Selenium Webdriver - 等待页面完全加载Java和JavaScript(ajax / jquery / animation等)

时间:2016-07-12 16:02:03

标签: javascript java jquery ajax selenium

我正在尝试构建一种更好的方法,以便在每次单击后等待页面加载。 我现在使用的是:

    public boolean waitForJSandJQueryToLoad() {
    WebDriverWait wait = new WebDriverWait(webDriver, EnvironmentUtils.getPageLoadTimeout().intValue());
    // wait for jQuery to load
    ExpectedCondition<Boolean> jQueryLoad = new ExpectedCondition<Boolean>() {
        @Override
        public Boolean apply(WebDriver driver) {
            try {
                if (!((Boolean) callJS("return (window.jQuery != null) && (jQuery.active === 0);"))) {
                    log.info("JQUERY.ACTIVE IS WORKING AT THE MOMENT! jQuery.active= " + callJS("return jQuery.active"));
                }
                return (Boolean) callJS("return (window.jQuery != null) && (jQuery.active === 0);");
            } catch (Exception e) {
                // no jQuery present
                return true;
            }
        }
    };
    // wait for Javascript to load
    ExpectedCondition<Boolean> jsLoad = new ExpectedCondition<Boolean>() {
        @Override
        public Boolean apply(WebDriver driver) {
            if (!callJS("return document.readyState").toString().equals("complete")) {
                log.info("document.readyState is not complete at the moment! status is->" + callJS("return document.readyState").toString());
            }
            return callJS("return document.readyState").toString().equals("complete");
        }
    };

    ExpectedCondition<Boolean> animationLoad = new ExpectedCondition<Boolean>() {
        @Override
        public Boolean apply(WebDriver driver) {
            if (!callJS("return $(\":animated\").length").toString().equals("0")) {
                log.info("Animation is currently executing on-page. value ->" + callJS("return $(\":animated\").length").toString());
            }
            return callJS("return $(\":animated\").length").toString().equals("0");
        }
    };

    return wait.until(jQueryLoad) && wait.until(jsLoad) && wait.until(animationLoad);
}

在某些情况下,单击某个按钮并等待表后加载但我运行countRowsInTable方法(通过selenium命令计算表中的行)时,我的测试仍然失败,它会显示零,而实际的视觉效果不是零点,计数行的命令工作正常,如果要检查它,请输入代码:

public int countDisplayedRowsInTable(String tableId) {
    waitForJSandJQueryToLoad();
    int count = 0;
    List<WebElement> rows = webDriver.findElements(By.xpath("//table[@id='" + tableId + "']/tbody/tr"));
    for (WebElement row : rows) {
        if (row.isDisplayed())
            count++;
    }
    return count;
}

我很确定我用waitForJSandJQueryToLoad方法覆盖任何东西,我希望你可以给我一些额外的声明,也许我错过了。 提前谢谢。

1 个答案:

答案 0 :(得分:0)

我认为您可以定义一个显式等待,等待某个条件发生,然后再继续执行代码。

    public int countDisplayedRowsInTable(String tableId) {
        String e = "//table[@id='" + tableId + "']";

        // Wait for the table to load
        WebElement table = (new WebDriverWait(driver, intCustomWait))
          .until(ExpectedConditions.elementToBeClickable(By.xpath(e));

        // Get all the rows from within the table
        List<WebElement> rows = table.findElements(By.xpath("./tbody/tr"));
        if(rows.size() > 0)
        {
            int count = 0;
            for (WebElement row : rows) {
                if (row.isDisplayed())
                count++;
            }
            return count;
        }
        else return -1;
    }