迭代嵌入式链接时发生 StaleElementReferenceException

StaleElementReferenceException while iterating over embedded links

在我的网页上,我有一个 link 部分的列表,每个部分都有 link 的详细信息。我正在尝试转到每个部分,然后验证所有 link 都没有损坏。

List<WebElement> sections = driver.findElements(By.xpath("//*[@id='sections']/li/a"));
        System.out.println("sections: " + sections.size());
        sections.forEach(selement -> { 
            selement.click();
            List<WebElement> details = driver.findElements(By.xpath("//*[@id='details']/div/table/tbody/tr/td/table[1]/tbody/tr/td[2]/strong/a"));
            System.out.println("details: " + details.size());
            details.forEach(delement -> {
                url = delement.getAttribute("href");
                try {
                    huc = (HttpURLConnection) new URL(url).openConnection();
                    huc.setRequestMethod("HEAD");
                    huc.connect();
                    respCode = huc.getResponseCode();
                    if(respCode == 404) {
                        System.out.println(url + " link is broken");
                    } else if (respCode == 200) {
                        System.out.println(url + " link is ok");
                    } else {
                        System.out.println(url + " returned code " + respCode);
                    }
                    huc.disconnect();
                } catch (MalformedURLException e) {
                    e.printStackTrace();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            });
            driver.navigate().back();
        });

问题是在检查第一部分的详细信息后,我得到了 StaleElementReferenceException。我猜这是因为在遍历细节并返回后,Selenium 不会将其余部分列表视为当前部分?

我可能会为部分创建一个包含所有 href 的列表,然后遍历该列表以导航到特定部分 link,然后检查详细信息 link。但也许有一些 other/simpler 解决方案?

是的,你是对的,回到主页后。列表元素正在更改,即使相同,它也不会引用相同的元素。 您不能将 for each 用于 first/outer 迭代。您可以按如下方式更改它。还。返回后列表元素应该重新identified/searched。

List<WebElement> sections = driver.findElements(By.xpath("//*[@id='sections']/li/a"));
        System.out.println("sections: " + sections.size());
        for(int i=0;i<sections.size();i++){ 
            WebElement selement = sections.get(i);
            selement.click();
            List<WebElement> details = driver.findElements(By.xpath("//*[@id='details']/div/table/tbody/tr/td/table[1]/tbody/tr/td[2]/strong/a"));
            System.out.println("details: " + details.size());
            details.forEach(delement -> {
                url = delement.getAttribute("href");
                try {
                    huc = (HttpURLConnection) new URL(url).openConnection();
                    huc.setRequestMethod("HEAD");
                    huc.connect();
                    respCode = huc.getResponseCode();
                    if(respCode == 404) {
                        System.out.println(url + " link is broken");
                    } else if (respCode == 200) {
                        System.out.println(url + " link is ok");
                    } else {
                        System.out.println(url + " returned code " + respCode);
                    }
                    huc.disconnect();
                } catch (MalformedURLException e) {
                    e.printStackTrace();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            });
            driver.navigate().back();
            sections = driver.findElements(By.xpath("//*[@id='sections']/li/a"));
        }