如何在Selenium WebDriver中使用xPath来获取SVG元素？ [英] How to use xPath in Selenium WebDriver to grab SVG elements?

问题描述

我正在使用Selenium WebDriver （Java版）测试基于 OpenLayers 的API。

I am testing an API, based on OpenLayers, with Selenium WebDriver (Java version).

我想测试一个使用 OpenLayers .Control.ModifyFeature的功能。我想点击绘制的特征（SVG），然后拖动并检查它们是否存在，可见或隐藏。

I want to test a functionality that uses OpenLayers.Control.ModifyFeature. I want to click on drawn features (SVG), drag then and check if they are present, visible or hidden.

我画了一个多边形，我选择了它。见下图：

I have drawn a polygon, and I have selected it. See the image below:

这些SVG元素的HTML位于：

The HTML of these SVG elements is here:

<svg id="OpenLayers_Layer_Vector_161_svgRoot" width="1235" height="495" viewBox="0 0 1235 495" style="display: block;">
    <g id="OpenLayers_Layer_Vector_161_root" transform="" style="visibility: visible;">
        <g id="OpenLayers_Layer_Vector_161_vroot">
            <path id="OpenLayers_Geometry_Polygon_200" d=" M 393.0000000000964,213.9999999999891 486.0000000003338,275.9999999997126 384.00000000036925,284.9999999994434 393.0000000000964,213.9999999999891 z" fill-rule="evenodd" fill="blue" fill-opacity="0.4" stroke="blue" stroke-opacity="1" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" stroke-dasharray="none" pointer-events="visiblePainted" cursor="pointer" />
            <circle id="OpenLayers_Geometry_Point_619" cx="439.50000000021464" cy="244.99999999985084" r="6" fill="#009900" fill-opacity="0.5" stroke="#ee9900" stroke-opacity="1" stroke-width="1" stroke-linecap="round" stroke-linejoin="round" stroke-dasharray="none" pointer-events="visiblePainted" cursor="inherit" />
            <circle id="OpenLayers_Geometry_Point_621" cx="435.00000000035106" cy="280.49999999958163" r="6" fill="#009900" fill-opacity="0.5" stroke="#ee9900" stroke-opacity="1" stroke-width="1" stroke-linecap="round" stroke-linejoin="round" stroke-dasharray="none" pointer-events="visiblePainted" cursor="inherit" />
            <circle id="OpenLayers_Geometry_Point_623" cx="388.50000000023283" cy="249.4999999997126" r="6" fill="#009900" fill-opacity="0.5" stroke="#ee9900" stroke-opacity="1" stroke-width="1" stroke-linecap="round" stroke-linejoin="round" stroke-dasharray="none" pointer-events="visiblePainted" cursor="inherit" />
            <circle id="OpenLayers_Geometry_Point_202" cx="393.0000000000964" cy="213.9999999999891" r="6" fill="#990000" fill-opacity="1" stroke="#ee9900" stroke-opacity="1" stroke-width="1" stroke-linecap="round" stroke-linejoin="round" stroke-dasharray="none" pointer-events="visiblePainted" cursor="inherit" />
            <circle id="OpenLayers_Geometry_Point_203" cx="486.0000000003338" cy="275.9999999997126" r="6" fill="#990000" fill-opacity="1" stroke="#ee9900" stroke-opacity="1" stroke-width="1" stroke-linecap="round" stroke-linejoin="round" stroke-dasharray="none" pointer-events="visiblePainted" cursor="inherit" />
            <circle id="OpenLayers_Geometry_Point_204" cx="384.00000000036925" cy="284.9999999994434" r="6" fill="#990000" fill-opacity="1" stroke="#ee9900" stroke-opacity="1" stroke-width="1" stroke-linecap="round" stroke-linejoin="round" stroke-dasharray="none" pointer-events="visiblePainted" cursor="inherit" />
        </g>
        <g id="OpenLayers_Layer_Vector_161_troot" />
    </g>
</svg>

假设我想选择红点。

我这样做了：

String xpath = "//circle[contains(@id, 'OpenLayers_Geometry_Point') AND fill = '#990000']";
List<WebElement> vertices = driver.findElements(By.xpath(xpath));

但它总是返回一个空列表 [] 。

But it always returns an empty list [].

我在这里做错了什么？有人可以帮帮我吗？

What am I doing wrong here? Could anybody help me, please?

非常感谢。

编辑1 - 功能：verticesAreVisible

在点击操作之前，我想获取元素并检查它们是否可见。我正在使用这个函数。

Before the clicking actions, I want to get the elements and check if they are visible. I am using this function.

public static boolean verticesAreVisible(WebDriver driver, String xpath) {
    List<WebElement> list = driver.findElements(By.xpath(xpath));
    if (list.isEmpty()) {
        return false;
    }
    boolean visible = true;
    for (int i = 0; i < list.size(); i++) {
        visible = visible && list.get(i).isDisplayed();
    }
    return !verticesAreNotVisible(driver) && visible;
}

编辑2 - 纠正xPath

// This solution from Razib is valid if the SVG is on the root note
String xpath = "/*[name()='svg']/*[name()='circle']";
// I changed it so that any descendant is valid "//"
String xpath = "//*[name()='svg']//*[name()='circle']";
// Since I wanted only the red vertices, I added this
String xpath = "//*[name()='svg']//*[name()='circle' and @fill='#990000']";

推荐答案

您可能需要使用带<$的操作c $ c> name Xpath 中的属性。
在XPath中使用它 -

May be you need to use the Actions with name attribute in Xpath. In your XPath use it -

"/*[name()='svg']/*[name()='SVG OBJECT']"  

然后尝试以下代码片段 -

Then try the following code snippet -

WebElement svgObj = driver.findElement(By.xpath(XPATH));
Actions actionBuilder = new Actions(driver);
actionBuilder.click(svgObj).build().perform();

这篇关于如何在Selenium WebDriver中使用xPath来获取SVG元素？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！