import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.PrintWriter;
import org.w3c.dom.Document;
import org.w3c.dom.DOMException;
import org.xml.sax.SAXException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
/***

    * @author xuechong

    * 6/11/2010 16:58

    * DomXMLString.java

    * 概述：纯java方式访问远程WebService接口返回的xml格式的数据保存在本地

    */
public class DomXMLString{
      private static String SERVICES_HOST = "www.webxml.com.cn";
      //远程WebService接口url
      private static String NETDATA_URL = "http://webservice.webxml.com.cn/WebServices/WeatherWS.asmx/getRegionProvince";
      //访问远程WebService接口返回的xml格式的数据保存在本地的绝对路径
      private static String LOCAL_PC_SAVEFILE_URL = "E:dataTest/netDataToLocalFile.xml";
private DomXMLString(){}
      public static void main(String[] args) throws Exception{
            Document document = getProvinceCode(NETDATA_URL);
            helloOK(document, LOCAL_PC_SAVEFILE_URL);
      }
      /*返回一个Document对象*/
      public static Document getProvinceCode(String netXMLDataURL){
            Document document = null;
            DocumentBuilderFactory documentBF = DocumentBuilderFactory.newInstance();
            documentBF.setNamespaceAware(true);
            try{
                  DocumentBuilder documentB = documentBF.newDocumentBuilder();
                  InputStream inputStream = getSoapInputStream(netXMLDataURL); //具体webService相关
                  document = documentB.parse(inputStream);
                  inputStream.close();
            }catch(DOMException e){
            e.printStackTrace();
            return null;
      }catch(ParserConfigurationException e){
            e.printStackTrace();
            return null;
      }catch (SAXException e){
      e.printStackTrace();
      return null;
}catch(IOException e){
e.printStackTrace();
return null;
}
return document;
}
/*返回InputStream对象*/
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;
}
/*访问远程(WebService)xml数据后返回的xml格式字符串并生成为本地文件*/
public static void helloOK(Document document, String savaFileURL){
      TransformerFactory transF = TransformerFactory.newInstance();
      try{
            Transformer transformer = transF.newTransformer();
            DOMSource source = new DOMSource(document);
            transformer.setOutputProperty(OutputKeys.ENCODING, "UTF-8");
            transformer.setOutputProperty(OutputKeys.INDENT, "YES");
            PrintWriter pw = new PrintWriter(new FileOutputStream(savaFileURL));
            StreamResult result = new StreamResult(pw);
            transformer.transform(source, result);
            System.out.println("生成xml文件成功!");
      }catch(TransformerConfigurationException e){
            System.out.println(e.getMessage());
      }catch(IllegalArgumentException e){
            System.out.println(e.getMessage());
      }catch(FileNotFoundException e){
      System.out.println(e.getMessage());
}catch(TransformerException e){
System.out.println(e.getMessage());
}
}
}