为什么在Selenium Webdriver中拖放不起作用？

Question

我试图使用Selenium WebDriver将一个元素拖到另一个元素中，但它不起作用。我尝试了在互联网上找到的所有解决方案，但似乎没有一个对我有效。

WebElement sourceelement = driver.findElement(By.cssSelector("XXX"));
WebElement destelement = driver.findElement(By.cssSelector("YYY"));

代码1：-

Actions builder = new Actions( _controls.getDriver());
builder.dragAndDrop(sourceelement, destelement);

代码2：-

Actions builder = new Actions(_controls.getDriver());
Action dragAndDrop =
builder.clickAndHold(sourceelement).moveToElement(destelement).release(destelement).build();
Thread.sleep(2000);
dragAndDrop.perform()

代码3：-

Point coordinates1 = sourceelement.getLocation();
Point coordinates2 = destelement.getLocation();  
Robot robot = new Robot();           
robot.mouseMove(coordinates1.getX(), coordinates1.getY());
robot.mousePress(InputEvent.BUTTON1_MASK);
robot.mouseMove(coordinates2.getX(), coordinates2.getY());
robot.mouseRelease(InputEvent.BUTTON1_MASK);
Thread.sleep(2000);

代码4：-

final String java_script =
"var src=arguments[0],tgt=arguments[1];var dataTransfer={dropEffe" +
                "ct:'',effectAllowed:'all',files:[],items:{},types:[],setData:fun" +
                "ction(format,data){this.items[format]=data;this.types.append(for" +
                "mat);},getData:function(format){return this.items[format];},clea" +
                "rData:function(format){}};var emit=function(event,target){var ev" +
                "t=document.createEvent('Event');evt.initEvent(event,true,false);" +
                "evt.dataTransfer=dataTransfer;target.dispatchEvent(evt);};emit('" +
                "dragstart',src);emit('dragenter',tgt);emit('dragover',tgt);emit(" +
                "'drop',tgt);emit('dragend',src);";

        ((JavascriptExecutor)_controls.getDriver()).executeScript(java_script, sourceelement, destelement);
        Thread.sleep(2000);

以上代码都不适用于我。以上所有操作都会正常运行，但应用程序中不会发生拖放操作。有没有其他解决办法？谢谢

Answer 1

我也面临同样的问题。请在下面找到用于拖动的自定义java脚本函数

1）创建DragDrop.js文件并在其中粘贴下面的代码

    function customEvent(typeOfEvent) {
    var event = document.createEvent("CustomEvent");
    event.initCustomEvent(typeOfEvent, true, true, null);
    event.dataTransfer = {
        data: {},
        setData: function (key, value) {
            this.data[key] = value;
        },
        getData: function (key) {
            return this.data[key];
        }
    };
    return event;
}
function dispatchEvent(element, event, transferData) {
    if (transferData !== undefined) {
        event.dataTransfer = transferData;
    }
    if (element.dispatchEvent) {
        element.dispatchEvent(event);
    } else if (element.fireEvent) {
        element.fireEvent("on" + event.type, event);
    }
}
function executeDrageAndDrop(element, target) {
    var dragStartEvent = customEvent('dragstart');
    dispatchEvent(element, dragStartEvent);
    var dropEvent = customEvent('drop');
    dispatchEvent(target, dropEvent, dragStartEvent.dataTransfer);
    var dragEndEvent = customEvent('dragend');
    dispatchEvent(element, dragEndEvent, dropEvent.dataTransfer);
}

2） 使用下面的代码，我们可以调用上面的自定义函数（下面是C#代码）

string script = System.IO.File.ReadAllText(@"{filepath of DragDrop.js file}");
script = script + "executeDrageAndDrop(arguments[0], arguments[1])";
IJavaScriptExecutor executor = (IJavaScriptExecutor)driver;

IWebElement source = driver.findElement(By......);
IWebElement target = driver.findElement(By......);

executor.ExecuteScript(script, source, target);

Answer 2

如果已知案例不起作用，您可以尝试此解决方案

        WebElement a = driver.findElement(By.cssSelector("your_selector"));
        WebElement b = driver.findElement(By.cssSelector("your_selector"));

        int x = b.getLocation().x;
        int y = b.getLocation().y;

        Actions actions = new Actions(driver);
        actions.moveToElement(a)
                .pause(Duration.ofSeconds(1))
                .clickAndHold(a)
                .pause(Duration.ofSeconds(1))
                .moveByOffset(x, y)
                .moveToElement(b)
                .moveByOffset(x,y)
                .pause(Duration.ofSeconds(1))
                .release().build().perform();

Answer 3

你能试试Java脚本执行器吗

JavascriptExecutor js = (JavascriptExecutor)driver
js.executeScript("function createEvent(typeOfEvent) {\n" + "var event =document.createEvent(\"CustomEvent\");\n"
                    + "event.initCustomEvent(typeOfEvent,true, true, null);\n" + "event.dataTransfer = {\n" + "data: {},\n"
                    + "setData: function (key, value) {\n" + "this.data[key] = value;\n" + "},\n"
                    + "getData: function (key) {\n" + "return this.data[key];\n" + "}\n" + "};\n" + "return event;\n"
                    + "}\n" + "\n" + "function dispatchEvent(element, event,transferData) {\n"
                    + "if (transferData !== undefined) {\n" + "event.dataTransfer = transferData;\n" + "}\n"
                    + "if (element.dispatchEvent) {\n" + "element.dispatchEvent(event);\n"
                    + "} else if (element.fireEvent) {\n" + "element.fireEvent(\"on\" + event.type, event);\n" + "}\n"
                    + "}\n" + "\n" + "function simulateHTML5DragAndDrop(element, destination) {\n"
                    + "var dragStartEvent =createEvent('dragstart');\n" + "dispatchEvent(element, dragStartEvent);\n"
                    + "var dropEvent = createEvent('drop');\n"
                    + "dispatchEvent(destination, dropEvent,dragStartEvent.dataTransfer);\n"
                    + "var dragEndEvent = createEvent('dragend');\n"
                    + "dispatchEvent(element, dragEndEvent,dropEvent.dataTransfer);\n" + "}\n" + "\n"
                    + "var source = arguments[0];\n" + "var destination = arguments[1];\n"
                    + "simulateHTML5DragAndDrop(source,destination);", ElementFrom, ElementTo);

参考文献：https://www.linkedin.com/pulse/javascriptexecutor-selenium-gaurav-gupta/

它适用于基于角度的Web应用程序。