c#使用selenium过滑动验证码

滑动验证码如下：

1、vs引入以下三个包（.net core 3.1）:

2、c#引用：

private void SeleniumVertifyCode(Uri uri)
        {
var options = new OpenQA.Selenium.Chrome.ChromeOptions();
            //不显示浏览器UI窗口
            options.AddArgument("-headless");
            //设置浏览器大小避免无头模式下元素越界异常
            options.AddArgument("--window-size=1920,1050");
            //减少headless模式下日志
            options.AddArgument("log-level=3");
            using IWebDriver driver = new OpenQA.Selenium.Chrome.ChromeDriver(options);
            //先设置uri
            driver.Navigate().GoToUrl(uri);
            var cookie = driver.Manage().Cookies;
            //再添加cookie
            cookie.AddCookie(new Cookie("name", "value", ".com", "/", null));
            //再次访问验证码uri
            driver.Navigate().GoToUrl(uri);
            //反爬：设置windows.navigate.webdrive的值为undefine
            driver.ExecuteJavaScript("Object.defineProperty(navigator, 'webdriver', {get: () => undefined})");
//查看网页源码
//var source = driver.PageSource;
            //找到滑块元素
            var slide = driver.FindElement(By.CssSelector("#nc_1_n1z"));
            var verifyContainer = driver.FindElement(By.CssSelector(".nc-lang-cnt"));
            var width = verifyContainer.Size.Width;
            var action = new Actions(driver);
            //点击并按住滑块元素
            action.ClickAndHold(slide).Perform();
            Random random = new Random();
            int offset = 0;
            //模仿人工滑动
            const int minOffset = 10;
            const int maxOffset = 30;
            while (width > offset)
            {
                offset += random.Next(minOffset, maxOffset);
                action.MoveByOffset(offset, 0).Perform();
                var code = driver.FindElement(By.CssSelector(".nc-lang-cnt")).Text;
                if (code.Contains("验证通过"))
                {
                    break;
                }
                System.Threading.Thread.Sleep(offset * minOffset);
            }
            //点击验证按钮
            action.Click(driver.FindElement(By.CssSelector("#verify"))).Perform();
            //退出webdriver
            driver.Quit();
        }