JQuery-$.ajax(get)步骤
日期：2014-05-16 浏览次数：20575 次
JQuery--$.ajax(get)方法
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>ajax-get().html</title>
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="this is my page">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<!--<link rel="stylesheet" type="text/css" href="./styles.css">-->
<script language="JavaScript" src="jquery-1.6.1.js"></script>
<script language="JavaScript">
$(function(){
$("#bt1").click(function(){
var name =$("#tx1").val();
var URL = "../validate?name="+name+"&date="+new Date().getTime();
$.ajax({
type:"GET",
url:URL,
dataType:"xml",
success:function(msg){
alert(msg);
var jqueryObj =$(msg) ;//把后台传来的对象转为JQuery对象
alert(jqueryObj);
var content = jqueryObj.text();
$("#sp1").text(content);
}
});
})
})
</script>
</head>
<body>
<p align="center">
6-2 用户注册
</p>
<table align="center">
<tr>
<td>
用户名
</td>
<td>
<input type="text" id="tx1">
<input type="button" id="bt1" value="检测">
</td>
<td>
<span id="sp1"></span>
</td>
</tr>
</table>
</body>
</html>
?后台服务器代码：
package com.wepull.servlet;
import java.io.IOException;
import java.io.PrintWriter;
import java.net.URLDecoder;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class ValidateServlet extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doProcess(request, response);
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doProcess(request, response);
}
private void doProcess(HttpServletRequest request,
HttpServletResponse response) {
try {
request.setCharacterEncoding("utf-8");
response.setCharacterEncoding("utf-8");
String name = request.getParameter("name");
System.out.println("ajax传来的name："+name);
name = URLDecoder.decode(name,"utf-8");
PrintWriter pw = response.getWriter();
if("w".equals(name)){
pw.println("<root>"+name+"：已经被占用"+"</root>");
}else{
pw.println("<root>"+name+"：可以注册"+"</root>");
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
?
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