JAVA Webservices 实现天气预报

JAVA Webservices 实现天气预报

最近工作有用到web services，而这两天也比较有空，就弄了一个获取天气预报的Util。以前以为这有多难，因为数据来源是个困难。现在用web services的技术，这个就不用管了。说共享也好，说偷也好，总之是达到目的了。网上找了几个提供web services的网站。发现下面这个是相当不错的。
http://www.webxml.com.cn/Webservices/WeatherWebService.asmx

下面就用java把具体的代码写写吧！
这里我采用比较简单的get请求调用，毕竟这也没什么秘密可言，就用最简单的就可以了。
还有，这里很多捕获异常的东西给我去掉了，自己加吧！

public final class WeatherUtil

{    

private static String SERVICES_HOST = "www.webxml.com.cn";

private static String WEATHER_SERVICES_URL = "http://www.webxml.com.cn/WebServices/WeatherWebService.asmx/";

private static String SUPPORT_CITY_URL = WEATHER_SERVICES_URL

+ "getSupportCity?byProvinceName=ALL";

private static String WEATHER_QUERY_URL = WEATHER_SERVICES_URL

+ "getWeatherbyCityName?theCityName=";

private WeatherUtil(){}

public static InputStream getSoapInputStream(String url)

{

InputStream is = null;



URL U = new URL(url);

URLConnection conn = U.openConnection();

conn.setRequestProperty("Host", SERVICES_HOST);

conn.connect();

is = conn.getInputStream();

return is;

}

//取得支持的城市列表

public static ArrayList<String> getSupportCity()

{

ArrayList cityList = null;

Document doc;

DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();

dbf.setNamespaceAware(true);

DocumentBuilder db = dbf.newDocumentBuilder();

InputStream is = getSoapInputStream(SUPPORT_CITY_URL);

doc = db.parse(is);

NodeList nl = doc.getElementsByTagName("string");

int len = nl.getLength();

cityList = new ArrayList<String>(len);

for (int i = 0; i < len; i++)

{

Node n = nl.item(i);

String city = n.getFirstChild().getNodeValue();

cityList.add(city);

}

is.close();

return cityList;

}

//取得城市的天气

public static ArrayList<String> getWeather(String city)

{

ArrayList weatherList = null;

Document doc;

DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();

dbf.setNamespaceAware(true);

DocumentBuilder db = dbf.newDocumentBuilder();

//这里他的编码格式就是这样，我试了几个也没办法。。只好这样混过去了

InputStream is = getSoapInputStream(WEATHER_QUERY_URL

+ new String(city.getBytes("UTF-8"), "GBK"));

doc = db.parse(is);

NodeList nl = doc.getElementsByTagName("string");

int len = nl.getLength();

weatherList = new ArrayList<String>(len);

for (int i = 0; i < len; i++)

{

Node n = nl.item(i);

String weather = n.getFirstChild().getNodeValue();

weatherList.add(weather);

}

is.close();

return weatherList;

}



public static void main(String[] args) throws Exception

{

ArrayList<String> weatherList = WeatherUtil.getWeather("59287");

// ArrayList<String> weatherList = WeatherUtil.getSupportCity();

for (String weather : weatherList)

{

System.out.println(weather);

}

}

}

文章来源 mccxj
鼠中无大将的博客 , 文章地址 http://mccxj.javaeye.com/blog/144161