附加文本 WebEngine - JavaFX [英] Append text WebEngine - JavaFX
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问题描述
如何将文本附加到 webengine?我试过这个:
How can I append text to webengine? I tried this:
public TabMessage(String title) {
super(title);
view = new WebView();
engine = view.getEngine();
engine.loadContent("<body></body>");
view.setPrefHeight(240);
}
private void append(String msg){
Document doc = engine.getDocument();
Element el = doc.getElementById("body");
String s = el.getTextContent();
el.setTextContent(s+msg);
}
但是文档是null
推荐答案
您也可以使用 JavaScript 进行追加.
You can also use JavaScript to do the append.
final WebEngine appendEngine = view.getEngine();
btn.setOnAction(new EventHandler<ActionEvent>() {
@Override public void handle(ActionEvent event) {
appendEngine.executeScript(
"document.getElementById('content').appendChild(document.createTextNode('World!'));"
);
}
});
我有时发现使用 jQuery 来操作 DOM 比使用 Java 文档或原生 JavaScript DOM 接口更简单.
I sometimes find it simpler to use jQuery to manipulate the DOM rather than the Java Document or native JavaScript DOM interfaces.
final WebEngine appendEngine = view.getEngine();
btn.setOnAction(new EventHandler<ActionEvent>() {
@Override public void handle(ActionEvent event) {
executejQuery(appendEngine, "$('#content').append('World!');");
}
});
...
private static Object executejQuery(final WebEngine engine, String script) {
return engine.executeScript(
"(function(window, document, version, callback) { "
+ "var j, d;"
+ "var loaded = false;"
+ "if (!(j = window.jQuery) || version > j.fn.jquery || callback(j, loaded)) {"
+ " var script = document.createElement(\"script\");"
+ " script.type = \"text/javascript\";"
+ " script.src = \"http://code.jquery.com/jquery-1.7.2.min.js\";"
+ " script.onload = script.onreadystatechange = function() {"
+ " if (!loaded && (!(d = this.readyState) || d == \"loaded\" || d == \"complete\")) {"
+ " callback((j = window.jQuery).noConflict(1), loaded = true);"
+ " j(script).remove();"
+ " }"
+ " };"
+ " document.documentElement.childNodes[0].appendChild(script) "
+ "} "
+ "})(window, document, \"1.7.2\", function($, jquery_loaded) {" + script + "});"
);
}
无论您使用 Uluk 所拥有的 Java 文档 API，还是使用 JavaScript 或 JQuery API，Uluk 出色答案中的所有其他要点仍然适用.
Whether you use the Java Document API, as Uluk has, or JavaScript or JQuery APIs, all of the other points in Uluk's excellent answer still apply.
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