为什么我在尝试获取包含每个结果链接的搜索结果面板时会出现此错误

Question

我在尝试用Selenium和C#做这个简单的应用程序时遇到了很多错误

我只想制作一个应用程序(在windows应用程序或控制台应用程序中(，打开浏览器，进入谷歌页面，搜索"；APPLES"；并使用硒得出前5个结果。

这是我正在使用的代码：

IWebDriver driver = new ChromeDriver();
driver.Navigate().GoToUrl("http://google.com");
driver.Manage().Timeouts().ImplicitWait = TimeSpan.FromSeconds(10);
//IWebElement element = driver.FindElement(By.Id("gbqfq"));
driver.FindElement(By.Name("q")).SendKeys("apples");

//element.SendKeys("apples");
// Get the search results panel that contains the link for each result.
IWebElement resultsPanel = driver.FindElement(By.Id("search"));


// Get all the links only contained within the search result panel.
ReadOnlyCollection<IWebElement> searchResults = resultsPanel.FindElements(By.XPath(".//a"));
// Print the text for every link in the search results.
int resultCNT = 1;
foreach (IWebElement result in searchResults)
{
if (resultCNT <= 5)
{
Console.WriteLine(result.Text);
}
else
{
break;
}
resultCNT++;
}

我得到一个错误，它找不到元素搜索：

OpenQA.Selenium.NoSuchElementException: 'no such element: Unable to locate element: {"method":"css selector","selector":"#search"}

Answer 1

这应该可以满足您的需要：

IWebDriver driver = new ChromeDriver();
driver.Navigate().GoToUrl("http://google.com");
driver.Manage().Timeouts().ImplicitWait = TimeSpan.FromSeconds(10);
driver.FindElement(By.Name("q")).SendKeys("apples");

// Click on the Search button
driver.FindElement(By.Name("btnK")).Click();
// Use a Css Selector to go down to the actual element, in this case <a>
var results = driver.FindElements(By.CssSelector("#rso > div > div > div.r > a"));
foreach (var item in results)
{
//Extract the page title and the url from the result
var title = item.FindElement(By.TagName("h3")).Text;
var url = item.GetProperty("href");
Console.WriteLine($"{title} | {url}");
}

简而言之，您出现此错误是因为您没有在页面中搜索正确的元素。