获取天气预报java代码

import java.io.BufferedReader;

import java.io.FileNotFoundException;

import java.io.IOException;

import java.io.InputStreamReader;

import java.net.SocketTimeoutException;

import java.net.URL;

import java.net.URLConnection;

import java.text.SimpleDateFormat;

import java.util.ArrayList;

import java.util.Calendar;

import java.util.Date;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

import net.sf.json.JSONObject;

public class Weather {

String cityid;

URLConnection connectionData;

StringBuilder sb;

BufferedReader br;

JSONObject jsonData;

JSONObject info;

public Weather(String cityid) throws IOException,NullPointerException{

this.cityid = cityid;

URL url = new URL("http://m.weather.com.cn/data/"+cityid+".html");

connectionData = url.openConnection();

connectionData.setConnectTimeout(1000);

try{

br = new BufferedReader(new InputStreamReader(connectionData.getInputStream(), "utf-8"));

sb = new StringBuilder();

String line = null;

while((line = br.readLine()) != null)

sb.append(line);

}catch (SocketTimeoutException e) {

System.out.println("连接超时");

}catch(FileNotFoundException e){

System.out.println("加载文件出错");

}

String datas = sb.toString();

jsonData = JSONObject.fromObject(datas);

info = jsonData.getJSONObject("weatherinfo");

List> list = new ArrayList>();

for(int i=1;i<=6;i++){

Calendar cal = Calendar.getInstance();

cal.add(Calendar.DAY_OF_YEAR,i-1);

Date date = cal.getTime();

SimpleDateFormat sf = new SimpleDateFormat("yyyy年MM月dd日");

Map map = new HashMap();

map.put("city", info.getString("city").toString());

map.put("date_y", sf.format(date));

map.put("week", getWeek(cal.get(Calendar.DAY_OF_WEEK)));

map.put("fchh", info.getString("fchh").toString());

map.put("weather", info.getString("weather"+i).toString());

map.put("temp", info.getString("temp"+1).toString());

map.put("wind", info.getString("wind"+1).toString());

map.put("fl", info.getString("fl"+1).toString());

map.put("index", info.getString("index").toString());

map.put("index_uv", info.getString("index_uv").toString());

map.put("index_tr", info.getString("index_tr").toString());

map.put("index_co", info.getString("index_co").toString());

map.put("index_cl", info.getString("index_cl").toString());

map.put("index_xc", info.getString("index_xc").toString());

map.put("index_d", info.getString("index_d").toString());

list.add(map);

}

for(int j=1;j

Map wMap = list.get(j);

System.out.println(wMap.get("city")+"\t"+wMap.get("date_y")+"\t"+wMap.get("week")+wMap.get("weather")+"\t"+wMap.get("temp")+"\t"+wMap.get("index_uv"));

}

}

public String getWeek(int iw){

String weekStr = "";

switch (iw) {

case 1:

weekStr = "星期天";

break;

case 2:

weekStr = "星期一";

break;

case 3:

weekStr = "星期二";

break;

case 4:

weekStr = "星期三";

break;

case 5:

weekStr = "星期四";

break;

case 6:

weekStr = "星期五";

break;

case 7:

weekStr = "星期六";

break;

default:

break;

}

return weekStr;

}

public static void main(String[] args){

try{

new Weather("101010100");//北京市

}catch (Exception e) {

e.printStackTrace();

}

}

}