java Jsoup - 提取文本
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Jsoup - extracting text
提问by Eugene Retunsky
I need to extract text from a node like this:
我需要从这样的节点中提取文本：
<div>
Some text <b>with tags</b> might go here.
<p>Also there are paragraphs</p>
More text can go without paragraphs<br/>
</div>
And I need to build:
我需要构建：
Some text <b>with tags</b> might go here.
Also there are paragraphs
More text can go without paragraphs
Element.textreturns just all content of the div. Element.ownText- everything that is not inside children elements. Both are wrong. Iterating through childrenignores text nodes.
Element.text只返回 div 的所有内容。Element.ownText- 不在子元素中的所有内容。两者都是错误的。遍历children忽略文本节点。
Is there are way to iterate contents of an element to receive text nodes as well. E.g.
有没有办法迭代元素的内容来接收文本节点。例如
- Text node - Some text
- Node <b> - with tags
- Text node - might go here.
- Node <p> - Also there are paragraphs
- Text node - More text can go without paragraphs
- Node <br> - <empty>
- 文本节点 - 一些文本
- 节点 <b> - 带标签
- 文本节点 - 可能会去这里。
- 节点 <p> - 还有段落
- 文本节点 - 更多文本可以没有段落
- 节点 <br> - <空>
回答by Vadim Ponomarev
Element.children()returns an Elementsobject - a list of Elementobjects. Looking at the parent class, Node, you'll see methods to give you access to arbitrary nodes, not just Elements, such as Node.childNodes().
Element.children()返回一个Elements对象 - 一个Element对象列表。查看父类Node，您将看到允许您访问任意节点的方法，而不仅仅是元素，例如Node.childNodes()。
public static void main(String[] args) throws IOException {
String str = "<div>" +
" Some text <b>with tags</b> might go here." +
" <p>Also there are paragraphs</p>" +
" More text can go without paragraphs<br/>" +
"</div>";
Document doc = Jsoup.parse(str);
Element div = doc.select("div").first();
int i = 0;
for (Node node : div.childNodes()) {
i++;
System.out.println(String.format("%d %s %s",
i,
node.getClass().getSimpleName(),
node.toString()));
}
}
Result:
结果：
1 TextNode Some text 2 Element <b>with tags</b> 3 TextNode might go here. 4 Element <p>Also there are paragraphs</p> 5 TextNode More text can go without paragraphs 6 Element <br/>
回答by Charles
for (Element el : doc.select("body").select("*")) {
for (TextNode node : el.textNodes()) {
node.text() ));
}
}
回答by John Zoetebier
Assuming you want text only (no tags) my solution is below.
Output is:
Some text with tags might go here. Also there are paragraphs. More text can go without paragraphs
假设您只需要文本（无标签），我的解决方案如下。
输出是：
一些带有标签的文本可能会出现在这里。还有段落。更多的文字可以没有段落
public static void main(String[] args) throws IOException {
String str =
"<div>"
+ " Some text <b>with tags</b> might go here."
+ " <p>Also there are paragraphs.</p>"
+ " More text can go without paragraphs<br/>"
+ "</div>";
Document doc = Jsoup.parse(str);
Element div = doc.select("div").first();
StringBuilder builder = new StringBuilder();
stripTags(builder, div.childNodes());
System.out.println("Text without tags: " + builder.toString());
}
/**
* Strip tags from a List of type <code>Node</code>
* @param builder StringBuilder : input and output
* @param nodesList List of type <code>Node</code>
*/
public static void stripTags (StringBuilder builder, List<Node> nodesList) {
for (Node node : nodesList) {
String nodeName = node.nodeName();
if (nodeName.equalsIgnoreCase("#text")) {
builder.append(node.toString());
} else {
// recurse
stripTags(builder, node.childNodes());
}
}
}
回答by Haydar Ghasemi
you can use TextNode for this purpose:
为此，您可以使用 TextNode：
List<TextNode> bodyTextNode = doc.getElementById("content").textNodes();
String html = "";
for(TextNode txNode:bodyTextNode){
html+=txNode.text();
}
