org.jsoup.nodes.Comment#org.jsoup.nodes.DataNode源码实例Demo

public void head(Node source, int depth) {
    if (source instanceof Element) {
        Element sourceEl = (Element) source;

        if (whitelist.isSafeTag(sourceEl.tagName())) { // safe, clone and copy safe attrs
            ElementMeta meta = createSafeElement(sourceEl);
            Element destChild = meta.el;
            destination.appendChild(destChild);

            numDiscarded += meta.numAttribsDiscarded;
            destination = destChild;
        } else if (source != root) { // not a safe tag, so don't add. don't count root against discarded.
            numDiscarded++;
        }
    } else if (source instanceof TextNode) {
        TextNode sourceText = (TextNode) source;
        TextNode destText = new TextNode(sourceText.getWholeText());
        destination.appendChild(destText);
    } else if (source instanceof DataNode && whitelist.isSafeTag(source.parent().nodeName())) {
      DataNode sourceData = (DataNode) source;
      DataNode destData = new DataNode(sourceData.getWholeData());
      destination.appendChild(destData);
    } else { // else, we don't care about comments, xml proc instructions, etc
        numDiscarded++;
    }
}
 

public void head(Node source, int depth) {
    if (source instanceof Element) {
        Element sourceEl = (Element) source;

        if (whitelist.isSafeTag(sourceEl.tagName())) { // safe, clone and copy safe attrs
            ElementMeta meta = createSafeElement(sourceEl);
            Element destChild = meta.el;
            destination.appendChild(destChild);

            numDiscarded += meta.numAttribsDiscarded;
            destination = destChild;
        } else if (source != root) { // not a safe tag, so don't add. don't count root against discarded.
            numDiscarded++;
        }
    } else if (source instanceof TextNode) {
        TextNode sourceText = (TextNode) source;
        TextNode destText = new TextNode(sourceText.getWholeText());
        destination.appendChild(destText);
    } else if (source instanceof DataNode && whitelist.isSafeTag(source.parent().nodeName())) {
      DataNode sourceData = (DataNode) source;
      DataNode destData = new DataNode(sourceData.getWholeData());
      destination.appendChild(destData);
    } else { // else, we don't care about comments, xml proc instructions, etc
        numDiscarded++;
    }
}
 

@JavascriptInterface
public void showSource(String html) {
    Log.d("HTML", html);
    Element body = Jsoup.parse(html).body();
    Elements elements = body.getElementsByAttribute("src");
    for(Element e: elements){
        if(e.tagName().equals("video")){
            for(DataNode node : e.dataNodes()){
                if(node.nodeName().equals("src")){

                    Log.d("JSInterface",node.getWholeData());
                }
            }
        }
        Log.d("JSInterface",e.toString());
    }
    /*Elements elements = body.getElementsByTag("body");
    if(elements != null && !elements.isEmpty()){
        elements = elements.get(0).getElementsByTag("video");
        if(elements != null && !elements.isEmpty()){
            Log.d("JSInterface",elements.get(0).toString());
            elements = elements.get(0).getElementsByAttribute("src");
            if(elements != null && !elements.isEmpty()){
                Log.d("JSInterface",elements.get(0).toString());
            }
        }
    }else {
        Log.d("JSInterface","没有Video");
    }*/
    FileUtils.saveFile("video.html",html);
}
 

private void addInitialFlow(JsonObject initialJson, Document indexDocument,
                            VaadinSession session) {
    String csrfToken = session.getCsrfToken();
    if (csrfToken != null) {
        initialJson.put(CSRF_TOKEN, csrfToken);
    }

    Element elm = new Element("script");
    elm.attr("initial", "");
    elm.appendChild(new DataNode(
            "window.Vaadin = {TypeScript: " + JsonUtil.stringify(initialJson) + "};"
    ));
    indexDocument.head().insertChildren(0, elm);
}
 

private static Element createElement(String tag, String content,
        String... attrs) {
    Element elm = new Element(Tag.valueOf(tag), "");
    if (content != null && !content.isEmpty()) {
        elm.appendChild(new DataNode(content));
    }
    for (int i = 0; i < attrs.length - 1; i += 2) {
        elm.attr(attrs[i], attrs[i + 1]);
    }
    return elm;
}
 

private Element createInlineJavaScriptElement(
        String javaScriptContents) {
    // defer makes no sense without src:
    // https://developer.mozilla.org/en/docs/Web/HTML/Element/script
    Element wrapper = createJavaScriptElement(null, false);
    wrapper.appendChild(
            new DataNode(javaScriptContents));
    return wrapper;
}
 

private Element createDependencyElement(BootstrapUriResolver resolver,
        LoadMode loadMode, JsonObject dependency,
        Dependency.Type type) {
    boolean inlineElement = loadMode == LoadMode.INLINE;
    String url = dependency.hasKey(Dependency.KEY_URL)
            ? resolver.resolveVaadinUri(
                    dependency.getString(Dependency.KEY_URL))
            : null;

    final Element dependencyElement;
    switch (type) {
    case STYLESHEET:
        dependencyElement = createStylesheetElement(url);
        break;
    case JAVASCRIPT:
        dependencyElement = createJavaScriptElement(url,
                !inlineElement);
        break;
    case JS_MODULE:
        dependencyElement = createJavaScriptElement(url, false,
                "module");
        break;
    default:
        throw new IllegalStateException(
                "Unsupported dependency type: " + type);
    }

    if (inlineElement) {
        dependencyElement.appendChild(new DataNode(
                dependency.getString(Dependency.KEY_CONTENTS)));
    }

    return dependencyElement;
}
 

/**
 * Replace link tags with style tags in order to keep the same inclusion
 * order
 *
 * @param doc
 *            the html document
 * @param cssContents
 *            the list of external css files with their content
 */
private static void internStyles(Document doc, List<ExternalCss> cssContents) {
	Elements els = doc.select(CSS_LINKS_SELECTOR);
	for (Element e : els) {
		if (isInlineModeAllowed(e, InlineModes.STYLE_ATTR)) {
			String path = e.attr(HREF_ATTR);
			ExternalCss css = getCss(cssContents, path);
			if (css != null) {
				Element style = new Element(Tag.valueOf(STYLE_TAG), "");
				style.appendChild(new DataNode(getCssContent(css)));
				e.replaceWith(style);
			}
		}
	}
}