使用Selenium的单击按钮的正确方法

Question

一段时间以前，我曾问过类似的问题，但在解析网页时仍然遇到错误。场景是系统导航到https://shop.sprouts.com/shop/flyer，并希望提取与每个类别相关的每个特殊商品。当前，当单击类别时，我会在右侧看到一个空白屏幕。 我已经尝试了以下两个选项，但得到的结果相同。

elementLeftHandSideMenu.Click();
iJavaScriptExecutor.ExecuteScript("arguments[0].click();", elementLeftHandSideMenu);

这是一个计时问题吗？我在做什么错了？

using Microsoft.VisualStudio.TestTools.UnitTesting;
using OpenQA.Selenium;
using OpenQA.Selenium.Chrome;
using OpenQA.Selenium.Support.UI;
using System;
using System.IO;
using System.Linq;
using System.Reflection;
using SeleniumExtras.WaitHelpers;
using System.Threading;
using System.Collections.Generic;
using Newtonsoft.Json;

[TestClass]
public class UnitTest1
{
ChromeDriver driver;
WebDriverWait webDriverWait;
[TestInitialize]
public void Startup()
{
  var chromeOptions = new ChromeOptions();
  chromeOptions.AddArguments("--proxy-server='direct://'");
  chromeOptions.AddArguments("--proxy-bypass-list=*");
  chromeOptions.AddArguments("--start-maximized");

  var path = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
  ChromeDriverService chromeDriverService = ChromeDriverService.CreateDefaultService(path);
  driver = new ChromeDriver(chromeDriverService, chromeOptions);
  webDriverWait = new WebDriverWait(driver, TimeSpan.FromSeconds(30));
}
[TestCleanup]
public void CleanUp()
{
  driver.Quit();
}
[TestMethod]
public void GetSproutsWeeklyAdDetails2()
{
  try
  {
    driver.Navigate().GoToUrl("https://shop.sprouts.com/shop/flyer");
  }
  catch (TimeoutException timeoutException)
  {
    driver.Navigate().Refresh();
  }
  var iJavaScriptExecutor = (IJavaScriptExecutor)driver;
  webDriverWait.Until(driver1 => iJavaScriptExecutor.ExecuteScript("return document.readyState").Equals("complete"));

  var elementsLeftHandSideMenu = webDriverWait.Until(ExpectedConditions.VisibilityOfAllElementsLocatedBy(
    By.XPath("//ul[@class='menu sidenav']/li[@class='child']/a")));
  System.Diagnostics.Debug.WriteLine(elementsLeftHandSideMenu.Count);
  var items = new List<Item>();
  foreach (var elementLeftHandSideMenu in elementsLeftHandSideMenu)
  {
    Thread.Sleep(2000);
    try
    {
      elementLeftHandSideMenu.Click();
      //iJavaScriptExecutor.ExecuteScript("arguments[0].click();", elementLeftHandSideMenu);
    }
    catch (Exception exception)
    {
      System.Diagnostics.Debug.WriteLine(exception.ToString());
    }
    //parsing code here does not work as the RHS shows a blank page
    System.Diagnostics.Debug.WriteLine("Exit");
  }
}
}

Answer 1

单击元素似乎没有问题。您的网站似乎有问题。即使我手动单击，它也不是第一次加载。您可以尝试将driver.Navigate().Refresh();从捕获中移出进行尝试，即在页面打开后或第一次单击后刷新页面。我相信它会起作用。

try
  {
    driver.Navigate().GoToUrl("https://shop.sprouts.com/shop/flyer");
    driver.Navigate().Refresh();
  }
  catch (TimeoutException timeoutException)
  {
    driver.Navigate().Refresh();
  }

如果以上代码无效，请尝试-

try
    {
      elementLeftHandSideMenu.Click();
      driver.Navigate().Refresh();
      //iJavaScriptExecutor.ExecuteScript("arguments[0].click();", elementLeftHandSideMenu);
    }