node -v
npm -v

npm config set registry https://registry.npmmirror.com

npm install puppeteer

const puppeteer = require('puppeteer');
// 獲取java傳過(guò)來(lái)的參數(shù)
const url = process.argv[2];
(async () => {
    const browser = await puppeteer.launch();
    const page = await browser.newPage();
    // 設(shè)置視口大小
    await page.setViewport({
        width: 1920,
        height: 1080,
        deviceScaleFactor: 2, // 像素比，默認(rèn)為 1。在高 DPI 屏幕上，可以將其設(shè)置為 2 或更高，以模擬高分辨率顯示。
    });
    await page.goto(url);
    const screenshotBuffer = await page.screenshot({
        fullPage: true;//是否截全屏
    });
    // 輸出截圖的 Buffer 到標(biāo)準(zhǔn)輸出流
    process.stdout.write(screenshotBuffer);
    await browser.close();
})();

node screenshot.js https://www.baidu.com/

package com.assoft.erms.common.utils;
import java.io.ByteArrayOutputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
public class ScreenshotUtil {
    public static void main(String[] args) {
        //js腳本文件地址
        String screenshotJs = "D:\\workspace\\javascript\\screenshot.js";
        //要截圖的網(wǎng)頁(yè)（有攔截器，需要驗(yàn)證身份的不行）
        String url = "http://politics.people.com.cn/n1/2024/1031/c1024-40350705.html";
        //保存的文件名
        String filePath = "screenshot.png";
        try {
            //兩種返回類(lèi)型，邏輯是一樣的；只是返回類(lèi)型不同 根據(jù)情況自行選擇
            // 模式一：獲取截圖的字節(jié)數(shù)組
            byte[] screenshotBytes = ScreenshotUtil.captureScreenshotAsBytes(url,screenshotJs);
            System.out.println("屏幕截圖字節(jié)數(shù)組長(zhǎng)度: " + screenshotBytes.length);
            // 模式二：將截圖保存到指定路徑
            ScreenshotUtil.captureScreenshotAsFile(url, filePath,screenshotJs);
            System.out.println("屏幕截圖已保存到: " + filePath);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    /**
     * 獲取網(wǎng)頁(yè)截圖的字節(jié)數(shù)組
     * @param url
     * @return
     * @throws Exception
     */
    public static byte[] captureScreenshotAsBytes(String url,String screenshotJs) throws Exception {
        Process process = Runtime.getRuntime().exec(new String[]{"node", screenshotJs, url});
        // 獲取 Process 的輸入流
        try (InputStream inputStream = process.getInputStream();
             ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream()) {
            byte[] buffer = new byte[1024];
            int length;
            while ((length = inputStream.read(buffer)) != -1) {
                byteArrayOutputStream.write(buffer, 0, length);
            }
            process.waitFor(); // 等待進(jìn)程結(jié)束
            return byteArrayOutputStream.toByteArray(); // 返回字節(jié)數(shù)組
        }
    }
    /**
     * 將網(wǎng)頁(yè)截圖保存到指定路徑
     * @param url
     * @param filePath
     * @throws Exception
     */
    public static void captureScreenshotAsFile(String url, String filePath,String screenshotJs) throws Exception {
        byte[] screenshotBytes = captureScreenshotAsBytes(url,screenshotJs); // 獲取截圖字節(jié)數(shù)組
        // 將字節(jié)數(shù)組寫(xiě)入文件
        try (FileOutputStream fileOutputStream = new FileOutputStream(filePath)) {
            fileOutputStream.write(screenshotBytes);
        }
    }
}

|-- node_modules
|-- screenshot.js

|-- node_modules
|-- js
	|-- screenshot.js

|-- screenshot.js
|-- static
	|-- node_modules