天气接口代码（document方法）

package com.test.action;
import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.util.ArrayList;
import java.util.List;


import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;


import org.w3c.dom.DOMException;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;


public class WeatherUtil {
private static String SERVICES_HOST = "www.webxml.com.cn";
private static String WEATHER_SERVICES_URL = "http://webservice.webxml.com.cn/WebServices/WeatherWS.asmx/";
private static String PROVINCE_CODE_URL = WEATHER_SERVICES_URL
+ "getRegionProvince";
private static String CITY_CODE_URL = WEATHER_SERVICES_URL
+ "getSupportCityString?theRegionCode=";
private static String WEATHER_QUERY_URL = WEATHER_SERVICES_URL
+ "getWeather?theUserID=&theCityCode=";


private WeatherUtil(){}

public static void main(String[] args) throws Exception{
int provinceCode = getProvinceCode("北京"); //3119
int cityCode = getCityCode(provinceCode, "北京"); //974
List<String> weatherList = getWeather(cityCode);
for(String weather:weatherList){
System.out.println(weather);
}
}

public static int getProvinceCode(String provinceName){
Document document;
DocumentBuilderFactory documentBF = DocumentBuilderFactory.newInstance();
documentBF.setNamespaceAware(true);
int provinceCode = 0;
try{
DocumentBuilder documentB = documentBF.newDocumentBuilder();
InputStream inputStream = getSoapInputStream(PROVINCE_CODE_URL); //具体webService相关
document = documentB.parse(inputStream);
NodeList nodeList = document.getElementsByTagName("string"); //具体webService相关
int len = nodeList.getLength();
for(int i = 0; i < len; i++){
Node n = nodeList.item(i);
String result = n.getFirstChild().getNodeValue();
String[] address = result.split(",");
String pName = address[0];
String pCode = address[1];
if(pName.equalsIgnoreCase(provinceName)){
provinceCode = Integer.parseInt(pCode);
}
}
inputStream.close();
}catch(DOMException e){
e.printStackTrace();
}catch(ParserConfigurationException e){
e.printStackTrace();
}catch (SAXException e){
e.printStackTrace();
}catch(IOException e){
e.printStackTrace();
}
return provinceCode;
}

public static int getCityCode(int provinceCode, String cityName){
Document doc;
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
dbf.setNamespaceAware(true);
int cityCode = 0;
try{
DocumentBuilder db = dbf.newDocumentBuilder();
InputStream is = getSoapInputStream(CITY_CODE_URL + provinceCode); //具体webService相关
doc = db.parse(is);
NodeList nl = doc.getElementsByTagName("string"); //具体webService相关
int len = nl.getLength();
for(int i = 0; i < len; i++){
Node n = nl.item(i);
String result = n.getFirstChild().getNodeValue();
String[] address = result.split(",");
String cName = address[0];
String cCode = address[1];
if(cName.equalsIgnoreCase(cityName)){
cityCode = Integer.parseInt(cCode);
}
}
is.close();
}catch(DOMException e){
e.printStackTrace();
}catch(ParserConfigurationException e){
e.printStackTrace();
}catch (SAXException e){
e.printStackTrace();
}catch(IOException e) {
e.printStackTrace();
}
return cityCode;
}

public static InputStream getSoapInputStream(String url){
InputStream inputStream = null;
try{
URL urlObj = new URL(url);
URLConnection urlConn = urlObj.openConnection();
urlConn.setRequestProperty("Host", SERVICES_HOST); //具体webService相关
urlConn.connect();
inputStream = urlConn.getInputStream();
}catch(MalformedURLException e){
e.printStackTrace();
}catch(IOException e){
e.printStackTrace();
}
return inputStream;
}

public static List<String> getWeather(int cityCode){
List<String> weatherList = new ArrayList<String>();
Document document;
DocumentBuilderFactory documentBF = DocumentBuilderFactory.newInstance();
documentBF.setNamespaceAware(true);
try{
DocumentBuilder documentB = documentBF.newDocumentBuilder();
InputStream inputStream = getSoapInputStream(WEATHER_QUERY_URL + cityCode);
document = documentB.parse(inputStream);
NodeList nl = document.getElementsByTagName("string");
int len = nl.getLength();
for(int i = 0; i < len; i++){
Node n = nl.item(i);
String weather = n.getFirstChild().getNodeValue();
weatherList.add(weather);
}
inputStream.close();
}catch(UnsupportedEncodingException e){
e.printStackTrace();
}catch (DOMException e){
e.printStackTrace();
}catch (ParserConfigurationException e){
e.printStackTrace();
}catch(SAXException e){
e.printStackTrace();
} catch (IOException e){
e.printStackTrace();
}
return weatherList;
}

}