ElementNotVisibleException錯誤

Question

我試圖展開所有評論，回覆，看到更多的評論，看到更多的在崗的Facebook。

1）我已經寫在下面的代碼可以讓我展開我想除了在即使我已經把repliesbutton在一個循環後也許一些回覆的所有內容。

2）將在線程異常「主」 org.openqa.selenium.ElementNotVisibleException：元素是不可見的，所以可能無法與錯誤在。點擊（）互動如果沒有嘗試捕捉所有較小的循環。

//declare WebDriverWait variable, times out after 20 seconds 
    WebDriverWait wait = new WebDriverWait(dr, 20); 

    //check element is present on the DOM of a page and visible 
    wait.until(ExpectedConditions.visibilityOfElementLocated(By.className("commentable_item"))); 
    List<WebElement> comments = dr.findElements(By.className("commentable_item")); //get the comments 

    //iterate through the comments 
    for (WebElement comment : comments) { 
     boolean clickMore = true; 

     try { 
      while(clickMore == true) { 
       //find web elements by their respective class name 
       List<WebElement> commentsbutton = comment.findElements(By.className("UFIPagerLink")); //view more/previous comments 
       List<WebElement> repliesbutton = comment.findElements(By.className("UFIPagerIcon")); //replies 
       List<WebElement> seemorebutton = comment.findElements(By.className("_5v47")); //see more in comment  
       List<WebElement> seemorelinkbutton = dr.findElements(By.className("see_more_link")); //see more in link 

       //click more comments 
       if(commentsbutton.size() > 0) { 
        for (WebElement comments_element : commentsbutton) { 
        //comments_element.click(); //click on button if found 
        //Thread.sleep(5000); //pause for 5 seconds 
         try{      
          comments_element.click(); //click on button if found 
          Thread.sleep(5000); //pause for 5 seconds 
         } catch(Exception e){ 
         }       
        } 

        for (WebElement replies_element : repliesbutton) { 
        //replies_element.click(); //click on button if found 
        //Thread.sleep(3000); //pause for 3 seconds 
         try{ 
          replies_element.click(); //click on button if found 
          Thread.sleep(3000); //pause for 5 seconds 
         } catch(Exception e){ 
         }  
        }  
       } 
       else clickMore = false; 


       for (WebElement seemorelinks_element : seemorelinkbutton) { 
        try{ 
         seemorelinks_element.click(); //click on button if found 
         Thread.sleep(5000); //pause for 5 seconds 
        } catch(Exception e){ 
        } 
       }       

       for (WebElement seemore_element : seemorebutton) { 
        try{ 
         seemore_element.click(); //click on button if found 
         Thread.sleep(5000); //pause for 5 seconds 
        } catch(Exception e){ 
        } 
       } 
      } 
     } catch (NoSuchElementException e) { //when no elements are found 
      System.out.println("Comments in this post not found"); 
     } 
    }  
} 

//return the given element if it is visible and has non-zero size, otherwise null. 
private static WebElement elementIfVisible(WebElement element) { 
    return element.isDisplayed() ? element : null; 
} 

public static ExpectedCondition<WebElement> visibilityOfElementLocated(final By locator) { 
    return new ExpectedCondition<WebElement>() { 
     @Override 
     public WebElement apply(WebDriver driver) { 
      try { 
       return elementIfVisible(dr.findElement(locator)); 
      } catch (StaleElementReferenceException e) { 
      return null; 
      } 
     } 
    }; 
} 

}

Answer 1

您可以創建一個實用的方法，並把它放在一些 'Utility.java' 級類似如下：

public void click(WebElement element) 
    { 
((JavascriptExecutor)driver).executeScript("arguments[0].scrollIntoView(true);", element); 
Thread.sleep(500); 
     if(element.isDisplayed()) 
    element.click(); 
    } 

用法：

WebElement element=driver.findElement(//Locator); 
Utility.click(element); 

這將確保每次單擊元素之前都是scrolledIntoView。 讓我知道你是否需要進一步的幫助。