java - 导航到不同页面并返回后，我收到 StaleElementReferenceException

Question

导航到不同页面并返回后，我收到 StaleElementReferenceException。我尝试过显式等待，再次重写定位器，但似乎不起作用。任何帮助将不胜感激。

    Select selectElement = new Select(dropdown);
    List<WebElement> allOptions=selectElement.getOptions();
    for (WebElement eachElement : allOptions) {  
        System.out.println(eachElement.getText());
        selectElement.selectByVisibleText(eachElement.getText());
        clickElement(selectThisOption);
        enterOnlinePage().dataEntry;
        changeDistrictPage();
        WaitFunctions.waitForPageLoaded(driver);
        new Select(dropdown);
      //Select selectElement = new Select(dropdown);
        allOptions=selectElement.getOptions();
}

Answer 1

这是完全正确的行为!一旦您导航到任何地方(向前甚至向后)，所有您的 WebElements 现在都已过时。您必须更改循环的逻辑，如下所示:

Select selectElement = new Select(dropdown);
int count = selectElement.getOptions().size();
for (int i = 0; i < count; i++) {  
        // must read the element again every time!
        Select selectElement = new Select(dropdown);
        selectElement.selectByIndex(i);

        // the rest of your code ...
}