java - StaleElementReferenceException : Element not found in the cache - perhaps the page has changed since it was looked up Command duration or timeout

Question

我收到此异常。请解决它。org.openqa.selenium.StaleElementReferenceException:在缓存中找不到元素 - 也许页面自查找以来已更改命令持续时间或超时:5.10 秒

代码:

 List<WebElement> select_year = driver.findElements(By.xpath("//ul[@class='uib-datepicker-popup dropdown-menu ng-scope']/li/div/table/tbody/tr/td/button/span"));
    for(WebElement ele: select_year)
    {

        String fyear=ele.getText();
        if((syear).equals(fyear))
        {
            System.out.println(syear);
            System.out.println(fyear);
            ele.click();
            List<WebElement>select_month=driver.findElements(By.xpath("//ul[@class='uib-datepicker-popup dropdown-menu ng-scope']/li/div/table/tbody/tr/td/button/span"));
            for(WebElement ele2:select_month)
            {
                String fmonth=ele2.getText();
                if((smonth).equals(fmonth))
                {
                    ele2.click();
                    List<WebElement>select_day=driver.findElements(By.xpath("//ul[@class='uib-datepicker-popup dropdown-menu ng-scope']/li/div/table/tbody/tr/td/button/span"));
                    for(WebElement ele3:select_day)
                    {
                        String fday=ele3.getText();
                        Thread.sleep(3000);
                        if((sday).equals(fday))
                        {
                            ele3.click();

                        }
                    }
                }
            }
        }
    }   

Answer 1

这里不需要循环。您需要找到带有文本的单个元素并选择如下:-

//To select year
driver.findElement(By.xpath("//ul[@class='uib-datepicker-pop‌​up dropdown-menu ng-scope']/li/div/table/tbody/tr/td/button/span[text() = " + syear+"]")).click();

 //To select month
driver.findElement(By.xpath("//ul[@class='uib-datepicker-pop‌​up dropdown-menu ng-scope']/li/div/table/tbody/tr/td/button/span[text() = " + smonth+"]")).click();

//To select day
driver.findElement(By.xpath("//ul[@class='uib-datepicker-pop‌​up dropdown-menu ng-scope']/li/div/table/tbody/tr/td/button/span[text() = " + sday+"]")).click();

编辑:-如果你想在这里循环，你只需要在if条件成立时break循环，如下所示:-

//To select year
List<WebElement> select_year = driver.findElements(By.xpath("//ul[@class='uib-datepicker-popup dropdown-menu ng-scope']/li/div/table/tbody/tr/td/button/span"));
 for(WebElement ele: select_year)
{
    String fyear=ele.getText();
    if((syear).equals(fyear))
    {
        ele.click();
        break;
    }
 }

//To select month 
List<WebElement> select_month = driver.findElements(By.xpath("//ul[@class='uib-datepicker-popup dropdown-menu ng-scope']/li/div/table/tbody/tr/td/button/span"));
 for(WebElement ele: select_year)
{
    String fmonth = ele.getText();
    if((smonth).equals(fmonth))
    {
        ele.click();
        break;
    }
 }

//To select day
List<WebElement> select_day = driver.findElements(By.xpath("//ul[@class='uib-datepicker-popup dropdown-menu ng-scope']/li/div/table/tbody/tr/td/button/span"));
 for(WebElement ele: select_year)
{
    String fday = ele.getText();
    if((sday).equals(fday))
    {
        ele.click();
        break;
    }
 }