C#中PuppeteerSharp库的应用详解

// 使用 PuppeteerSharp 库进行爬取和保存为 PDF 的代码示例
using PuppeteerSharp;
using System;
using System.IO;
using System.Threading.Tasks;

class Program
{
    static async Task Main(string[] args)
    {
        var proxy = new ProxyOptions
        {
            Server = "www.16yun.cn",
            Port = 5445,
            Username = "16QMSOML",
            Password = "280651"
        };

        await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision);
        using var browser = await Puppeteer.LaunchAsync(new LaunchOptions
        {
            Headless = true,
            Args = new[] { $"--proxy-server=http://{proxy.Server}:{proxy.Port}", $"--proxy-auth={proxy.Username}:{proxy.Password}" }
        });
        var page = await browser.NewPageAsync();
        await page.GoToAsync("https://www.example.com");

        // 获取图片数据并保存为PDF的代码逻辑
        // ...

        await browser.CloseAsync();
    }
}

using Newtonsoft.Json;
using System;

public class ImageData
{
    public string Url { get; set; }
    public string Description { get; set;
}

class Program
{
    static void Main()
    {
        string jsonData = @"{
            'url': 'https://example.com/image1.jpg',
            'description': 'Beautiful landscape'
        }";

        ImageData imageData = JsonConvert.DeserializeObject<ImageData>(jsonData);

        Console.WriteLine("Image URL: " + imageData.Url);
        Console.WriteLine("Description: " + imageData.Description);
    }
}

using PuppeteerSharp;
using System;
using System.Threading.Tasks;

class Program
{
    static async Task Main(string[] args)
    {
        await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision);
        using var browser = await Puppeteer.LaunchAsync(new LaunchOptions
        {
            Headless = true
        });
        var page = await browser.NewPageAsync();
        await page.GoToAsync("https://www.example.com");

        // 将图片插入到页面中
        // ...

        // 使用PuppeteerSharp提供的API生成PDF文件
        await page.PdfAsync("output.pdf");

        await browser.CloseAsync();
    }
}