***************************************AJAX网页代码****************
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文档</title>
<script language="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="../GetAndPost?";
queryString=queryString+createQueryString() + "&timeStamp=" + new Date().getTime();
xmlHttp.onreadystatechange=handleStateChange;
xmlHttp.open("GET",queryString,true);
xmlHttp.send(null);
}
function doRequestUsingPost()
{
createXMLHttpRequest();
var url="../GetAndPost?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)
{
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>
<form id="form1" name="form1" method="post" action="#">
<p><br />
<br />
<input name="firstName" type="text" id="firstName" />
</p>
<p>
<label>
<input type="text" name="middleName" id="middleName" />
</label>
</p>
<p>
<input name="birthday" type="text" id="birthday" />
</p>
<p> </p>
<p>
<input type="button" name="Submit" value="GET" onclick="doRequestUsingGET();"/>
<input type="button" name="Submit2" value="POST" onclick="doRequestUsingPost();"/>
</p>
<div id="serverResponse"></div>
</form>
</body>
</html>
***********************************Servlet代码*****************
package temp;
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
{
response.setContentType("text/xml");
String firstName=request.getParameter("firstName");
String middleName=request.getParameter("middleName");
String birthday=request.getParameter("birthday");
String responseText="hello:" + firstName + "-" + middleName + "。your birthday is " + birthday + "。" + "[method:" + method + "]";
PrintWriter out=response.getWriter();
out.println(responseText);
out.close();
}
protected void doGet(HttpServletRequest request,HttpServletResponse response) throws ServletException,IOException
{
processRequest(request,response,"GET");
}
protected void doPost(HttpServletRequest request,HttpServletResponse response) throws ServletException,IOException
{
processRequest(request,response,"POST");
}
}
**************************
加上设置字符编码的方法：
response.setHeader("charset","gb2312");
********************************************
看到的说明原文如下：
用AJAX来GET回一个页面时，RESPONSETEXT里面的中文多半会出现乱码，这是因为xmlhttp在处理返回的 responseText的时候，是把resposeBody按UTF-8编码进解码考形成的，如果服务器送出的确实是UTF-8的数据流的时候汉字会正确显示，而送出了GBK编码流的时候就乱了。解决的办法就是在送出的流里面加一个HEADER，指明送出的是什么编码流，这样XMLHTTP就不会乱搞了。
PHP:header('Content-Type:text/html;charset=GB2312');
ASP:Response.Charset("GB2312")
JSP:response.setHeader("Charset","GB2312");
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