?? postingxmlexample.java
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package ajaxbook.chap3;import java.io.*;import javax.servlet.*;import javax.servlet.http.*;import javax.xml.parsers.DocumentBuilderFactory;import javax.xml.parsers.ParserConfigurationException;import org.w3c.dom.Document;import org.w3c.dom.NodeList;import org.xml.sax.SAXException;public class PostingXMLExample extends HttpServlet { protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { String xml = readXMLFromRequestBody(request); Document xmlDoc = null; try { xmlDoc = DocumentBuilderFactory.newInstance().newDocumentBuilder() .parse(new ByteArrayInputStream(xml.getBytes())); } catch(ParserConfigurationException e) { System.out.println("ParserConfigurationException: " + e); } catch(SAXException e) { System.out.println("SAXException: " + e); } /* Note how the Java implementation of the W3C DOM has the same methods * as the JavaScript implementation, such as getElementsByTagName and * getNodeValue. */ NodeList selectedPetTypes = xmlDoc.getElementsByTagName("type"); String type = null; String responseText = "Selected Pets: "; for(int i = 0; i < selectedPetTypes.getLength(); i++) { type = selectedPetTypes.item(i).getFirstChild().getNodeValue(); responseText = responseText + " " + type; } response.setContentType("text/xml"); response.getWriter().print(responseText); } private String readXMLFromRequestBody(HttpServletRequest request){ StringBuffer xml = new StringBuffer(); String line = null; try { BufferedReader reader = request.getReader(); while((line = reader.readLine()) != null) { xml.append(line); } } catch(Exception e) { System.out.println("Error reading XML: " + e.toString()); } return xml.toString(); }}?? 快捷鍵說明
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