package com.javaxk.jsoup;

 import org.apache.http.HttpEntity;

 import org.apache.http.client.methods.CloseableHttpResponse;

 import org.apache.http.client.methods.HttpGet;

 import org.apache.http.impl.client.CloseableHttpClient;

 import org.apache.http.impl.client.HttpClients;

 import org.apache.http.util.EntityUtils;

 import org.jsoup.Jsoup;

 import org.jsoup.nodes.Document;

 import org.jsoup.nodes.Element;

 import org.jsoup.select.Elements;

 public class Demo3 {

     public static void main(String[] args) throws Exception{

         CloseableHttpClient httpclient = HttpClients.createDefault(); // 创建httpclient实例

         HttpGet httpget = new HttpGet("http://www.cnblogs.com/"); // 创建httpget实例

         CloseableHttpResponse response = httpclient.execute(httpget); // 执行get请求

         HttpEntity entity=response.getEntity(); // 获取返回实体

         String content=EntityUtils.toString(entity, "utf-8");

         response.close(); // 关闭流和释放系统资源

         Document doc=Jsoup.parse(content); // 解析网页 得到文档对象

         Elements linkElements=doc.select(".post_item .post_item_body h3 a"); // 查找所有帖子DOM

         for(Element e:linkElements){

             System.out.println("博客标题："+e.text());

             System.out.println("-------------");

         }

         Elements hrefElements=doc.select("a[href]"); // 带有href属性的a元素

         for(Element e:hrefElements){

             System.out.println(e.toString());

             System.out.println("-------------");

         }

         Elements imgElements=doc.select("img[src$=.png]"); // 查找扩展名为.png的图片DOM节点

         for(Element e:imgElements){

             System.out.println(e.toString());

             System.out.println("-------------");

         }

         Element element=doc.getElementsByTag("title").first(); // 获取tag是title的所有DOM元素

         String title=element.text(); // 返回元素的文本

         System.out.println("网页标题是："+title);

     }

 }