java实现获取网站的keywords，description

获取网站的<meta name="keywords" content="" /＞和<meta name="description" content="“>关键字和描述内容

实现HTML解析器jsoup

下载jsoup的lib地址：http://jsoup.org/download

package cn.evan.util;

import java.io.IOException;

import org.jsoup.Jsoup;

import org.jsoup.nodes.Document;

import org.jsoup.nodes.Element;

import org.jsoup.select.Elements;

public class SemanticCrawl {

    public static void main(String[] args) {

        Document doc = null;

        try {

            doc = Jsoup.connect("网址").get();

        } catch (IOException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        }

        String title = doc.title();

        Elements metas = doc.head().select("meta");  

        for (Element meta : metas) {  

            String content = meta.attr("content");  

            if ("keywords".equalsIgnoreCase(meta.attr("name"))) {  

                System.out.println("关键字："+content);  

            }  

            if ("description".equalsIgnoreCase(meta.attr("name"))) {  

                System.out.println("网站内容描述:"+content);  

            }  

        }  

        Elements keywords = doc.getElementsByTag("meta");

        System.out.println("标题"+title);

    }

}

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