package com.weather.test;

 import java.io.InputStream;

 import java.net.URL;

 import java.net.URLConnection;

 import javax.xml.parsers.DocumentBuilder;

 import javax.xml.parsers.DocumentBuilderFactory;

 import org.w3c.dom.Document;

 import org.w3c.dom.NamedNodeMap;

 import org.w3c.dom.Node;

 import org.w3c.dom.NodeList;

 public class Test {

     // Application ID

     final String appid = "雅虎Application ID 需申请";

     public String getWOEID(String name) throws Exception {

         URL url = new URL("http://where.yahooapis.com/v1/places.q(" + name

                 + ")?appid=" + appid);

         URLConnection connection = url.openConnection();

         Document doc = stringToDOM(connection.getInputStream());

         Node location = doc.getElementsByTagName("name").item(0);

         Node node = doc.getElementsByTagName("woeid").item(0);

         String woeid = node.getTextContent();

         System.out.println(location.getTextContent() + "\t"

                 + node.getNodeName() + ":" + woeid);

         return woeid;

     }

     public void getWeather(String woeid) {

         try {

             URL url = new URL("http://weather.yahooapis.com/forecastrss?u=c&w="

                     + woeid);

             URLConnection connection = url.openConnection();

             Document doc = stringToDOM(connection.getInputStream());

             Node lat = doc.getElementsByTagName("geo:lat").item(0);

             Node lon = doc.getElementsByTagName("geo:long").item(0);

             System.out.println("纬度：" + lat.getTextContent() + "\t\t经度："

                     + lon.getTextContent());

             Node node = doc.getElementsByTagName("yweather:astronomy").item(0);

             Node sunrise_node = node.getAttributes().item(0);

             Node sunset_node = node.getAttributes().item(1);

             System.out.println("今天天气情况：");

             System.out.println("日出时间：" + sunrise_node.getNodeValue() + "\t\t"

                     + "日落时间：" + sunset_node.getTextContent());

             NamedNodeMap today_map = doc

                     .getElementsByTagName("yweather:condition").item(0)

                     .getAttributes();

             System.out.println("温度："

                     + today_map.getNamedItem("temp").getNodeValue() + "℃\t\t"

                     + today_map.getNamedItem("text").getNodeValue()

                     + "\t\t发布时间："

                     + today_map.getNamedItem("date").getNodeValue() + "\n");

             NodeList list = doc.getElementsByTagName("yweather:forecast");

             System.out.println("未来五天天气情况：");

             for (int i = 0; i < list.getLength(); i++) {

                 NamedNodeMap map = list.item(i).getAttributes();

                 System.out.println(map.getNamedItem("day").getNodeValue()

                         + "\t最低气温：" + map.getNamedItem("low").getNodeValue()

                         + "℃" + "\t最高气温："

                         + map.getNamedItem("high").getNodeValue() + "℃" + "\t"

                         + map.getNamedItem("text").getNodeValue());

             }

         } catch (Exception e) {

             // TODO Auto-generated catch block

             e.printStackTrace();

         }

     }

     public Document stringToDOM(InputStream input) {

         try {

             DocumentBuilder db = DocumentBuilderFactory.newInstance()

                     .newDocumentBuilder();

             Document doc = db.parse(input);

             return doc;

         } catch (Exception e) {

             // TODO Auto-generated catch block

             e.printStackTrace();

             return null;

         }

     }

     public static void main(String[] args) {

         Test test = new Test();

         try {

             String woeid = test.getWOEID("meizhou");

             test.getWeather(woeid);

             System.out.println("From yahoo!");

         } catch (Exception e) {

             // TODO Auto-generated catch block

             e.printStackTrace();

         }

     }

 }