帮忙运行下这个源程序代码

cweijiaweil 2009-11-02 09:54:32

为什么我电脑看不到结果？？？？这是源代码
html文件代码:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"



  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">



<html xmlns="http://www.w3.org/1999/xhtml">



<head>



<title>Sending Request Data Using GET and POST</title>



 



<script type="text/javascript">



var xmlHttp;



 



function createXMLHttpRequest() {



    if (window.ActiveXObject) {



        xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");



    }



    else if (window.XMLHttpRequest) {



        xmlHttp = new XMLHttpRequest();



    }



}



 



function createQueryString() {



    var firstName = document.getElementById("firstName").value;



    var middleName = document.getElementById("middleName").value;



    var birthday = document.getElementById("birthday").value;



 



    var queryString = "firstName=" + firstName + "&middleName=" + middleName



        + "&birthday=" + birthday;



 



    return queryString;



}



 



function doRequestUsingGET() {



    createXMLHttpRequest();



 



    var queryString = "GetAndPostExample?";



    queryString = queryString + createQueryString()



        + "×tamp=" + new Date().getTime();



    xmlHttp.onreadystatechange = handleStateChange;



    xmlHttp.open("GET", queryString, true);



    xmlHttp.send(null);



}



 



function doRequestUsingPOST() {



    createXMLHttpRequest();



 



    var url = "GetAndPostExample?timeStamp=" + new Date().getTime();



    var queryString = createQueryString();



 



    xmlHttp.open("POST", url, true);



    xmlHttp.onreadystatechange = handleStateChange;



    xmlHttp.setRequestHeader("Content-Type",



                  "application/x-www-form-urlencoded;");



    xmlHttp.send(queryString);



}



 



function handleStateChange() {



    if(xmlHttp.readyState == 4) {



        if(xmlHttp.status == 200) {

alert("fghr");

            parseResults();



        }



    }



}



 



function parseResults() {



    var responseDiv = document.getElementById("serverResponse");



    if(responseDiv.hasChildNodes()) {



        responseDiv.removeChild(responseDiv.childNodes[0]);



    }



    var responseText = document.createTextNode(xmlHttp.responseText);



    responseDiv.appendChild(responseText);



}



 



</script>



</head>



 



<body>



  <h1>Enter your first name, middle name, and birthday:</h1>



 



  <table>



    <tbody>



        <tr>



            <td>First name:</td>



            <td><input type="text" id="firstName"/></td>



        </tr>



        <tr>



            <td>Middle name:</td>



            <td><input type="text" id="middleName"/></td>



        </tr>



        <tr>



            <td>Birthday:</td>



            <td><input type="text" id="birthday"/></td>



        </tr>



    </tbody>



 



  </table>



 



  <form action="#">



    <input type="button" value="Send parameters using GET" onclick="doRequestUsingGET();"/>



 



 





    <input type="button" value="Send  POST"  onclick="doRequestUsingPOST();"/>



  </form>





  <h2>Server Response:</h2>



 



  <div id="serverResponse"></div>



 



</body>



</html>

servlet代码:

import java.io.*;



import java.net.*;



import javax.servlet.*;



import javax.servlet.http.*;



 



public class GetAndPostExample extends HttpServlet {



 



    protected void processRequest(HttpServletRequest request,



            HttpServletResponse response, String method)



    throws ServletException, IOException {



 



        //Set content type of the response to text/xml



        response.setContentType("text/xml");



 



        //Get the user's input



        String firstName = request.getParameter("firstName");



        String middleName = request.getParameter("middleName");



        String birthday = request.getParameter("birthday");



 



        //Create the response text



        String responseText = "Hello " + firstName + " " + middleName



                + ". Your birthday is " + birthday + "."



                + " [Method: " + method + "]";



 



        //Write the response back to the browser



        PrintWriter out = response.getWriter();



        out.println(responseText);



 



        //Close the writer



        out.close();



    }



 



    protected void doGet(HttpServletRequest request, HttpServletResponse response)



    throws ServletException, IOException {



        //Process the request in method processRequest



        processRequest(request, response, "GET");



    }



 



    protected void doPost(HttpServletRequest request, HttpServletResponse response)



    throws ServletException, IOException {



        //Process the request in method processRequest



        processRequest(request, response, "POST");



    }



}