java获取5日天气预报（json数据）

此数据来源于中国天气网：http://www.weather.com.cn/
访问示例地址为：http://m.weather.com.cn/data/101020100.html
使用案例：导航189 http://www.dh189.com/ 顶部天气信息

地区代码整理在附件中citys.xml
说明：p代表省 n 省名称例如:B 北京,c 城市

返回的json数据示例：

{"weatherinfo":{"city":"上海","city_en":"shanghai","date_y":"2010年5月31日","date":"庚寅年四月十八","week":"星期一","fchh":"08","cityid":"101020100","temp1":"27℃~18℃","temp2":"26℃~18℃","temp3":"27℃~19℃","temp4":"27℃~20℃","temp5":"25℃~20℃","tempF1":"80.6℉~64.4℉","tempF2":"78.8℉~64.4℉","tempF3":"80.6℉~66.2℉","tempF4":"80.6℉~68℉","tempF5":"77℉~68℉","weather1":"多云","weather2":"多云","weather3":"晴转多云","weather4":"多云","weather5":"阴","img1":"1","img2":"99","img3":"1","img4":"99","img5":"0","img6":"1","img7":"1","img8":"99","img9":"2","img10":"99","img_single":"1","img_title1":"多云","img_title2":"多云","img_title3":"多云","img_title4":"多云","img_title5":"晴","img_title6":"多云","img_title7":"多云","img_title8":"多云","img_title9":"阴","img_title10":"阴","img_title_single":"多云","wind1":"东风3-4级","wind2":"东风3-4级","wind3":"东风3-4级","wind4":"东南风4-5级","wind5":"东南风转东风4-5级","fx1":"东风","fx2":"东风","fl1":"3-4级","fl2":"3-4级","fl3":"3-4级","fl4":"4-5级","fl5":"4-5级","index":"暂缺","index_d":"暂缺","index48":"暂缺","index48_d":"暂缺","index_uv":"弱","index48_uv":"弱","index_xc":"适宜","index_tr":"很适宜","index_co":"较舒适","st1":"26","st2":"17","st3":"25","st4":"17","st5":"25","st6":"18"}}

导航189天气抓取示例：
Crawler.java

import java.util.TimerTask;

import org.apache.commons.lang.StringUtils;
import org.htmlparser.Parser;
import org.htmlparser.beans.StringBean;
import org.htmlparser.lexer.Lexer;

public abstract class Crawler extends TimerTask {
    
    public String convert2String(String html) {
        if (html != null) {
            String str = html;
            Lexer l = new Lexer(str);
            Parser parser = new Parser(l);
            StringBean sb = new StringBean();
            try {
                parser.visitAllNodesWith(sb);
            } catch (Exception e) {
                return str;
            }
            String ret = sb.getStrings();
            if (ret != null) {
                ret = ret.replace("\r", "");
                ret = ret.replace("\t", "");
            }
            return ret;
        }
        return "";
    }

    public String formatString(String str) {
        if (StringUtils.isBlank(str)) {
            return "";
        }
        str = convert2String(str);
        str = str.replaceAll("&", "&");
        str = str.replaceAll("\"", "“").replaceAll("<", "").replaceAll("\"", "“");
        str = str.trim();
        return str;
    }

}

WeatherCrawler.java

import java.net.URI;
import java.util.Date;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpProtocolParams;
import org.apache.http.util.EntityUtils;
import org.json.JSONException;
import org.json.JSONObject;

import com.dh189.util.Constants;
import com.dh189.util.Util;

public class WeatherCrawler extends Crawler {

    private static final String GETURL = "http://m.weather.com.cn/data/";

    DefaultHttpClient httpclient = new DefaultHttpClient();

    public void start() {
        String[] citys = Constants.WEATHERCITYCODE.split(",");
        for (String city : citys) {
            String url = GETURL + city + ".html";
            String val = getWeather(url);
            try {
                JSONObject json = new JSONObject(val);
                JSONObject j = json.getJSONObject("weatherinfo");
                String alt1 = j.getString("weather1") + " " + j.getString("wind1");
                String alt2 = j.getString("weather2") + " " + j.getString("wind2");
                String html = "<div class=\"w_l\"> <div class=\"w_l_u\"> <table style=\"width: 35px;height: 45px;\"> <tr> <td style=\"color: #F24F00\"><b>"
                        + j.getString("city")
                        + "</b></td> </tr> </table> </div> <div class=\"w_l_d\"><a href=\"javascript:dingCity();\" title=\"定制天气预报\" target=\"_self\">定制</a> </div> </div>  <ul>  <li class=\"w_r\" style=\"width: 222px;\">  <table style=\"height: 70px;width: 100%;float: left;\">  <tr valign=\"bottom\">  <td><img src=\"images/weather/b"
                        + j.getString("img1") + ".gif\" height=\"30\"/></td>  <td><img src=\"images/weather/b" + j.getString("img3")
                        + ".gif\" height=\"30\"/></td>  </tr>  <tr>  <td width=\"105\" style=\"line-height: 15px;\"><a href=\"http://www.weather.com.cn/html/weather/" + city + ".shtml\" title=\""
                        + alt1 + "\">" + Util.getWeekOfDate(new Date()) + ":" + j.getString("temp1") + "<br/>" + j.getString("weather1")
                        + "</a></td>  <td width=\"105\" style=\"line-height: 15px;\"><a href=\"http://www.weather.com.cn/html/weather/" + city + ".shtml\" title=\"" + alt2 + "\">"
                        + Util.getWeekOfDate(Util.dateAddOrReduce(new Date(), 1)) + ":" + j.getString("temp2") + "<br/>" + j.getString("weather2") + "</a></td></tr></table></li></ul>";
                String dir = Constants.WEATHERDIR + city + ".html";
                Util.writeSortFile(dir, html, false);
            } catch (JSONException e) {
                e.printStackTrace();
            }
        }
    }

    /**
     * 处理GET请求，返回整个页面
     * 
     * @param url
     * @return
     */
    public String getWeather(String url) {
        String content = null;
        try {
            DefaultHttpClient httpclient = new DefaultHttpClient();
            HttpConnectionParams.setConnectionTimeout(httpclient.getParams(), 30 * 1000);
            HttpConnectionParams.setSoTimeout(httpclient.getParams(), 30 * 1000);
            //伪装成火狐浏览器
            HttpProtocolParams.setUserAgent(httpclient.getParams(), "Mozilla/5.0 (Windows; U; Windows NT 5.1; zh-CN; rv:1.9.1.9) Gecko/20100315 Firefox/3.5.9");
            HttpGet httpget = new HttpGet();
            content = "";
            httpget.setURI(new URI(url));
            HttpResponse response = httpclient.execute(httpget);
            HttpEntity entity = response.getEntity();
            content = null;
            if (entity != null) {
                content = EntityUtils.toString(entity);
                httpget.abort();
                httpclient.getConnectionManager().shutdown();
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return content;
    }

    @Override
    public void run() {
        start();
    }
}

package com.dh189.util;

public class Constants {

    public final static String WEATHERCITYCODE = "101010100,101010700,101010300,101011100,101340101";

    public final static String dir = "D:\\javawork\\dh1892\\WebRoot\\";

    public final static String WEATHERDIR = dir + "weather\\";

}

附件中内容：
citys.xml ，天气图标，java解析json包,httpclient包

评论

5 楼 ijlkdwg 2013-12-03  

没有看到 jar 包在哪 ？

4 楼 moxin0703 2012-07-30  

哪有Utils包啊？

3 楼 cuijiangman 2011-04-19  

楼主，缺少 com.dh189.util.Util 吧？

2 楼 dh189 2010-06-27  

mywayscut 写道

import com.dh189.util.Constants在哪？

已经提交了！之前忘了提交了。

1 楼 mywayscut 2010-06-08  

import com.dh189.util.Constants在哪？