java截屏2

package com.jieping;

import chrriis.dj.nativeswing.swtimpl.NativeComponent;
import chrriis.dj.nativeswing.swtimpl.NativeInterface;
import chrriis.dj.nativeswing.swtimpl.components.JWebBrowser;
import chrriis.dj.nativeswing.swtimpl.components.WebBrowserAdapter;
import chrriis.dj.nativeswing.swtimpl.components.WebBrowserEvent;

import javax.imageio.ImageIO;
import javax.swing.*;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;

/**
 @author
 @date 2020/9/23 - 16:08
 */
public class jieping2 extends JPanel {
    private static final long serialVersionUID = 1L;

    // 行分隔符
    public final static String LS = System.getProperty("line.separator", "\n");
    // 文件分割符
    public final static String FS = System.getProperty("file.separator", "\\");
    // 以javascript脚本获得网页全屏后大小
    private final static StringBuffer JS_DIMENSION;

    static {
        JS_DIMENSION = new StringBuffer();
        JS_DIMENSION.append("var width = 0;").append(LS);
        JS_DIMENSION.append("var height = 0;").append(LS);
        JS_DIMENSION.append("if(document.documentElement) {").append(LS);
        JS_DIMENSION.append("  width = Math.max(width, document.documentElement.scrollWidth);").append(LS);
        JS_DIMENSION.append("  height = Math.max(height, document.documentElement.scrollHeight);").append(LS);
        JS_DIMENSION.append("}").append(LS);
        JS_DIMENSION.append("if(self.innerWidth) {").append(LS);
        JS_DIMENSION.append("  width = Math.max(width, self.innerWidth);").append(LS);
        JS_DIMENSION.append("  height = Math.max(height, self.innerHeight);").append(LS);
        JS_DIMENSION.append("}").append(LS);
        JS_DIMENSION.append("if(document.body.scrollWidth) {").append(LS);
        JS_DIMENSION.append("  width = Math.max(width, document.body.scrollWidth);").append(LS);
        JS_DIMENSION.append("  height = Math.max(height, document.body.scrollHeight);").append(LS);
        JS_DIMENSION.append("}").append(LS);
        JS_DIMENSION.append("return width + ':' + height;");
    }

    public jieping2(final String url, final String fileName) {
        super(new BorderLayout());
        JPanel webBrowserPanel = new JPanel(new BorderLayout());
        final JWebBrowser webBrowser = new JWebBrowser(null);
        webBrowser.setBarsVisible(false);
        webBrowser.navigate(url);
        webBrowserPanel.add(webBrowser, BorderLayout.CENTER);
        add(webBrowserPanel, BorderLayout.CENTER);
        JPanel panel = new JPanel(new FlowLayout(FlowLayout.CENTER, 4, 4));
        webBrowser.addWebBrowserListener(new WebBrowserAdapter() {
            @Override
            public void loadingProgressChanged(WebBrowserEvent e) {
                // 当加载完毕时
                if (e.getWebBrowser().getLoadingProgress() == 100) {
                    String result = (String) webBrowser.executeJavascriptWithResult(JS_DIMENSION.toString());
                    int index = result == null ? -1 : result.indexOf(":");
                    NativeComponent nativeComponent = webBrowser.getNativeComponent();
                    Dimension originalSize = nativeComponent.getSize();
                    Dimension imageSize = new Dimension(Integer.parseInt(result.substring(0, index)), Integer.parseInt(result.substring(index + 1)));
                    imageSize.width = Math.max(originalSize.width, imageSize.width + 50);
                    imageSize.height = Math.max(originalSize.height, imageSize.height + 50);
                    nativeComponent.setSize(imageSize);
                    BufferedImage image = new BufferedImage(imageSize.width, imageSize.height, BufferedImage.TYPE_INT_RGB);
                    nativeComponent.paintComponent(image);
                    nativeComponent.setSize(originalSize);
                    try {
                        // 输出图像
                        ImageIO.write(image, "PNG", new File(fileName));
                    } catch (IOException ex) {
                        ex.printStackTrace();
                    }
                    // 退出操作
                    System.exit(0);
                }
            }
        });
        add(panel, BorderLayout.SOUTH);
    }

    public static void main(String[] args) {
        NativeInterface.open();
        SwingUtilities.invokeLater(() -> {
            // SWT组件转Swing组件，不初始化父窗体将无法启动webBrowser
            JFrame frame = new JFrame("以DJ组件保存指定网页截图");

            // 实际项目中传入URL参数，根据不同参数截取不同网页快照，保存地址也可以在构造器中多设置一个参数，保存到指定目录
            frame.getContentPane().add(new jieping2("https://www.baidu.com/", "D:/test/test.png"), BorderLayout.CENTER);
            frame.setSize(1024, 1024);

            // 仅初始化，但不显示
            frame.invalidate();
            frame.pack();
            frame.setVisible(false);
        });
        NativeInterface.runEventPump();
    }
}

-------------------------------------------------------------------------
maven:

<dependency>
    <groupId>com.hynnet</groupId>
    <artifactId>DJNativeSwing</artifactId>
    <version>1.0.0</version>
</dependency>
<dependency>
    <groupId>com.hynnet</groupId>
    <artifactId>DJNativeSwing-SWT</artifactId>
    <version>1.0.0</version>
</dependency>
<dependency>
    <groupId>org.eclipse.swt.org.eclipse.swt.win32.win32.x86_64.4.3.swt</groupId>
    <artifactId>org.eclipse.swt.win32.win32.x86_64</artifactId>
    <version>4.3</version>
</dependency>