Android解析服务器端发来的xml数据
16lz
2021-01-23
Android跟服务器交互数据,有时数据量大时,就需要以xml形式的交互数据。这里来实现服务器给Android客户端发送xml数据,Android客户端解析。
服务器端我使用dom4j第三方包来组织xml数据,大家可自行百度下载。而Android客户端则使用XmlPullParser来解析xml数据。
服务器端代码:
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("测试");
String xml = document.asXML(); //用dom4j组织一个XML字符串 response.setContentType("text/xml; charset=UTF-8"); //设置返回值的类型 response.getOutputStream().write(xml.getBytes("UTF-8")); //设置返回值 }public void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {doGet(request,response);}public void init() throws ServletException {// Put your code here}}
Android客户端:
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){}
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