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：

复制代码 代码如下:

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");

复制代码 代码如下:

Document document = DocumentHelper.createDocument();

Element persons = DocumentHelper.createElement("persons");

document.add(persons);

复制代码 代码如下:

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");

复制代码 代码如下:

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：

复制代码 代码如下:

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){

}