Jsoup解析添加定界符

本文介绍了Jsoup解析添加定界符的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我正在尝试使用Jsoup解析HTML文件并删除html标签.每当我删除HTML标记时，我都希望使用定界符(句号)代替该标记.

I am trying to parse an HTML file using Jsoup and removing the html tags. Whenever I remove an HTML tag I want a delimiter(fullstop) instead of the tag.

例如，如果html是:

for example if the html is:

<head> <title>N-gram and Fast Pattern Extraction Algorithm - CodeProject</title>

我希望输出为

..N-gram and Fast Pattern Extraction Algorithm - CodeProject.

我是Jsoup的新手.可以使用Jsoup吗?

I am a newcomer to Jsoup. Is it possible using Jsoup?

推荐答案

小心递归.对于较大的DOM，可能会在内存方面或性能方面引起问题.

Be careful with the recursion. For a big DOM it might cause you problems, memory-wise or performance-wise.

import java.util.ListIterator;

import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.nodes.TextNode;
import org.jsoup.select.Elements;

public class Main {

    public static void main(String[] args) {
        try {

            String html = "<html><head>" +
                                    "<title>Introduction</title>" +
                                "</head>" +
                                    "<body>" +
                                    "<a target=\"_top\" href=\"/tags/ref_eventattributes.asp\">HTML Events</a>"+
                                    "<a target=\"_top\" href=\"/tags/ref_canvas.asp\">HTML Canvas</a>"+
                                    "<a target=\"_top\" href=\"/tags/ref_av_dom.asp\">HTML Audio/Video</a>"+ 
                                    "<a target=\"_top\" href=\"/tags/ref_html_dtd.asp\">HTML Doctypes</a></body></html>";

            Document doc = Jsoup.parse(html);
            System.out.println(doc);

            System.out.println("\n------------------------------------------------------\n");
            replaceTag(doc.children());

            System.out.println(doc);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public static void replaceTag(Elements els) {
        ListIterator<Element> iter = els.listIterator();
        while(iter.hasNext()) {
            Element el = iter.next();  
            replaceTag(el.children());
            if(el.parentNode() != null)
                el.replaceWith(new TextNode("." + el.text().trim() + ".", ""));
        }
    }
}

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