【问题标题】:Get all <p> texts after <div> and between <h2> by using Jsoup使用 Jsoup 获取 <div> 之后和 <h2> 之间的所有 <p> 文本
【发布时间】:2017-05-20 01:29:59
【问题描述】:
【问题讨论】:
标签:
java
html
web-scraping
jsoup
wikipedia
【解决方案1】:
试试这个选项:Elements elements = doc.select("span.mw-headline, h2 ~ div, h2 ~ p");
示例代码:
package jsoupex;
import org.jsoup.Jsoup;
import org.jsoup.helper.Validate;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;
import java.io.IOException;
/**
* Example program to list links from a URL.
*/
public class stackoverflw {
public static void main(String[] args) throws IOException {
//Validate.isTrue(args.length == 1, "usage: supply url to fetch");
//String url = "http://localhost/stov_wiki.html";
String url = "https://simple.wikipedia.org/wiki/Battle_of_Hastings ";
//args[0];
System.out.println("Fetching %s..." + url);
Document doc = Jsoup.connect(url).get();
Elements elements = doc.select("span.mw-headline, h2 ~ div, h2 ~ p");
for (Element elem : elements) {
if ( elem.hasClass("mw-headline")) {
System.out.println("************************");
}
System.out.println(elem.text());
if ( elem.hasClass("mw-headline")) {
System.out.println("************************");
} else {
System.out.println("");
}
}
}
}
【解决方案2】:
public static void main(String[] args) {
String entity =
"<h2><span class=\"mw-headline\" id=\"The_battle\">The battle</span></h2>" +
"<div class=\"thumb tright\"></h2>" +
"<p>text I want</p>" +
"<p>text I want</p>" +
"<p>text I want</p>" +
"<p>text I want</p>" +
"<h2>Second Title I want to stop collecting p tags after</h2>";
Document element = org.jsoup.Jsoup.parse(entity,"", Parser.xmlParser());
element.outputSettings().prettyPrint(false);
element.outputSettings().outline(false);
List<TextNode>text=getAllTextNodes(element);
}
private static List<TextNode> getAllTextNodes(Element newElementValue) {
List<TextNode>textNodes = new ArrayList<>();
Elements elements = newElementValue.getAllElements();
for (Element e : elements){
for (TextNode t : e.textNodes()){
textNodes.add(t);
}
}
return textNodes;
}