纯java方式访问远程WebService接口返回的xml格式的数代码,Java代码库,德仔网

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【Java】纯java方式访问远程WebService接口返回的xml格式的数

作者: / 发布于2017/9/21/ 303

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 = "D:/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());
		}

	}

}

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