AJAX实践之与服务器通信

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:
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