javafx如何找到webview中的iframe内容

背景

页面有两个iframe&＃xff0c;iframe的属性都一致&＃xff0c;需要获取第一个iframe&＃xff0c;最终获取到里面的节点内容。注意&＃xff0c;如果通过iframe需要定位到dom元素进行模拟点击&＃xff0c;看是否可以直接通过iframe的src&＃xff0c;直接通过webview浏览器进行加载定位

转化为文本格式

Document doc &＃61; webview.getEngine().getDocument();NodeList bodys &＃61; doc.getElementsByTagName("iframe");int countt&＃61;0;for(int i&＃61;0;i<bodys.getLength();i&＃43;&＃43;){Node bodyitem &＃61; bodys.item(i);NamedNodeMap bodyitemAttribute &＃61; bodyitem.getAttributes();Node itemname &＃61; bodyitemAttribute.getNamedItem("class");if(itemname!&＃61;null){if ("ke-edit-iframe".equals(itemname.getTextContent())){//这步很重要&＃xff0c;将node转换成HTMLIFRAMEELEMENT或者您需要的HTMLINPUTELEMENT等HTMLIFrameElement itemname1 &＃61; (HTMLIFrameElement) bodyitem;Document iframeContentDoc &＃61; itemname1.getContentDocument();Element rootElement &＃61; iframeContentDoc.getDocumentElement();NodeList rootElement &＃61;iframeContentDoc.getDocumentElement().getElementsByTagName("body");//结果System.out.println(rootElement.item(0).getTextContent());}else{System.out.println("not found");}}}


转换为html格式代码打印到console

Document doc &＃61; webview.getEngine().getDocument();NodeList bodys &＃61; doc.getElementsByTagName("iframe");int countt&＃61;0;for(int i&＃61;0;i<bodys.getLength();i&＃43;&＃43;){Node bodyitem &＃61; bodys.item(i);NamedNodeMap bodyitemAttribute &＃61; bodyitem.getAttributes();Node itemname &＃61; bodyitemAttribute.getNamedItem("class");if(itemname!&＃61;null){if ("ke-edit-iframe".equals(itemname.getTextContent()) && (i&＃61;&＃61;0)){HTMLIFrameElement itemname1 &＃61; (HTMLIFrameElement) bodyitem;Document iframeContentDoc &＃61; itemname1.getContentDocument();NodeList rootElement &＃61; iframeContentDoc.getDocumentElement().getElementsByTagName("body");Transformer transformer &＃61; null;try {transformer &＃61; TransformerFactory.newInstance().newTransformer();} catch (TransformerConfigurationException e) {e.printStackTrace();}transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "no");transformer.setOutputProperty(OutputKeys.METHOD, "html");transformer.setOutputProperty(OutputKeys.INDENT, "yes");transformer.setOutputProperty(OutputKeys.ENCODING, "UTF-8");transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "4");try {transformer.transform(new DOMSource(rootElement.item(0)),new StreamResult(new OutputStreamWriter(System.out, "UTF-8")));} catch (TransformerException e) {e.printStackTrace();} catch (UnsupportedEncodingException e) {e.printStackTrace();}rootElement.item(0).setTextContent("cccccccccc");}else{System.out.println("not found");}}}

转换为html格式到字符串

Document doc &＃61; webview.getEngine().getDocument();NodeList bodys &＃61; doc.getElementsByTagName("iframe");int countt&＃61;0;for(int i&＃61;0;i<bodys.getLength();i&＃43;&＃43;){Node bodyitem &＃61; bodys.item(i);NamedNodeMap bodyitemAttribute &＃61; bodyitem.getAttributes();Node itemname &＃61; bodyitemAttribute.getNamedItem("class");if(itemname!&＃61;null){if ("ke-edit-iframe".equals(itemname.getTextContent()) && i&＃61;&＃61;1){HTMLIFrameElement itemname1 &＃61; (HTMLIFrameElement) bodyitem;Document iframeContentDoc &＃61; itemname1.getContentDocument();NodeList rootElement &＃61; iframeContentDoc.getDocumentElement().getElementsByTagName("body");Transformer transformer &＃61; null;try {transformer &＃61; TransformerFactory.newInstance().newTransformer();} catch (TransformerConfigurationException e) {e.printStackTrace();}transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "no");transformer.setOutputProperty(OutputKeys.METHOD, "html");transformer.setOutputProperty(OutputKeys.INDENT, "yes");transformer.setOutputProperty(OutputKeys.ENCODING, "UTF-8");transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "4");ByteArrayOutputStream bos &＃61; new ByteArrayOutputStream();try {transformer.transform(new DOMSource(rootElement.item(0)),new StreamResult(bos));} catch (TransformerException e) {e.printStackTrace();}System.out.println(bos.toString());}else{System.out.println("not found");}}}&＃96;&＃96;&＃96;