问题
I tried to automate a scenario, where the condition is that I have to select an option from drop down and then there's another dropown next to it, I have to click one option from next drop to enable to button . I tried with the code but it clicks only the first option,.And showing error as stale Element reference:element is not attached to the page document. Please help. Please let me know if in not very clear.
回答1:
When you select Insurance Test Client then only you get the option Product Insurance, which essentially means the HTML DOM gets changed, which results in StaleElementException. To avoid that, once we select from the first dropdown, we need to induce some wait for the elements of the second dropdown to render in the HTML DOM. Then we will use Select Class to select an option. Try out the following code block:
//Select Channel
Select oSelectChannel = new Select(driver.findElement(By.id("client")));
oSelectChannel.selectByVisibleText("Insurance Test Client");
WebDriverWait wait5 = new WebDriverWait(driver, 10);
wait5.until(ExpectedConditions.elementToBeClickable(By.xpath("xpath_of_a_Category_item")));
//Select Category
Select oSelectCategory = new Select(driver.findElement(By.xpath("//*[@id='category']")));
oSelectCategory.selectByVisibleText("Product Insurance");
来源：https://stackoverflow.com/questions/45056398/selenium-webdriver-stale-element-exception-when-clicking-on-multiple-dropdowns