我正在做一个学校项目，并且试图解析一个html网页以仅显示标签，就像下面的输出一样，没有结束标签。 (我手工编码)
<html>
<head>
<title>
<basefont>
<body>
<h1>
<h2>
到目前为止，这只是我的主要方法中的代码。
public class ReadWithScanner {
public static void main(String[] args) throws IOException
{
String URL ="http://csb.stanford.edu/class/public/pages/sykes_webdesign/05_simple.html";
Document doc = Jsoup.connect(URL).get();
//Element p = doc.select("p");
//Elements p = doc.getElementsByTag("h6");
Elements p = doc.select("html");
//System.out.println(p);
DoublyLinkedList theList = new DoublyLinkedList();
theList.insert(p); // insert at front
theList.displayTree();
}
}
这是到目前为止我的输出的几行。
最佳答案
package Scrapper;
import java.util.LinkedList;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Node;
import org.jsoup.select.NodeVisitor;
class TagVisitor implements NodeVisitor {
public static class TagInfo {
public String name;
public int depth;
TagInfo(String name, int depth) {
this.depth = depth;
this.name = name;
}
}
private LinkedList<TagInfo> tags = new LinkedList<>();
public void head(Node node, int depth) {
String tag = node.nodeName();
if(!tag.startsWith("#")) {
tags.add(new TagInfo('<'+node.nodeName()+'>', depth));
}
}
public void tail(Node node, int depth) {
//Do nothing
}
public LinkedList<TagInfo> getTags() {
return tags;
}
public void printTree() {
for(TagInfo info : tags) {
String indentation = new String(new char[info.depth*2]).replace('\0', ' ');
System.out.println(indentation + info.name);
}
}
}
public class MainJsoup {
public static void main(String[] args) throws Exception {
//InputStream stream = new FileInputStream("test.html");
//Document doc = Jsoup.parse(stream, "UTF-8", "");
String URL ="http://csb.stanford.edu/class/public/pages/sykes_webdesign/05_simple.html";
Document doc = Jsoup
.connect(URL)
.userAgent("Mozilla/5.0 (Windows; U; Windows NT 6.1; rv:2.2) Gecko/20110201")
.timeout(2000)
.get();
TagVisitor visitor = new TagVisitor();
doc.traverse(visitor);
visitor.printTree();
}
}