Phantomjs 浏览器 element.getText() 为空 [英] Phantomjs browser element.getText() is empty

问题描述

我有一个简单的测试，它将 element.getText() 值打印到控制台.如果我使用 ChromeDriver 运行代码，它可以正常工作.元素可见，我也在等待元素可见，并且在 getText() 调用之前测试了 element.isDisplayed() .但是如果我用 Phantomjs 驱动程序运行它， getText() 的结果是一个空字符串.代码如下:

I have a simple test which prints element.getText() value to console. If I run the code with ChromeDriver it works without any problem. Element is visible also I am waiting till element is visible and also I test the element.isDisplayed() before the getText() call. But if I run it with Phantomjs driver the result of getText() is an empty string. Here is the code:

public void test() throws InterruptedException {
    openPage();

    WebElement header = driver.findElement(By.id("header"));

    new WebDriverWait(driver, 5).until(ExpectedConditions.visibilityOf(header));

    System.out.println(header.isDisplayed());
    System.out.println(header.getText());
}

这个元素有一个 CSS 转换.

There is a CSS transform on this element.

这是网页 https://tatrytec.eu/，它是 Tatrytec 的主要标题.欧盟

This is the web page https://tatrytec.eu/, and it is the main header Tatrytec.eu

谁能告诉我问题出在哪里?

Can anybody tell me please where could be the problem?

推荐答案

https://phantomjs.org/，该项目现已暂停.chrome 和 phantom 使用不同的渲染引擎，所以现在使用 phantomjs 没有意义，改用 chrome headless

https://phantomjs.org/ , this project is suspended as of now. chrome and phantom uses different rendering enginees so it doesn't make sense to use phantomjs now, use chrome headless instead

https://www.chromium.org/blink

以前像phantomjs这样的无头浏览器曾经使用webkit渲染引擎，但现在chrome内置了无头支持并使用相同的渲染引擎blink

Previously headless browsers like phantomjs used to use webkit rendering engine but now chrome has inbuild headless support and uses same rendering enginee blink

https://developers.google.com/web/updates/2017/04/headless-chrome#:~:text=Headless%20Chrome%20is%20similar%20to，%20latest%20version%20of%20Blink.

另请注意，w3c 对于非无头 chrome 是默认开启的，但对于无头 chrome 是错误的并且使用 JSONwire 协议，这不会影响测试质量，但仅供参考

Also note w3c is on by default for non headless chrome but for headless chrome it is false and use JSONwire protocol , that doesn't affect quality of test but just for your information

https://stackoverflow.com/a/65841695/6793637

截至 2021 年 2 月

As of Feb , 2021

https://bugs.chromium.org/p/chromedriver/issues/detail?id=1925

Headless chrome 不支持首选项设置

Headless chrome doesn't support preferrences setting

您可以将无头铬用作:

   ChromeOptions options = new ChromeOptions();
    options.addArguments("headless");
    options.addArguments("window-size=1400,800");       
    options.addArguments("disable-gpu")
    //options.addArguments("--headless", "--disable-gpu", "--window-size=1400,800","--ignore-certificate-errors");
    WebDriver driver = new ChromeDriver(options); 

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