Long image screenshot is incomplete

You more than likely didn't provide nowhere near enough information for the fine people here to help you.... try to imagine that they are not sitting next to you

version? code example? method?

The following is the playwright version and code sample：

com.microsoft.playwright
playwright
1.17.0

public static void main(String[] args) throws Exception {
try (Playwright playwright = Playwright.create()) {
Browser browser = playwright.chromium().launch();
Page page = browser.newPage();
page.addInitScript(Paths.get("./scroll.js"));
Page.NavigateOptions navigateOptions = new Page.NavigateOptions();
navigateOptions.setWaitUntil(WaitUntilState.NETWORKIDLE);
page.navigate("https://www.meipian.cn/3eh6t1fr", navigateOptions);
while (true) {
page.keyboard().down("PageDown");
TimeUnit.MILLISECONDS.sleep(500);
Boolean isBottom = (Boolean) page.evaluate("isBottom()");
if (isBottom) {
TimeUnit.MILLISECONDS.sleep(500);
break;
}
}
page.evaluate("scrollTop()");

        TimeUnit.MILLISECONDS.sleep(1000);
        Page.ScreenshotOptions screenshotOptions = new Page.ScreenshotOptions();
        screenshotOptions.setFullPage(true);
        byte[] screenshot = page.screenshot(screenshotOptions);
        byte2image(screenshot, "./tmp.jpg");
        System.out.println("over!");
        browser.close();
    }
}