当使用selenium webdriver自动化脚本时，'.isDisplay()'命令在'if else'语句中不起作

Question

在使用Selenium webdriver自动化脚本时，.isDisplayed()命令在if else语句中不起作用。如果在 if 语句下条件为真，则它工作正常。但是，如果条件不为 true，则代码不会移动到 else 语句。

package module17;
import java.util.concurrent.TimeUnit;
import org.openqa.selenium.By;
import org.openqa.selenium.Keys;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.openqa.selenium.interactions.Actions;
public class Dice {
static WebDriver driver = null;
    public static void main(String[] args) throws InterruptedException {
        System.setProperty("webdriver.chrome.driver", "D:\Automation Software\chromedriver_win32\chromedriver_update.exe");
        driver = new ChromeDriver();
        driver.manage().window().maximize();
        driver.manage().timeouts().implicitlyWait(10, TimeUnit.SECONDS);
        //driver.manage().timeouts().pageLoadTimeout(20, TimeUnit.SECONDS);
        driver.get("http://www.dice.com/");
        Thread.sleep(15000);
        driver.findElement(By.xpath("//*[@alt='Close']")).click();
        driver.findElement(By.xpath("//*[@id='search-field-keyword']")).sendKeys("Selenium WebDriver");
        WebElement Place =driver.findElement(By.xpath("//input[@placeholder='Location']"));
        Place.clear();
        driver.findElement(By.xpath("//button[contains(text(),'Find Tech Jobs')]")).click();
        WebElement PageNumber = driver.findElement(By.xpath("//*[@id='dice_paging_top']//*[contains(text(),'2')]"));
        int i=2;
        while(i<=44)
        {
            try
                {
                    if(driver.findElement(By.xpath("//*[@id='dice_paging_top']//*[contains(text(),'"+i+"')]")).isDisplayed()  )
                        {
                            driver.findElement(By.xpath("//*[@id='dice_paging_top']//*[contains(text(),'"+i+"')]")).click();
                            Thread.sleep(5000);
                            i= i+5;
                        }
                    else if(driver.findElement(By.xpath("//*[@id='dice_paging_top']//a[@title='Go to next page']")).isDisplayed() )
                        {
                            driver.findElement(By.xpath("//*[@id='dice_paging_top']//a[@title='Go to next page']")).click();
                        }
                    else
                        {
                            driver.quit();
                        }
                }  
            catch (Exception e)
                {
                    System.out.println("Exception");
                }
        }   
    }   
}

Answer 1

实际上isDisplayed()工作正常。问题出在您的循环中。在第一个 if 条件下，您用 i+5 递增了值 因此，值 7 在下一次迭代中的 xpath 中不匹配，这就是它在异常中移动的原因。

您需要在尝试捕获块中管理其他条件。替换下面的循环代码并尝试

int i=5;
while(i<=44)
{
    try
    {
        if(driver.findElement(By.xpath("//*[@id='dice_paging_top']//*[contains(text(),'"+i+"')]")).isDisplayed()  )
        {
            driver.findElement(By.xpath("//*[@id='dice_paging_top']//*[contains(text(),'"+i+"')]")).click();
            Thread.sleep(5000);
            i+=5;
        }
     }catch(Exception e)
       {
            try
            {
                 if(driver.findElement(By.xpath("//*[@id='dice_paging_top']//a[@title='Go to next page']")).isDisplayed() )
                 {
                     driver.findElement(By.xpath("//*[@id='dice_paging_top']//a[@title='Go to next page']")).click();
                 }
            }
            catch(Exception e2)
            {
                driver.quit();
           }
     }
}   

Answer 2

在第二次迭代中，I 值设置为 7，在 xpath 中此值为 I，则当前页面上不存在元素。如果页面上不存在该元素，则 drive.findElement 将抛出 NoSuchElementException，因此它根本不会输入到您的 elseif 块中，我相应地修改了您的代码(更新下面的解决方案并最终提供我的解决方案(。

import java.util.concurrent.TimeUnit;
import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.chrome.ChromeDriver;
public class Dice {
static WebDriver driver = null;
public static void main(String[] args) throws InterruptedException {
    System.setProperty("webdriver.chrome.driver", "D:\Automation Software\chromedriver_win32\chromedriver_update.exe");
    driver = new ChromeDriver();
    driver.manage().window().maximize();
    driver.manage().timeouts().implicitlyWait(10, TimeUnit.SECONDS);
    //driver.manage().timeouts().pageLoadTimeout(20, TimeUnit.SECONDS);
    driver.get("http://www.dice.com/");
    Thread.sleep(15000);
    driver.findElement(By.xpath("//*[@alt='Close']")).click();
    driver.findElement(By.xpath("//*[@id='search-field-keyword']")).sendKeys("Selenium WebDriver");
    WebElement Place =driver.findElement(By.xpath("//input[@placeholder='Location']"));
    Place.clear();
    driver.findElement(By.xpath("//button[contains(text(),'Find Tech Jobs')]")).click();
    WebElement PageNumber = driver.findElement(By.xpath("//*[@id='dice_paging_top']//*[contains(text(),'2')]"));
    int i=2;
    while(i<=44)
    {
        try
        {
            if(driver.findElement(By.xpath("//*[@id='dice_paging_top']//*[contains(text(),'"+i+"')]")).isDisplayed()  )
            {
                driver.findElement(By.xpath("//*[@id='dice_paging_top']//*[contains(text(),'"+i+"')]")).click();
                Thread.sleep(5000);
                i+=1;
            }
        }  
        catch (Exception e)
        {
            try{
                if(driver.findElement(By.xpath("//*[@id='dice_paging_top']//a[@title='Go to next page']")).isDisplayed() )
                {
                    driver.findElement(By.xpath("//*[@id='dice_paging_top']//a[@title='Go to next page']")).click();
                    i+=1;
                }
            }
            catch(Exception e1){
                driver.quit();
            }
          }
       }   
      }   
    }

如果您的目标是浏览所有职位，那么下面是我的简短代码。

import java.util.concurrent.TimeUnit;
import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.chrome.ChromeDriver;
public class Dice {
  static WebDriver driver = null;
public static void main(String[] args) throws InterruptedException {
    System.setProperty("webdriver.chrome.driver", "D:\Automation Software\chromedriver_win32\chromedriver_update.exe");
    driver = new ChromeDriver();
    driver.manage().window().maximize();
    driver.manage().timeouts().implicitlyWait(10, TimeUnit.SECONDS);
    driver.get("http://www.dice.com/");
    Thread.sleep(15000);
    driver.findElement(By.xpath("//*[@alt='Close']")).click();
    driver.findElement(By.xpath("//*[@id='search-field-keyword']")).sendKeys("Selenium WebDriver");
    WebElement Place =driver.findElement(By.xpath("//input[@placeholder='Location']"));
    Place.clear();
    driver.findElement(By.xpath("//button[contains(text(),'Find Tech Jobs')]")).click();
    while(true)
    {
        List<WebElement> nextPage = driver.findElements(By.xpath("//*[@id='dice_paging_top']//a[@title='Go to next page']"));
        if(nextPage.size()>0&&nextPage.get(0).isEnabled()){
            nextPage.get(0).click();
        }
        else{
            break;
        }
    }
    driver.quit();
   }   
  }

尝试一下，如果您有任何疑问，请告诉我