selenium 如何拖动元素

试了一下
action.clickAndHold(source).moveToElement(target).release().perform();

发现并没有生效。以下是用js的方式。

  String script = "function createEvent(typeOfEvent) {" +
                "var event = document.createEvent(\"CustomEvent\");" +
                "event.initCustomEvent(typeOfEvent, true, true, null);" +
                "event.dataTransfer = {" +
                "  data: {}," +
                "  setData: function (type, val) {" +
                "    this.data[type] = val;" +
                "  }," +
                "  getData: function (type) {" +
                "    return this.data[type];" +
                "  }" +
                "};" +
                "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 simulateHTML5DragAndDrop(element, target) {" +
                "var dragStartEvent = createEvent('dragstart');" +
                "dispatchEvent(element, dragStartEvent);" +
                "var dropEvent = createEvent('drop');" +
                "dispatchEvent(target, dropEvent, dragStartEvent.dataTransfer);" +
                "var dragEndEvent = createEvent('dragend');" +
                "dispatchEvent(element, dragEndEvent, dropEvent.dataTransfer);" +
                "}" +
                "var source = arguments[0];" +
                "var target = arguments[1];" +
                "simulateHTML5DragAndDrop(source, target);";

        JavascriptExecutor js = (JavascriptExecutor) WebDriverRunner.getWebDriver();
        js.executeScript(script, source, target);

搞定!!!