WebDriver 打印错误的条件语句答案

【问题标题】：WebDriver prints wrong conditional statementWebDriver 打印错误的条件语句
【发布时间】：2017-03-31 09:09:54
【问题描述】：

我正在学习 WebDriver，只是想查看 demoaut 网站上的链接。循环中的代码应该通过标题识别“建设中”页面，打印出第一行，然后返回基本 url。但由于某种原因，这不会发生。它到达的第一个“正在建设”链接（特色度假目的地）未被识别，提示打印错误的行，然后由于 NoSuchElementException 而不是返回它崩溃，因为它正在寻找错误的链接页。为什么会这样？为什么不根据“建设中”页面的标题进行操作？

import java.util.List;

import java.util.concurrent.TimeUnit;

import org.openqa.selenium.*;
import org.openqa.selenium.firefox.FirefoxDriver;

public class CheckLinks {

public static void main(String[] args) {
    String baseUrl = "http://newtours.demoaut.com/";
    System.setProperty("webdriver.gecko.driver", "C:\\Workspace_e\\geckodriver.exe");
    WebDriver driver = new FirefoxDriver();
    String underConsTitle = "Under Construction: Mercury Tours";
    driver.manage().timeouts().implicitlyWait(10, TimeUnit.SECONDS);

    driver.get(baseUrl);
    List<WebElement> linkElements = driver.findElements(By.tagName("a"));
    String[] linkTexts = new String[linkElements.size()];
    int i = 0;

    //extract the link texts of each link element
    for (WebElement e : linkElements) {
        linkTexts[i] = e.getText();
        i++;
    }

    //test each link
    for (String t : linkTexts) {
        driver.findElement(By.linkText(t)).click();
        if (driver.getTitle().equals(underConsTitle)) {
            System.out.println("\"" + t + "\""
                    + " is under construction.");
        } else {
            System.out.println("\"" + t + "\""
                    + " is working.");
        }
        driver.navigate().back();
    }
    driver.quit();
}

}

【问题讨论】：

标签： java eclipse selenium testing selenium-webdriver

【解决方案1】：

您的代码在我的 Chrome 浏览器中运行良好。您的问题可能是 webdriver 的速度。您可以使用 WebDriverWait，它是对特定元素的显式等待。

试试下面的修改代码

for (String t : linkTexts) {
        WebDriverWait wait = new WebDriverWait(driver, 60);
        wait.until(ExpectedConditions.elementToBeClickable(driver.findElement(By.linkText(t))));
        driver.findElement(By.linkText(t)).click();
        if (driver.getTitle().equals(underConsTitle)) {
            System.out.println("\"" + t + "\""
                    + " is under construction.");
        } else {
            System.out.println("\"" + t + "\""
                    + " is working.");
        }
        try {
            Thread.sleep(2000);
        } catch (InterruptedException e1) {         
            e1.printStackTrace();
        }
        driver.navigate().back();
    }

我可以通过下面的方式退出

"Home" is working.
"Flights" is working.
"Hotels" is under construction.
"Car Rentals" is under construction.
"Cruises" is working.
"Destinations" is under construction.
"Vacations" is under construction.
"SIGN-ON" is working.
"REGISTER" is working.
"SUPPORT" is under construction.
"CONTACT" is under construction.
"your destination" is under construction.
"featured vacation destinations" is under construction.
"Register here" is working.
"Business Travel @ About.com" is working.
"Salon Travel" is working.

【讨论】：

【解决方案2】：

点击第一个链接后，linkTexts 中的所有引用都将失效……即使您返回该页面。您需要做的是将所有的 href 存储在一个 List 中，然后导航到每一个并检查页面的标题。

我会这样写...

public class CheckLinks
{
    public static void main(String[] args) throws UnsupportedFlavorException, IOException
    {
        String firefoxDriverPath = "C:\\Users\\Jeff\\Desktop\\branches\\Selenium\\lib\\geckodriver-v0.11.1-win32\\geckodriver.exe";
        System.setProperty("webdriver.gecko.driver", firefoxDriverPath);
        WebDriver driver = new FirefoxDriver();
        driver.manage().window().maximize();

        String baseUrl = "http://newtours.demoaut.com/";
        driver.get(baseUrl);
        List<WebElement> links = driver.findElements(By.tagName("a"));
        List<String> hrefs = new ArrayList<>();
        for (WebElement link : links)
        {
            hrefs.add(link.getAttribute("href"));
        }
        System.out.println(hrefs.size());
        String underConsTitle = "Under Construction: Mercury Tours";
        for (String href : hrefs)
        {
            driver.get(href);
            System.out.print("\"" + href + "\"");
            if (driver.getTitle().equals(underConsTitle))
            {
                System.out.println(" is under construction.");
            }
            else
            {
                System.out.println(" is working.");
            }
        }
        driver.close();
        driver.quit();
    }
}

【讨论】：

【解决方案3】：

我没有发现你的逻辑有任何问题。事实上我复制了你的代码，只是用 IE 驱动程序替换了 firefox 驱动程序，它按预期工作。下面是我运行代码时得到的控制台输出：

> Home" is working. "Flights" is working. "Hotels" is under
> construction. "Car Rentals" is under construction. "Cruises" is
> working. "Destinations" is under construction. "Vacations" is under
> construction. "SIGN-ON" is working. "REGISTER" is working. "SUPPORT"
> is under construction. "CONTACT" is under construction. "your
> destination" is under construction. "featured vacation destinations"
> is under construction. "Register here" is working. "Business Travel @
> About.com" is working.

【讨论】：