httpclient+jsoup实现网页信息抓取

package com.wan.domain;public class Almanac {
private String solar; /* 阳历 e.g.2016年 4月11日 星期一 */
private String lunar; /* 阴历 e.g. 猴年 三月初五*/
private String chineseAra; /* 天干地支纪年法 e.g.丙申年 壬辰月 癸亥日*/
private String should; /* 宜e.g. 求子 祈福 开光 祭祀 安床*/
private String avoid; /* 忌 e.g. 玉堂（黄道）危日，忌出行*/
public String getSolar() {
return solar;
}
public void setSolar(String solar) {
this.solar = solar;
}
public String getLunar() {
return lunar;
}
public void setLunar(String lunar) {
this.lunar = lunar;
}
public String getChineseAra() {
return chineseAra;
}
public void setChineseAra(String chineseAra) {
this.chineseAra = chineseAra;
}
public String getShould() {
return should;
}
public void setShould(String should) {
this.should = should;
}
public String getAvoid() {
return avoid;
}
public void setAvoid(String avoid) {
this.avoid = avoid;
}
public Almanac(String solar, String lunar, String chineseAra, String should,String avoid) {
this.solar = solar;
this.lunar = lunar;
this.chineseAra = chineseAra;
this.should = should;
this.avoid = avoid;
}}

package com.wan.controller;import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;import org.apache.http.HttpEntity;
import org.apache.http.ParseException;
import org.apache.http.client.ClientProtocolException;
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;import com.wan.domain.Almanac;public class AlmanacUtil {
/**
* 单例工具类
*/
private AlmanacUtil() {
}
/**
* 获取万年历信息
* @return
*/
public static Almanac getAlmanac(){
String url="http://tools.2345.com/rili.htm";
String html=pickData(url);
Almanac almanac=analyzeHTMLByString(html);
return almanac;
} /*
* 爬取网页信息
*/
private static String pickData(String url) {
CloseableHttpClient httpclient = HttpClients.createDefault();
try {
HttpGet httpget = new HttpGet(url);
CloseableHttpResponse response = httpclient.execute(httpget);
try {
// 获取响应实体
HttpEntity entity = response.getEntity();
// 打印响应状态
if (entity != null) {
return EntityUtils.toString(entity);
}
} finally {
response.close();
}
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (ParseException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
// 关闭连接,释放资源
try {
httpclient.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return null;
} /*
* 使用jsoup解析网页信息
*/
private static Almanac analyzeHTMLByString(String html){
String solarDate,lunarDate,chineseAra,should,avoid=" ";
Document document = Jsoup.parse(html);
//公历时间
solarDate=getSolarDate(document,"bjtime");
//农历时间
Element eLunarDate=document.getElementById("info_nong");
lunarDate=eLunarDate.child(0).html().substring(1,3)+eLunarDate.html().substring(11);
//天干地支纪年法
Element eChineseAra=document.getElementById("info_chang");
chineseAra=eChineseAra.text().toString();
//宜
should=getSuggestion(document,"yi");
//忌
avoid=getSuggestion(document,"ji");
Almanac almanac=new Almanac(solarDate,lunarDate,chineseAra,should,avoid);
return almanac;
}
/*
* 获取忌/宜
*/
private static String getSuggestion(Document doc,String id){
Element element=doc.getElementById(id);
Elements elements=element.getElementsByTag("a");
StringBuffer sb=new StringBuffer();
for (Element e : elements) {
sb.append(e.text()+" ");
}
return sb.toString();
} /*
* 获取公历时间,用yyyy年MM月dd日 EEEE格式表示。
* @return yyyy年MM月dd日 EEEE
*/
private static String getSolarDate(Document doc,String id) {
Calendar calendar = Calendar.getInstance();
Date solarDate = calendar.getTime();
SimpleDateFormat formatter = new SimpleDateFormat("yyyy年MM月dd日 EEEE");
return formatter.format(solarDate);
}
}

package com.wan.test;import com.wan.controller.AlmanacUtil;
import com.wan.domain.Almanac;public class Test {public static void main(String[] args) {
// TODO Auto-generated method stub
Almanac almanac=AlmanacUtil.getAlmanac();
System.out.println("公历时间"+almanac.getSolar());
System.out.println("农历时间"+almanac.getLunar());
System.out.println("天干地支"+almanac.getChineseAra());
System.out.println("宜"+almanac.getShould());
System.out.println("忌"+almanac.getAvoid());
}}