMddHHmmssSSS"));// 截图保存Windows用户文件夹 String imgPath = System.getProperties().getProperty("user.home") + "\\Pictures\\" + dateString + ".jpg"; chooser.setSelectedFile(new File(imgPath)); int xz = chooser.showSaveDialog(null); String absolutePath = null; if (xz == 0) {// 获得用户选择文件 File selectedFile = chooser.getSelectedFile(); absolutePath = selectedFile.getAbsolutePath(); System.out.println(absolutePath); }// 写入图片 if (absolutePath != null) ImageIO.write(screenCapture, "jpeg", new File(absolutePath)); } catch (AWTException | IOException awtException) { awtException.printStackTrace(); } dispose(); } } @Override public void mousePressed(MouseEvent e) { clickState = true; if (!flag) { x = e.getXOnScreen(); y = e.getY(); } } @Override public void mouseReleased(MouseEvent e) { clickState = false; if (!flag) { w = e.getX() - x; h = e.getY() - y; repaint(); flag = true; } } @Override public void mouseEntered(MouseEvent e) { } @Override public void mouseExited(MouseEvent e) { } }); addMouseMotionListener(new MouseMotionListener() { @Override public void mouseDragged(MouseEvent e) { if (clickState) { // 鼠标移动重绘矩形 w = e.getX() - x; h = e.getY() - y; repaint(); } } @Override public void mouseMoved(MouseEvent e) { } }); } public static void main(String[] args) { new ImageFrame(null); } @Override public void paint(Graphics g) { super.paint(g); g.drawImage(image, 0, 0, null); graphics = g; g.drawRect(x, y, w, h); } /** * 设置图片到剪切板 * * @param image */ public static void setClipboardImage(final Image image) { Transferable trans = new Transferable() { @Override public DataFlavor[] getTransferDataFlavors() { return new DataFlavor[]{DataFlavor.imageFlavor}; } @Override public boolean isDataFlavorSupported(DataFlavor flavor) { return DataFlavor.imageFlavor.equals(flavor); } @Override public Object getTransferData(DataFlavor flavor) throws UnsupportedFlavorException, IOException { if (isDataFlavorSupported(flavor)) return image; throw new UnsupportedFlavorException(flavor); } }; Toolkit.getDefaultToolkit().getSystemClipboard().setContents(trans, null); }}

treetable-lay树形表格treeTable实现了layui数据表格的大部分功能，并且在用法上与几乎数据表格一致， 支持懒加载、复选框联动(半选)、拖拽列宽、固定表头等功能。相对于layui标准表格，它多了展开表格行功能。演示地址：https://whvse.gitee.io/treetable-lay/demo/开发文档：https://gitee.com/whvse/treetable-lay/wikis/pageslayui-soul-table一款可以表头筛选，随意拖动列位置的表格控件表头筛选、自定义条件（支持前端筛选、后台筛选介绍请看 三、后台筛选）拖动列调整顺序、隐藏显示列excel导出（根据筛选条件和列顺序导出）子表（表中表、无限层级、子表同样支持前3个功能） 5.拖动行 6.右击快捷菜单 7.合计栏支持固定列 8.双击自适应列宽 9.右侧固定列 列宽拖动改到单元格左侧项目地址：https://gitee.com/saodiyang/layui-soul-table更多组件更多组件可以访问官方第三方组件库：https://fly.layui.com/extend/