当硒中的下一个循环不存在数据时，如何打破“ while”条件

Question

Here my Issue is I have a vendor lookup and i have to be read the vendors for search reasult.Here results is based on search filter (Ex: vendor name begins with,ends with etc.). Here we don't know the count of vendor search results. I am reding the vendors with while condition with scrolling to next vendor. Here I am unable to break the the while condition when all the vendors are fetched. So please let me give the answer for How to write the proper condition to while loop

try{
    int i=2;
    boolean ele=d.findElement(By.xpath("//table[@id='vendorTable']/tbody/tr["+i+"]/td[1]")).isDisplayed();
    while(ele==true){
        String path="//table[@id='vendorTable']/tbody/tr["+i+"]/td[1]";    // Here i value starts from 2
        String txt=d.findElement(By.xpath(path)).getAttribute("title");
        System.out.println(txt);
        scrollBarHandle("//table[@id='vendorTable']/tbody/tr["+i+"]/td[1]");
        i++;
        ele=d.findElement(By.xpath("//table[@id='vendorTable']/tbody/tr["+i+"]/td[1]")).isDisplayed()
        Thread.sleep(1000);
        }
    }catch(Exception e){
        System.out.println(e.getMessage());
    }

Out put Is: no such element message is displayed After reading all the vednors.

org.openqa.selenium.NoSuchElementException: no such element: Unable to locate element: {"method":"xpath","selector":"//table[@id='vendorTable']/tbody/tr[9]/td[1]"}

How to break the while loop after all the vendors reading completed.

Answer 1

You can first find the no of elements that this selector returns and put an if condition on it : Below is the code :

try{
            int i=2;
            boolean ele=d.findElement(By.xpath("//table[@id='vendorTable']/tbody/tr["+i+"]/td[1]")).isDisplayed();
            while(ele==true){
                String path="//table[@id='vendorTable']/tbody/tr["+i+"]/td[1]";    // Here i value starts from 2
                List<WebElement> elements = driver.findElements(By.xpath(path));
                if (elements.size() == 0) {
                    break;
                }
                String txt=d.findElement(By.xpath(path)).getAttribute("title");
                System.out.println(txt);
                //scrollBarHandle("//table[@id='vendorTable']/tbody/tr["+i+"]/td[1]");
                i++;
                ele=d.findElement(By.xpath("//table[@id='vendorTable']/tbody/tr["+i+"]/td[1]")).isDisplayed()
                        Thread.sleep(1000);
            }
        }catch(Exception e){
            System.out.println(e.getMessage());
        }

Hope it helps you out.