首页 > 解决方案 > IIS 中的 PuppeteerSharp

问题描述

我面临着一个令人讨厌的情况。我们尝试在我们的应用程序中使用 PuppeteerSharp 来生成背景 PDF,虽然它在开发模式下运行良好,但在生产环境中却不起作用。

该应用程序是一个 WebAPI 2.0 站点、.NET4.7.1、Windows 10 机器。我在这两种环境之间看到的主要区别是:

我们使用以下代码:

var launchOptions = new LaunchOptions
{
    DefaultViewport = new ViewPortOptions
    {
        Width = 1920,
        Height = 1080,
        IsLandscape = printOptions.Orientation == PrintOrientation.Landscape
    },
    ExecutablePath = this._chromiumPath,
    Timeout = Timeout,
    TransportFactory = AspNetWebSocketTransport.AspNetTransportFactory
};

var browser = await Puppeteer.LaunchAsync(launchOptions)
    .ConfigureAwait(false);

var page = await browser.NewPageAsync()
    .ConfigureAwait(false);
await page.EmulateMediaTypeAsync(PuppeteerSharp.Media.MediaType.Print)
    .ConfigureAwait(false);

await page.GoToAsync(url, Timeout, new[] { WaitUntilNavigation.Networkidle0 })
    .ConfigureAwait(false);
await page.WaitForTimeoutAsync(2000)
    .ConfigureAwait(false);
var options = new PdfOptions
{
    Width = printOptions.Format == PrintFormat.A4 ? "210mm" : "297mm",
    Height = printOptions.Format == PrintFormat.A4 ? "297mm" : "420mm",
    PrintBackground = true,
    Landscape = printOptions.Orientation == PrintOrientation.Landscape,
    MarginOptions = new PuppeteerSharp.Media.MarginOptions
    {
        Top = ".4in",
        Bottom = ".4in",
        Left = ".4in",
        Right = ".4in"
    }
};
await page.PdfAsync(outputFile, options)
    .ConfigureAwait(false);
return result;

page.GoToAsync永远不会返回,并最终超时。

编辑:

标签: puppeteer-sharp

解决方案


using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions()
{
    Headless = true,
    ExecutablePath = browserFetcher.GetExecutablePath(BrowserFetcher.DefaultRevision)
})

帮我解决了这个问题,AspNetWebSocketTransport 提出了引用问题,似乎不再有用了


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