html 如何读取 xml

可以用javascript读取xml数据

实例如下:

首先:xml文件(tree.xml)内容如下:

<?xml version="1.0" encoding="gb2312"?>

<treeview>

<tree id="p1">

<text>山东省</text>

<target>_blank</target>

<title>省份</title>

<link></link>

<tree id="p1-1">

<text>威海市</text>

<target>_blank</target>

<title>城市</title>

<link></link>

</tree>

<tree id="p1-2">

<text>烟台市</text>

<target>_blank</target>

<title>城市</title>

<link></link>

<node id="p1-2-1">

<text>长夼村</text>

<target>_blank</target>

<title>乡镇</title>

<link>/</link>

</node>

</tree>

<node id="p1-3">

<text>富镇</text>

<target>_blank</target>

<title>乡镇</title>

<link>/</link>

</node>

</tree>

<tree id="p2">

<text>河北省</text>

<target>_blank</target>

<title>省份</title>

<link></link>

<tree id="p2-1">

<text>泊头市</text>

<target>_blank</target>

<title>城市</title>

<link></link>

<node id="p2-1-1">

<text>郊河</text>

<target>_blank</target>

<title>乡镇</title>

<link>/</link>

</node>

</tree>

<tree id="p2-2">

<text>石家庄</text>

<target>_blank</target>

<title>城市</title>

<link></link>

</tree>

</tree>

<tree id="p3">

<text>浙江省</text>

<target>_blank</target>

<title>省份</title>

<link></link>

<tree id="p3-1">

<text>杭州市</text>

<target>_blank</target>

<title>城市</title>

<link></link>

<node id="p3-1-1">

<text>某镇</text>

<target>_blank</target>

<title>乡镇</title>

<link>/</link>

</node>

</tree>

<tree id="p3-2">

<text>温州市</text>

<target>_blank</target>

<title>城市</title>

<link></link>

<node id="p3-2-1">

<text>某镇</text>

<target>_blank</target>

<title>乡镇</title>

<link>/</link>

</node>

</tree>

</tree>

</treeview>

//////////////////////////////////////////////////////

然后:javascript函数实现:(文件名称:tree.htm)

<script Language="JavaScript">

var HTML = "";

var space = "";

var blank = " ";

function getSubject()

{

var xmlDoc;

if(window.ActiveXObject)

{

//获得操作的xml文件的对象

xmlDoc = new ActiveXObject('Microsoft.XMLDOM');

xmlDoc.async = false;

xmlDoc.load("tree.xml");

if(xmlDoc == null)

{

alert('您的浏览器不支持xml文件读取,于是本页面禁止您的操作,推荐使用IE5.0以上可以解决此问题!');

window.location.href='/Index.aspx';

return;

}

}

//解析xml文件,判断是否出错

if(xmlDoc.parseError.errorCode != 0)

{

alert(xmlDoc.parseError.reason);

return;

}

//获得根接点

var nodes = xmlDoc.documentElement.childNodes;

//得到根接点下***有子接点个数,并循环

for(var i=0; i<nodes.length; i++)

{

//如果接点名为 tree

if(nodes(i).nodeName == "tree")

{

readTree(nodes(i));

}

//如果接点名为 node

else if(nodes(i).nodeName == "node")

{

readNode(nodes(i));

}

}

//删除对象

delete(xmlDoc);

//显示HTML

window.show.innerHTML = HTML;

return;

}

//读Tree节点

function readTree(cI)

{

var nodes = cI.childNodes;

var menuHTML = space;

menuHTML += blank;

//得到超级链接

menuHTML += "<a href='";

//如果该节点的连接属性不为空,则连接

if(cI.selectNodes("link")(0).text != "")

{

menuHTML += cI.selectNodes("link")(0).text;

}

//否则为空链接

else

{

menuHTML += "#";

}

//目标

if(cI.selectNodes("target")(0).text != "")

{

menuHTML += " target='"+cI.selectNodes("target")(0).text;

menuHTML += "'";

}

//点击菜单事件,调用divshow(vid)函数

menuHTML += " onclick=javascript:divshow('"+cI.getAttribute("id")+"');";

//得到节点标题

menuHTML += " title='";

menuHTML += cI.selectNodes("title")(0).text;

//结束

menuHTML += "'>";

//得到节点的正文

menuHTML += cI.selectNodes("text")(0).text;

menuHTML += "</a><br>\n";

//将menuHTML设置添加到HTML字符串

HTML += menuHTML;

//得到该节点的属性值<span

HTML += "<div id='"+cI.getAttribute("id")+"' style='display:none'>\n";

for(var i=0; i<nodes.length; i++)

{

var tempImg = "";

tempImg += blank;

if(nodes(i).nodeName == "tree")

{

space += tempImg;

readTree(nodes(i));

space = "";

}

else if(nodes(i).nodeName == "node")

{

space += tempImg;

readNode(nodes(i));

}

}

HTML += "</div>\n";

return;

}

//读Node节点

function readNode(cI)

{

var nodeHTML = space;

nodeHTML += blank;

//设置超级链接

nodeHTML += "<a href='";

//得到连接地址

nodeHTML += cI.selectNodes("link")(0).text;

//目标

if(cI.selectNodes("target")(0).text != "")

nodeHTML += "' target='"+cI.selectNodes("target")(0).text;

//得到节点标题

nodeHTML += "' title='";

nodeHTML += cI.selectNodes("title")(0).text;

//结束

nodeHTML += "'>";

//得到节点的正文

nodeHTML += cI.selectNodes("text")(0).text;

nodeHTML += "</a><br>\n";

HTML += nodeHTML;

//HTML += "<div id='"+cI.getAttribute("id")+"'>";

space = "";

return;

}

//操作对象的显示还是隐藏效果

function divshow(vid)

{

if(document.all[vid].style.display == "none")

{

document.all[vid].style.display = "block";

}

else

{

document.all[vid].style.display = "none";

}

return;

}

</script>

<html>

<head>

<meta http-equiv="Content-Type" content="text/html; charset=gb2312">

<title>JS_XML</title>

<style type="text/css">

<!--

body

{

margin-left: 0px;

margin-top: 0px;

margin-right: 0px;

margin-bottom: 0px;

font-size: 9pt;

}

A

{

text-decoration:none;

font-family: "宋体";

font-size: 9pt;

COLOR:#000000;

}

-->

</style>

</head>

<body bgcolor="#EEEEEE" leftmargin="0" topmargin="0">

<div id=show></div>

</body>

<script>

getSubject()

</script>

</html>

//////////////////////////////////////////////////////////

运行,要在同一个路径下!