Java访问WebService返回XML数据的方法

Java访问WebService返回XML数据的方法

本文实例讲述了java访问WebService返回XML数据的方法。分享给大家供大家参考。具体如下：

import java.io.IOException;

import java.io.InputStream;

import java.net.MalformedURLException;

import java.net.URL;

import java.net.URLConnection;

import java.io.FileNotFoundExcepbyBYEIition;

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 = "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());

}

}

}

希望本文所述对大家的java程序设计有所帮助。

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