jquery ajax 提交 xml

---index.jsp
<script type="text/javascript">
    $(function(){
    var data="<?xml version="1.0" encoding="UTF-8"?><users><user><email>[e-mail]</email><username> 曾荣放大@#$~ </username></user></users>";
    $.ajax(
    {
    url:"${pageContext.request.contextPath}/MyServlet",
    dataType:"xml",
    processData: false,
    type:"POST",
    data:data,
    success:function(data){
    alert(data);
    }
   
   
    }
    );
    });
    </script>


------MySerlvet

package com.iknowing.ajaxtest;

import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.UnsupportedEncodingException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;

public class MyServlet extends HttpServlet {

/**
* Destruction of the servlet. <br>
*/
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}

/**
* The doGet method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to get.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
request.setCharacterEncoding("UTF-8");
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();

String xml=readXMLFromRequest(request);

Document xmlDoc=null;
try
{
xmlDoc=DocumentBuilderFactory.newInstance().newDocumentBuilder().parse(new ByteArrayInputStream(xml.getBytes("8859_1")));
}catch(ParserConfigurationException e)
{
e.printStackTrace();
}catch(SAXException e)
{
e.printStackTrace();
}
NodeList nodeList=xmlDoc.getElementsByTagName("user");
NodeList nodeList1= nodeList.item(0).getChildNodes();
for(int i=0;i<nodeList1.getLength();i++){
Element  node=(Element)nodeList1.item(i);
System.out.println(node.getAttribute("email")) ;
}
out.flush();
out.close();
}


public String readXMLFromRequest(HttpServletRequest request) throws UnsupportedEncodingException
{

StringBuffer xml=new StringBuffer();
String line=null;
try
{
BufferedReader reader=request.getReader();
while((line=reader.readLine())!=null)
{
// xml.append(new String(line.getBytes("8859_1")));
xml.append(line);
}

}catch(Exception e)
{
e.printStackTrace();
}
System.out.println(xml.toString());
return xml.toString();
}


/**
* The doPost method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to post.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {

doGet(request,response);
}

/**
* Initialization of the servlet. <br>
*
* @throws ServletException if an error occurs
*/
public void init() throws ServletException {
// Put your code here
}

}
-----
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
  <servlet>
    <servlet-name>MyServlet</servlet-name>
    <servlet-class>com.iknowing.ajaxtest.MyServlet</servlet-class>
  </servlet>

  <servlet-mapping>
    <servlet-name>MyServlet</servlet-name>
    <url-pattern>/MyServlet</url-pattern>
  </servlet-mapping>
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
</web-app>
------------------