Ajax 解析 xml(jquery)
利用Ajax解析Servlet传送到前端的XMLimport javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.ServletException;
import java.io.IOException;
import java.io.PrintWriter;
/**
* Created by IntelliJ IDEA.
* User: db2admin
* Date: 2011-1-15
* Time: 21:04:04
* To change this template use File | Settings | File Templates.
*/
public class AjaxXmlServlet extends HttpServlet {
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
request.setCharacterEncoding("UTF-8");
String username = request.getParameter("username");
//返回xml格式的数据
response.setContentType("text/xml;charset=UTF-8");
System.out.println("AjaxXmlServlet");
StringBuilder sb = new StringBuilder();
PrintWriter pw = response.getWriter();
sb.append("<messages>");
if(username != null || username.length() > 0){
if("uuu".equals(username)){
sb.append("<message>");
sb.append("<resname>对不起</resname>");
sb.append("<res>用户名不可以可以使用</res>");
sb.append("</message>");
}else{
sb.append("<message>");
sb.append("<resname>恭喜</resname>");
sb.append("<res>用户名可以使用</res>");
sb.append("</message>");
}
}else{
sb.append("<message>");
sb.append("<resname>对不起</resname>");
sb.append("<res>用户名为空</res>");
sb.append("</message>");
}
sb.append("</messages>");
pw.write(sb.toString());
}
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
this.doPost(request,response);
}
}
jsp
<%--
Created by IntelliJ IDEA.
User: db2admin
Date: 2011-1-15
Time: 19:12:10
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>使用jQuery Ajax 与 Servlet 的交互</title>
<script type="text/javascript" src="js/jquery.js"></script>
<script type="text/javascript">
function verify(){
var username = $("#username").val();
// alert(username);
$.ajax({
type:"POST",
url:"AjaxXmlServlet",
data:"username=" + username,
dataType:"xml",
error:function(xml){
alert("error loading xml document" + xml);
},
success:function(xml){
alert(xml);
$(xml).find("message").each(function(){
var resname = $(this).find("resname").text();
var res = $(this).find("res").text();
$("#result").html(resname + "--" + res);
});
}
});
}
/* function callback(data){
var jqueryObj = $(data);
var message = jqueryObj.children();
var message = jqueryObj.find("res");
$("#result").html(message.text());
}*/
</script>
</head>
<body>
<input type="text" id="username" />
<input type="button" value="提交"/>
<div id="result"></div>
</body>
</html>
页:
[1]