.NET服务端网页截图

一. 引入PuppeteerSharp nuget包；

二. 服务端网页截图方法

public class WebPageUtil
    {
        /// <summary>
        /// 服务端网页截图
        /// </summary>
        /// <param name="url">网页URL</param>
        /// <param name="sleepSeconds">睡眠秒数:默认两秒，根据网页完整加载所需时间配置</param>
        /// <param name="viewPortOptions">默认生成移动端的430*932格式</param>
        /// <returns></returns>
        public static string WebPageScreenshot(string url,int sleepSeconds=2, ViewPortOptions viewPortOptions = null)
        {
            //初始化浏览器
            var fetcher = new BrowserFetcher().DownloadAsync("127.0.0.1").Result;
            string chromePath = App.Configuration["ChromePath"];
            chromePath = chromePath.IsNullOrEmpty() ? fetcher.GetExecutablePath() : chromePath;
            if (!File.Exists(chromePath))
            {
                throw FriendlyException.JNPFException.Oh($"在服务器上未找到Chrome浏览器\n{chromePath}");
            }
            var browser = Puppeteer.LaunchAsync(new LaunchOptions
            {
                Headless = true,
                ExecutablePath = chromePath,
                DefaultViewport = viewPortOptions ?? new ViewPortOptions { Width = 560, Height = 932, IsMobile = true }
            }).Result;
            // 创建一个页面对象
            var page = browser.NewPageAsync().Result;
            // 导航到指定的URL
            page.GoToAsync(url).Wait();
            //等待加载完成后截屏
            System.Threading.Thread.Sleep(sleepSeconds * 1000);
            //截图 FullPage是全屏
            string savePath = $"{FileVariable.TemporaryFilePath}{DateTime.Now:yyyyMMddHHmmssfff}.png";
            page.ScreenshotAsync(savePath, new ScreenshotOptions() { FullPage = true }).Wait();
            page.CloseAsync().Wait();
            browser.CloseAsync().Wait();
            return savePath;
        }

    }

三. 调用截图方法，返回文件地址文件名

 /// <summary>
        /// Web网页截图
        /// </summary>
        /// <param name="url">网页地址</param>
        /// <param name="sleepSeconds">等待网页完全加载时间(秒)</param>
        /// <param name="width">截图宽度</param>
        /// <param name="height">截图高度</param>
        /// <param name="isMobile">是否移动端网页</param>
        /// <returns></returns>
        public FileControlsModel WebPageScreenshot(string url, int sleepSeconds=2, int width= 1920, int height= 1080, bool isMobile= false)
        {
            string savePath = WebPageUtil.WebPageScreenshot(url,sleepSeconds,new PuppeteerSharp.ViewPortOptions { Width = width, Height = height, IsMobile = isMobile });
            var fileName = _userManager.UserId + "|" + savePath + "|png";
            var output = new FileControlsModel
            {
                fileId= Path.GetFileName(savePath),
                name = Path.GetFileName(savePath),
                url = "/api/File/Download?encryption=" + DESCEncryption.Encrypt(fileName, "JNPF")
            };
            return output;
        }