private async void btn_SaveAsImage_Click(object sender, RoutedEventArgs e)
{
//如果这一步发生异常了，可以参考 https://www.cnblogs.com/zhaotianff/p/13528507.html
try
{
await new PuppeteerSharp.BrowserFetcher().DownloadAsync(PuppeteerSharp.BrowserFetcher.DefaultRevision);
var browser = await PuppeteerSharp.Puppeteer.LaunchAsync(new PuppeteerSharp.LaunchOptions
{
Headless = true
});
var page = await browser.NewPageAsync(); //打开一个新标签
await page.GoToAsync(this.tbox_Url.Text); //访问页面
//设置截图选项
PuppeteerSharp.ScreenshotOptions screenshotOptions = new PuppeteerSharp.ScreenshotOptions();
//screenshotOptions.Clip = new PuppeteerSharp.Media.Clip() { Height = 0, Width = 0, X = 0, Y = 0 };//设置截剪区域
screenshotOptions.FullPage = true; //是否截取整个页面
screenshotOptions.OmitBackground = false; //是否使用透明背景，而不是默认白色背景
screenshotOptions.Quality = 100; //截图质量 0-100（png不可用）
screenshotOptions.Type = PuppeteerSharp.ScreenshotType.Jpeg; //截图格式
var fileName = Environment.CurrentDirectory + $"\\download\\{await page.GetTitleAsync()}.jpg";
if (System.IO.File.Exists(fileName))
{
fileName = fileName.Replace(".jpg", $"{DateTime.Now.ToString("ffff")}.jpg");
}
await page.ScreenshotAsync(fileName, screenshotOptions);
if (System.IO.File.Exists(fileName))
{
BitmapImage bi = new BitmapImage();
bi.BeginInit();
bi.UriSource = new Uri(fileName, UriKind.Absolute);
bi.EndInit();
this.image.Source = bi;
}
else
{
EMessageBox.Show("保存网页截图失败");
}
//在最后记得关闭浏览器及释放资源
browser.Disconnect();
browser.Dispose();
}
catch (Exception ex)
{
EMessageBox.Show(ex.Message);
}
}
static async Task SaveHTMLAsJPG(BookingScraper book, string html, string dep)
{
File.WriteAllText($"Schedules/{dep.Replace(" ","_")}_schedule.html", html);
Console.WriteLine($"Completed! Open Schedules/{dep.Replace(" ","_")}_schedule.html to view schedule.");
var schedPage = await book.browser.NewPageAsync();
string dir = Environment.CurrentDirectory.Replace("#", "%23");
await schedPage.GoToAsync($"file://{dir}/Schedules/{dep.Replace(" ","_")}_schedule.html");
var ssop = new PuppeteerSharp.ScreenshotOptions();
ssop.FullPage = true;
await schedPage.ScreenshotAsync($"Schedules/{dep.Replace(" ","_")}_schedule.jpg", ssop);
}
