在使用selenium webdriver自動執行腳本時，**。is dispayed（）**命令在** if else語句中不起作用**

Question

使用硒webdriver自動執行腳本時，.is dispayed（）命令不起作用if else語句。 如果if語句的條件爲真，那麼它工作正常。但是如果條件不成立，代碼不會移動到else語句。

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

其實isDisplayed()工作正常。問題在你的循環中。首先，如果條件的值增加了i+5因此，在下一次迭代中，xpath中的值7不匹配，這就是它在Exception中移動的原因。

您需要在try catch塊中管理您的if else條件。下面替換循環代碼，並嘗試

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

在我值設定爲7的第二次迭代，以在XPath中的我此值，元件不存在於當前的page.If元件不存在於頁面上，然後drive.findElement將拋出NoSuchElementException異常所以它不會被輸入到你的elseif塊中，我相應地修改了你的代碼（更新你的解決方案，並最終提供我的解決方案）。

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(); 
      } 
      } 

     } 
     } 
    } 

如果你的目標是通過所有的工作職位，那麼下面是我的縮短代碼。

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(); 
    } 
    } 

嘗試，讓我知道，如果您有任何疑問