我想选择没有更多 div 或任何其他标签的 div 标签。 我尝试了下面的代码，我希望输出为“这是输出” 但空的伪选择器不起作用。
String htmlString =
"<html><div><div><div><p><b>This is first line</b></p> </div><b>This is second line</b></div><div>This is output</div><div><span style=\"color:blue\">This is third line</span></div></html>"`;
org.jsoup.nodes.Document doc1 = Jsoup.parse(htmlString);
Elements elements1 = doc1.select("html:empty");
for (Element element : elements1) {
System.out.println(element.toString());
}
最佳答案
自从您发布了几个 similar questions最近，您的 html 结构发生了变化并且 css 选择器损坏了，也许避免 css 选择器并自己处理/过滤元素会更好/更适合您:
String htmlString = "<html><p><b>This has no div</b></p><div><div><div><p><b>This is first line</b></p></div><b>This is second line</b></div><div>This is output</div><div><span style=\"color:blue\">This is third line</span></div></html>";
Document doc = Jsoup.parse(htmlString);
Elements elements = doc.getAllElements();
// for all textnodes
outerloop:
for (Element element : elements) {
if(element.childNodes().size()>0 && element.childNode(0).nodeName().equals("#text")){
Element divContent = element;
if(divContent.nodeName().equals("div")){
System.out.println("No element in div; text: " + element.text()+ "\n");
}else{
while(divContent.parents().size()>0 && !divContent.parent().nodeName().equals("div")){
divContent = divContent.parent();
if(divContent.parent().nodeName().equals("body")){
continue outerloop; // continue, to skip element <p><b>This has no div</b></p>
//break; // break, if you want the element <p><b>This has no div</b></p> anyway
}
}
System.out.println("element: " + divContent.toString());
System.out.println("text: " + element.text() + "\n");
}
}
}
// only for <div>text...</div>
for (Element element : elements) {
if(element.childNodes().size()>0 && element.childNode(0).nodeName().equals("#text") && element.nodeName().equals("div")){
System.out.println("text: " + element.text());
}
}
输出:
element: <p><b>This is first line</b></p>
text: This is first line
element: <b>This is second line</b>
text: This is second line
No element in div; text: This is output
element: <span style="color:blue">This is third line</span>
text: This is third line
text: This is output
关于java - 如何使用:empty pseudo selector in jsoup，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/38989970/