個人編寫的Webserivce調用天氣預報 (及介面比較)

不想浪費了自己寫的一個Utility,發布上來,以後可以用

下面是目前找的一些天氣WebService的對比較: 只有Webxml那個ok點,但免費的有限:

 

fhs.6617.com     打不開     http://fhs.6617.com/getweather.asmx?WSDL

www.webxml.com.cn     穩定,免費的有數量及速度限制 250次/24小時 450ms/request    

http://www.webxml.com.cn/WebServices/IpAddressSearchWebService.asmx?wsdl

www.ayandy.com     免費未測試,可以擷取資料少    

http://www.ayandy.com/Service.asmx?op=getWeatherbyCityName

soft.wopos.com     打不開     http://soft.wopos.com/webservice/weather.asmx
webservice.k-zone.cn     打不開    

 

 

有了這些資料就可以用介面來寫調用了.

下面是自己寫的一個Utility,但後來發現不只是一個簡單的Utility,老大是要我寫一個Webservice天氣伺服器.不想浪費了這個Utility

裡面有緩衝的思想(主要解決請求數量限制).  隊列請求(主要解決請求速度限制). 自動更新緩衝(讓緩衝有一個到期時限)

 

package cn.easier.webservice.weather;<br />import java.util.HashMap;<br />import java.util.LinkedList;<br />import java.util.Map;<br />import java.util.Queue;<br />import java.util.Set;<br />import org.apache.log4j.Logger;<br />import webxml.WeatherWebServiceStub;<br />import webxml.WeatherWebServiceStub.ArrayOfString;<br />import webxml.WeatherWebServiceStub.GetWeatherbyCityName;<br />import webxml.WeatherWebServiceStub.GetWeatherbyCityNameResponse;<br />/**<br /> * 天氣介面<br /> *<br /> * @author Vange<br /> *<br /> */<br />public class WeatherUtils {<br />/**<br /> * 資料緩衝<br /> */<br />private static Map<String, Object[]> data = new HashMap<String, Object[]>();<br />private static Logger logger = Logger.getLogger(WeatherUtils.class);<br />/**<br /> * 緩衝到期期限,預設為一小時<br /> */<br />private static long expired = 3600 * 1000; // 1800 seconds, half a<br />// hour<br />/**<br /> * 更新所有緩衝的間隔,預設為半小時<br /> */<br />private static long updateCacheInterval = 1800 * 1000;<br />/**<br /> * 請求間隔<br /> */<br />private static int requestInterval = 500; // the interval(millisecond) to<br />// request the<br />// weather server .<br />/**<br /> * 請求隊列<br /> */<br />private static Queue<String> queue = new LinkedList<String>();<br />private static Refresher refresher;<br />static {<br />refresher = new Refresher();<br />refresher.start();<br />}<br />/**<br /> * 關閉自動更新線程<br /> */<br />public static void closeAutoRefresh() {<br />logger.info("close auto refresh");<br />if (refresher != null) {<br />refresher.setStop(true);<br />refresher.interrupt();<br />}<br />}<br />/**<br /> * 擷取資料,根據城市名(如廣州 ,不要帶"市"字)<br /> *<br /> * @param cityName<br /> * @return<br /> */<br />public static WeatherInfo getWeatherByName(String cityName) {<br />logger.debug("want to get data of " + cityName);<br />if (cityName == null)<br />return null;<br />// 讀取緩衝中資料<br />if (data.containsKey(cityName)) {<br />// 判斷緩衝是否已經到期<br />Object[] cache = data.get(cityName);<br />if (cache != null) {<br />WeatherInfo obj = (WeatherInfo) cache[0];<br />long lastUpdateTime = (Long) cache[1];<br />if (obj != null<br />&& lastUpdateTime + expired > System<br />.currentTimeMillis()) {<br />return obj;<br />}<br />}<br />logger.debug(cityName + " 's value is not exists");<br />} else {<br />logger.debug("the key " + cityName + " is not exists");<br />// 如果沒有,直接返回null<br />// 把些請求,加入到請求隊列中,和資料字典中<br />data.put(cityName, null);<br />synchronized (queue) {<br />queue.offer(cityName);<br />}<br />return null;<br />}<br />return null;<br />}<br />/**<br /> * 向介面請求天氣資料<br /> */<br />protected static void requestWeatherInfo() {<br />if (queue.isEmpty())<br />return;<br />String requestCityName = null;<br />synchronized (queue) {<br />requestCityName = queue.poll();<br />}<br />if (requestCityName == null)<br />return;<br />requestWeatherInfo(requestCityName);<br />}<br />/**<br /> * 向介面請求天氣資料 並處理對應的資料<br /> *<br /> * @param requestCityName<br /> */<br />public static WeatherInfo requestWeatherInfo(String requestCityName) {<br />logger.debug("REAL get info from Server : " + requestCityName);<br />try {<br />WeatherWebServiceStub stub = new WeatherWebServiceStub();<br />GetWeatherbyCityName cityname = new GetWeatherbyCityName();<br />cityname.setTheCityName(requestCityName);<br />GetWeatherbyCityNameResponse ret = stub<br />.getWeatherbyCityName(cityname);<br />ArrayOfString cityNameResult = ret.getGetWeatherbyCityNameResult();<br />if (cityNameResult != null) {<br />// logger.debug("get date : " + cityNameResult);<br />String[] returns = cityNameResult.getString();<br />if (returns[1] == null || "".equals(returns[1])) {<br />logger.info("requestCityName is NOT supported ! "<br />+ requestCityName);<br />// 沒有相關資料<br />return null;<br />}<br />// 讀取相關資料<br />WeatherInfo info = new WeatherInfo();<br />info.setCityName(returns[1]);<br />info.setDateAndWeather(returns[6]);<br />info.setTemperature(returns[5]);<br />info.setWind(returns[7]);<br />data.put(requestCityName, new Object[] { info,<br />System.currentTimeMillis() });</p><p>if (logger.isDebugEnabled())<br />logger.debug("ADD CACHE :" + requestCityName);<br />return info;<br />}<br />return null;<br />} catch (Exception e) {<br />e.printStackTrace();<br />logger.error(e.getMessage());<br />}<br />return null;<br />}<br />/**<br /> * 請求更新所有緩衝<br /> */<br />protected static void updateAllWeatherInfo() {<br />logger.debug("update all the weather info");<br />Set<String> keys = data.keySet();<br />synchronized (queue) {<br />for (String key : keys) {<br />queue.offer(key);<br />}<br />}<br />}<br />/**<br /> * 定時重新整理器<br /> *<br /> * @author Vange<br /> *<br /> */<br />private static class Refresher extends Thread {<br />/**<br /> * 停止標識<br /> */<br />private boolean stop = false;<br />private long lastUpdateCache = 0L;<br />@Override<br />public void run() {<br />super.run();<br />while (true) {<br />try {<br />if (stop)<br />break;<br />// 更新每一個資料<br />sleep(requestInterval);<br />requestWeatherInfo();<br />// 更新所有緩衝<br />if (System.currentTimeMillis() > lastUpdateCache<br />+ updateCacheInterval) {<br />lastUpdateCache = System.currentTimeMillis();<br />updateAllWeatherInfo();<br />}<br />} catch (Exception e) {<br />logger.error(e.getMessage());<br />}<br />}<br />}<br />/**<br /> * 設定結束標識<br /> *<br /> * @param b<br /> */<br />public void setStop(boolean b) {<br />this.stop = b;<br />}<br />}<br />}<br />