Android解析伺服器端發來的xml資料

Android跟伺服器互動資料，有時資料量大時，就需要以xml形式的互動資料。這裡來實現伺服器給Android用戶端發送xml資料，Android用戶端解析。

伺服器端我使用dom4j第三方包來組織xml資料，大家可自行百度下載。而Android用戶端則使用 XmlPullParser來解析xml資料。

 

伺服器端代碼：

 

package servlet;import java.io.IOException;import java.io.PrintWriter;import java.net.URLDecoder;import java.sql.Connection;import java.sql.ResultSet;import java.sql.Statement;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.dom4j.Document;import org.dom4j.DocumentHelper;import org.dom4j.Element;public class getSms extends HttpServlet {public getSms() {super();}public void destroy() {super.destroy(); // Just puts "destroy" string in log// Put your code here}public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {response.setContentType("text/html; charset=UTF-8" ); request.setCharacterEncoding("UTF-8");

Document document = DocumentHelper.createDocument();                Element persons = DocumentHelper.createElement("persons");                document.add(persons); 

             persons.addElement("address").addText("南京");             persons.addElement("id").addAttribute(1);              persons.addElement("thread_id").addText(2);              persons.addElement("date").addText("2013");              persons.addElement("status").addText(-1);              persons.addElement("type").addText(0);              persons.addElement("body").addText("測試"); 

String xml = document.asXML();  //用dom4j組織一個XML字串          response.setContentType("text/xml; charset=UTF-8"); //設定傳回值的類型          response.getOutputStream().write(xml.getBytes("UTF-8"));    //設定傳回值 }public void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {doGet(request,response);}public void init() throws ServletException {// Put your code here}}

Android用戶端：

String url="http://10.0.2.2:8080/sms_server/servlet/getSms";try{URL u = new URL(url);         HttpURLConnection conn = (HttpURLConnection) u.openConnection();         conn.setRequestMethod("GET");         if (conn.getResponseCode() == 200) {             InputStream in = conn.getInputStream();             XmlPullParser parser = Xml.newPullParser();             parser.setInput(in, "UTF-8");             int event = parser.getEventType();             while (event != XmlPullParser.END_DOCUMENT) {                 Log.i("start_document", "start_document");                 switch (event) {                 case XmlPullParser.START_TAG:                     if ("address".equals(parser.getName())) {                     String address=parser.nextText();                                        }                     if ("id".equals(parser.getName())) {                         int id=parser.getAttributeValue(0);                     }                     if (("thread_id").equals(parser.getName())) {                        String thread_id=parser.nextText();                     }                                     if ("date".equals(parser.getName())) {                        String date=parser.nextText();                     }                     if (("status").equals(parser.getName())) {                         String status=parser.nextText();                     }                     if ("type".equals(parser.getName())) {                         String type=parser.nextText();                     }                     if ("body".equals(parser.getName())) {                         String body=parser.nextText();                     }                     break;                 case XmlPullParser.END_TAG:                     break;                 }                 event = parser.next();             }         }}catch(Exception e){}