无聊就给自己写个天气预报查查

GetWeather.java源码

import java.io.IOException;

import java.util.ArrayList;

import java.util.List;

import java.util.Map;

import javax.servlet.ServletException;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.json.JSONException;

import org.json.JSONObject;

public class GetWeather extends HttpServlet{

@Override

protected void doGet(HttpServletRequest req, HttpServletResponse resp)

throws ServletException, IOException {

// TODO Auto-generated method stub

doPost(req, resp);

}

@Override

protected void doPost(HttpServletRequest req, HttpServletResponse resp)

throws ServletException, IOException {

Map map = CityUtil.getCity();

String cityName = new String(req.getParameter("cityName").toString().getBytes("ISO-8859-1"),"UTF-8");

cityName = map.get(cityName);

String weatherURL = "http://m.weather.com.cn/data/"+cityName+".html";

Weather weather = this.getWeather(weatherURL);

req.setAttribute("weather", weather);

req.getRequestDispatcher("/weather.jsp").forward(req,resp);

}

private Weather getWeather(String weatherURL) {

List returnedList = new ArrayList();

Weather weather = new Weather();

String jsonList = NetworkUtil.getStringContentFromURL(weatherURL);

try {

JSONObject jsonStr = new JSONObject(jsonList);

JSONObject jsonObject = jsonStr.getJSONObject("weatherinfo");

weather.setCityId(jsonObject.getString("cityid"));

weather.setCityName(jsonObject.getString("city"));

weather.setToday(jsonObject.getString("date_y"));

weather.setWeek(jsonObject.getString("week"));

weather.setTemp1(jsonObject.getString("temp1"));

weather.setTemp2(jsonObject.getString("temp2"));

weather.setTemp3(jsonObject.getString("temp3"));

weather.setTemp4(jsonObject.getString("temp4"));

weather.setTemp5(jsonObject.getString("temp5"));

weather.setTemp6(jsonObject.getString("temp6"));

weather.setWeather1(jsonObject.getString("weather1"));

weather.setWeather2(jsonObject.getString("weather2"));

weather.setWeather3(jsonObject.getString("weather3"));

weather.setWeather4(jsonObject.getString("weather4"));

weather.setWeather5(jsonObject.getString("weather5"));

weather.setWeather6(jsonObject.getString("weather6"));

weather.setWind1(jsonObject.getString("wind1"));

weather.setWind2(jsonObject.getString("wind2"));

weather.setWind3(jsonObject.getString("wind3"));

weather.setWind4(jsonObject.getString("wind4"));

weather.setWind5(jsonObject.getString("wind5"));

weather.setWind6(jsonObject.getString("wind6"));

} catch (JSONException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

return weather;

}

}

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.net.MalformedURLException;

import java.net.URL;

public class NetworkUtil {

public static String getStringContentFromURL(String url){

StringBuffer sb = new StringBuffer();

InputStream is = null;

InputStreamReader isr = null;

BufferedReader br = null;

try{

is = new URL(url).openConnection().getInputStream();

isr = new InputStreamReader(is, "UTF-8");

br = new BufferedReader(isr);

String line = null;

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

sb.append(line);

}

} catch (MalformedURLException e) {

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

}finally{

if(null != br){

try {

br.close();

} catch (IOException e) {

e.printStackTrace();

}

}

if(null != isr){

try {

isr.close();

} catch (IOException e) {

e.printStackTrace();

}

}

if(null != is){

try {

is.close();

} catch (IOException e) {

e.printStackTrace();

}

}

}

return sb.toString();

}

}

public class CityUtil {

public static Map getCity(){

Map map = new HashMap();

File f = new File("aa.txt");

try {

f.createNewFile();

} catch (IOException e1) {

// TODO Auto-generated catch block

e1.printStackTrace();

}

try {

BufferedReader br = new BufferedReader(new InputStreamReader(CityUtil.class.getResourceAsStream("/city.txt"),"UTF-8"));

String s = br.readLine();

while(s!=null){

String value = s.substring(0, s.indexOf('='));

//String key = new String(s.substring(s.indexOf('=')+1).getBytes("ISO-8859-1"),"UTF-8");

String key = s.substring(s.indexOf('=')+1);

map.put(key, value);

s = br.readLine();

}

} catch (Exception e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

return map;

}

}