如何让 Microsoft.Playwright 在 azure 应用服务上运行？

Question

问题在于调用 Playwright.CreateAsync() 方法，这只会永远加载。我最初的评估是因为剧作家想要访问浏览器但无法访问，这就是为什么它只是继续加载。我已经调用了playwright的安装api。

Microsoft.Playwright.Program.Main(new[] { "install", "chromium" });

或

Microsoft.Playwright.Program.Main(new[] { "install"});

正是因为这个方法，下一行代码才没有被执行。

 using var playwright = await Playwright.CreateAsync();

这是完整代码

 //_logger.LogInformation("Playwright installing.");
 Microsoft.Playwright.Program.Main(new[] { "install", "chromium" });
 //_logger.LogInformation("Playwright installed.");

 _logger.LogInformation("Playwright launching browser.");
 using var playwright = await Playwright.CreateAsync();
 await using var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions
 {
     Headless = true,
 });
 _logger.LogInformation("Playwright browser launched.");

 await using var context = await browser.NewContextAsync();
 var page = await context.NewPageAsync();
 await page.SetContentAsync(HTMLString);

 // Generate the PDF
 var output = await page.PdfAsync(new PagePdfOptions
 {
     Format = "A4", // or "letter"
     Landscape = false,
     HeaderTemplate = headerTemplate,
     FooterTemplate = footerTemplate,
     DisplayHeaderFooter = true,
     Margin = new Margin { Top = "0.5in", Bottom = "0.5in", Left = "0.5in", Right = "0.5in" },
 });

 return output.ToArray();

我发现的其他信息是，在我的本地计算机中，浏览器二进制文件位于

C:\Users\User\AppData\Local\ms-playwright

并且该路径在服务器上不存在。

Answer 1

在azure中运行

microsoft-playwright-run

on-azure-app-service，我们需要将路径更改为下面

 "PLAYWRIGHT_BROWSERS_PATH", "value": "/home/site/wwwroot/.playwright/ms-playwright"



_logger.LogInformation("Playwright installing.");
Microsoft.Playwright.Program.Main(new[] { "install", "chromium" });
_logger.LogInformation("Playwright installed.");

_logger.LogInformation("Playwright launching browser.");
// Set PLAYWRIGHT_BROWSERS_PATH to the correct location
Environment.SetEnvironmentVariable("PLAYWRIGHT_BROWSERS_PATH", $"{context.FunctionAppDirectory}\\bin\\");

// Create Playwright instance
using var playwright = await Playwright.CreateAsync();

// Launch browser
await using var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions
{
    Headless = true,
});
_logger.LogInformation("Playwright browser launched.");

// Create a new browser context and page
await using var browserContext = await browser.NewContextAsync();
var page = await browserContext.NewPageAsync();

// Set HTML content
string HTMLString = "<html><body><h1>Hello, World!</h1></body></html>";
await page.SetContentAsync(HTMLString);

// Generate the PDF
var output = await page.PdfAsync(new PagePdfOptions
{
    Format = "A4",
    Landscape = false,
    DisplayHeaderFooter = true,
    Margin = new Margin { Top = "0.5in", Bottom = "0.5in", Left = "0.5in", Right = "0.5in" },
});

enter image description here

如果您使用的是azure function我遵循了这个link

使用来自

this

参考git 的IronPdf

using IronPdf;
using IronSoftware.IronPdfConsoleDotNetCoreSamples.Infrastructure;

namespace IronSoftware.IronPdfConsoleFrameworkSamples
{
    public class DigitalSignatures : IExecuteApp
    {
        public string OutputPath { get ; set; }

        public void Run()
        {
            // Install IronPdf with Nuget:  PM> Install-Package IronPdf
      
            //The quickest way to cryptographically sign an existing PDF a digital certificate
            //new IronPdf.PdfSignature("Iron.p12", "123456").SignPdfFile("any.pdf");

            // All done in 1 line of code!
            //Advanced example for more control
            // Step 1. Create a PDF
            IronPdf.HtmlToPdf Renderer = new IronPdf.HtmlToPdf();
            PdfDocument doc = Renderer.RenderHtmlAsPdf("<h1>Testing 2048 bit digital security</h1>");
            // Step 2. Create a Signature.
            // You may create a .pfx or .p12 PDF signing certificate using Adobe Acrobat Reader. 
            // Read: https://helpx.adobe.com/acrobat/using/digital-ids.html
           // var signature = new IronPdf.PdfSignature(@"Inputs\cert123.pfx", "123");
            // Step 3. Optional signing options and a handwritten signature graphic
           // signature.SigningContact = "[email protected]";
           // signature.SigningLocation = "Chicago, USA";
           // signature.SigningReason = "To show how to sign a PDF";
            //signature.LoadSignatureImageFromFile(@"Inputs\logo.png");
            //Step 4. Sign the PDF with the PdfSignature. Multiple signing certificates may be used
           // doc.SignPdfWithDigitalSignature(signature);
            //Step 4. The PDF is not signed until saved to file, steam or byte array.
            doc.SaveAs($@"{OutputPath}\DigitalSignatures.pdf");
        }
    }
}

enter image description here

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