Jsoup.parse（）。text（）添加不需要的空格

Question

I'm trying to clean a String removing all html tags from it, so this is my code:

System.out.println("Result:" + Jsoup.parse("Dani<div></div>el").text());    

the result is

Result:Dani el

instead should be Result:Daniel

Following Jsoup code I see that the "problem" is in org.jsoup.nodes.Element in this method:

public String text() {
    final StringBuilder accum = new StringBuilder();
    new NodeTraversor(new NodeVisitor() {
        public void head(Node node, int depth) {
            if (node instanceof TextNode) {
                TextNode textNode = (TextNode) node;
                appendNormalisedText(accum, textNode);
            } else if (node instanceof Element) {
                Element element = (Element) node;
                if (accum.length() > 0 &&
                    (element.isBlock() || element.tag.getName().equals("br")) &&
                    !TextNode.lastCharIsWhitespace(accum))
                    accum.append(" ");
            }
        }

        public void tail(Node node, int depth) {
        }
    }).traverse(this);
    return accum.toString().trim();
}

when at some apoint there is accum.append(" "); . Is clear that in some circustances is convenient that a block html tag add a space in the corresponding text version; but in some cases this is not true. In my case infact the result is wrong.

I think would be good that text() method have a boolean parameter preserveWhiteSpaces that enable or disable the execution of the line accum.append(" "); . I hope some developer of Jsoup can consider this request: I seen that also others people has this problem with whitespaces.

If someone has some good idea to solve the problem without change the Jsoup sources is welcomed.

Answer 1

I'm trying to clean a String removing all html tags from it,

You want to use the clean() method.

SAMPLE CODE

System.out.println("Result:" + Jsoup.clean("Dani<div></div>el", Whitelist.none()));

OUTPUT

Result:Daniel

---

In my case however the result is wrong. Do you have some suggestion to solve this problem?

You can instanciate a NodeTraversor with a custom NodeVisitor .

Just to give you an idea:

private static String toText(Element element) {
    final StringBuilder accum = new StringBuilder();
    new NodeTraversor(new NodeVisitor() {
        public void head(Node node, int depth) {
            if (node instanceof TextNode) {
                TextNode textNode = (TextNode) node;
                accum.append(textNode.getWholeText());
            } else if (node instanceof Element) {
                // Do nothing ...
            }
        }

        public void tail(Node node, int depth) {
        }
    }).traverse(element);

    return accum.toString().trim();
}

SAMPLE CODE

public static void main(String[] args) {
    System.out.println("Result:" + toText(Jsoup.parse("Dani<div></div>el")));
}

OUTPUT

Result:Daniel