本文實例講述了Java訪問WebService返回XML數據的方法。分享給大家供大家參考。具體如下：
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 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：純java方式訪問遠程WebService接口返回的xml格式的數據保存在本地 */ public class DomXMLString{ private static String SERVICES_HOST = "www.webxml.com.cn"; //遠程WebService接口url private static String NETDATA_URL = "http://webservice.webxml.com.cn/WebServices/WeatherWS.asmx/getRegionProvince"; //訪問遠程WebService接口返回的xml格式的數據保存在本地的絕對路徑 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); } /*返回一個Document對象*/ 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); //具體webService相關 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對象*/ public static InputStream getSoapInputStream(String url){ InputStream inputStream = null; try{ URL urlObj = new URL(url); URLConnection urlConn = urlObj.openConnection(); urlConn.setRequestProperty("Host", SERVICES_HOST); //具體webService相關 urlConn.connect(); inputStream = urlConn.getInputStream(); }catch(MalformedURLException e){ e.printStackTrace(); }catch(IOException e){ e.printStackTrace(); } return inputStream; } /*訪問遠程(WebService)xml數據後返回的xml格式字符串並生成為本地文件*/ 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()); } } }希望本文所述對大家的java程序設計有所幫助。
