如何使用jsoup编辑html标签中的所有文本值 [英] how to edit all text values in html tags using jsoup
问题描述
我想要的：我是 Jsoup 的新手。我想解析我的 html 字符串并搜索标签内出现的每个文本值（任何标签）。然后将该文本值更改为其他内容。
What I want: I am new to Jsoup. I want to parse my html string and search for each text value that appears inside tags (any tag). And then change that text value to something else.
我所做的：我可以更改单个标签的文本值。下面是代码：
What I have done: I am able to change the text value for single tag. Below is the code:
public static void main(String[] args) {
String html = "<div><p>Test Data</p> <p>HELLO World</p></div>";
Document doc1=Jsoup.parse(html);
Elements ps = doc1.getElementsByTag("p");
for (Element p : ps) {
String pText = p.text();
p.text(base64_Dummy(pText));
}
System.out.println("======================");
String changedHTML=doc1.html();
System.out.println(changedHTML);
}
public static String base64_Dummy(String abc){
return "This is changed text";
}
输出：
output:
======================
<html>
<head></head>
<body>
<div>
<p>This is changed text</p>
<p>This is changed text</p>
</div>
</body>
</html>
以上代码可以将 p 标签的价值。但是，在我的情况下， html 字符串可以包含任何标签;我想要搜索和更改其价值。
如何搜索html字符串中的所有标签并逐个更改其文本值。
Above code is able to change the p tag's value. But, in my case html string can contain any tag; whose value I want to search and change.
How can I search all tags in html string and change their text value one by one.
推荐答案
您可以尝试类似于这段代码：
You can try with something similar to this code:
String html = "<html><body><div><p>Test Data</p> <div> <p>HELLO World</p></div></div> other text</body></html>";
Document doc = Jsoup.parse(html);
List<Node> children = doc.childNodes();
// We will search nodes in a breadth-first way
Queue<Node> nodes = new ArrayDeque<>();
nodes.addAll(doc.childNodes());
while (!nodes.isEmpty()) {
Node n = nodes.remove();
if (n instanceof TextNode && ((TextNode) n).text().trim().length() > 0) {
// Do whatever you want with n.
// Here we just print its text...
System.out.println(n.parent().nodeName()+" contains text: "+((TextNode) n).text().trim());
} else {
nodes.addAll(n.childNodes());
}
}
你将得到以下输出： p>
And you'll get the following output:
body contains text: other text
p contains text: Test Data
p contains text: HELLO World
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