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通过 XML HTTP 加载 XML 文件

2016-05-25 14:59 295 查看

新建一个.aspx文件

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="02-通过 XML HTTP 加载 XML 文件.aspx.cs"
Inherits="_02_通过_XML_HTTP_加载_XML_文件" %>

<!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 runat="server">
<title></title>
<script type="text/javascript">
var xmlhttp;
function loadXMLDoc(url)
{
xmlhttp = null;
if (window.XMLHttpRequest)
{// code for IE7, Firefox, Opera, etc.
xmlhttp = new XMLHttpRequest();
}
else if (window.ActiveXObject)
{// code for IE6, IE5
xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
}
if (xmlhttp != null)
{
xmlhttp.onreadystatechange = state_Change;
xmlhttp.open("GET", url, true);
xmlhttp.send(null);
}
else
{
alert("Your browser does not support XMLHTTP.");
}
}

function state_Change()
{
if (xmlhttp.readyState == 4)
{// 4 = "loaded"
if (xmlhttp.status == 200)
{// 200 = "OK"
document.getElementById('A1').innerHTML = xmlhttp.status;
document.getElementById('A2').innerHTML = xmlhttp.statusText;
document.getElementById('A3').innerHTML = xmlhttp.responseText;
}
else
{
alert("Problem retrieving XML data:" + xmlhttp.statusText);
}
}
}
</script>
</head>
<body>
<h2>
Using the HttpRequest Object</h2>
<p>
<b>Status:</b> <span id="A1"></span>
</p>
<p>
<b>Status text:</b> <span id="A2"></span>
</p>
<p>
<b>Response:</b>
<br />
<span id="A3"></span>
</p>
<button onclick="loadXMLDoc('note.xml')">
Get XML</button>
</body>
</html>

note.xml

<?xml version="1.0" encoding="ISO-8859-1"?>
<note>
<to>George</to>
<from>John</from>
<heading>Reminder</heading>
<body>Don't forget the meeting!</body>
</note>

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