javascript读取XML文件实现程序

1、通过JS读取XML文件，主要是判断各个浏览器　

View Code

// 加载xml文档
       var loadXML = function (xmlFile) {
            var xmlDoc;
            if (window.ActiveXObject) {
                xmlDoc = new ActiveXObject('Microsoft.XMLDOM');//IE浏览器
                xmlDoc.async = false;
                xmlDoc.load(xmlFile);
            }
            else if (isFirefox=navigator.userAgent.indexOf("Firefox")>0) { //火狐浏览器
            //else if (document.implementation && document.implementation.createDocument) {//这里主要是对谷歌浏览器进行处理
                xmlDoc = document.implementation.createDocument('', '', null);
                xmlDoc.load(xmlFile);
            }
            else{ //谷歌浏览器
              var xmlhttp = new window.XMLHttpRequest();
                xmlhttp.open("GET",xmlFile,false);
                xmlhttp.send(null);
                if(xmlhttp.readyState == 4){
                xmlDoc = xmlhttp.responseXML.documentElement;
                }
            }

            return xmlDoc;
        }

        // 首先对xml对象进行判断
      var  checkXMLDocObj = function (xmlFile) {
            var xmlDoc = loadXML(xmlFile);
            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 = '../err.html';

            }
            return xmlDoc;
        }

2、将读取到的xml文件中的数据显示到html文档上

View Code
    <script type="text/javascript" language="javascript">
        var xmlDoc = checkXMLDocObj('../openClass.xml');//读取到xml文件中的数据
        var a = document.getElementsByTagName("a");//获取所有的A标签
        $(document).ready(function () {
              var nodes;
            if($.browser.msie){ // 注意各个浏览器之间的区别
             nodes = xmlDoc.getElementsByTagName('collage')[0].childNodes; //读取XML文件中需要显示的数据
             }
             else if (isFirefox=navigator.userAgent.indexOf("Firefox")>0){
                nodes = xmlDoc.getElementsByTagName('collage')[0].children; //读取XML文件中需要显示的数据
             }
             else{
                nodes = xmlDoc.getElementsByTagName('resource');
             }
           
             for (var i = 0; i < a.length; i++) {
                if (a[i].parentNode.nodeName == "SPAN") {
                    for (var j = 0; j < nodes.length; j++) {
                        var resource = nodes[j];
                        var url = resource.getAttribute('url');
                        var href=$(a[i]).attr("href");
                        if (href == url) {
                            var count = resource.getAttribute('click');
                            var span = document.createElement("div");
                            var str = document.createTextNode("点击率：" + count);
                            span.appendChild(str);
                            var div = a[i].parentNode.parentNode;
                            div.appendChild(span);
                            break;
                        }
                    }
                }
            }
        });
                $(function(){ //通过get请求，将点击率增加
                 $(a).mousedown(function(){
                             var href = $(this).attr("href");
                            $.get("../receive.ashx",{url:href,rd:Math.random()}, function (msg) {
                           
                            });
                        })
        }) 
    </script>　　

3、通过更新ashx文件在服务器上更新对应的xml文件

public void ProcessRequest(HttpContext context)
    {
        context.Response.ContentType = "text/plain";
        string src = context.Request.QueryString["url"];
        string path = context.Server.MapPath("openClass.xml"); //打开xml文件
        XmlDocument xmlDoc = new XmlDocument();
        xmlDoc.Load(path); //注意不能用Xmlload()方法
        XmlNodeList nodeslist = xmlDoc.SelectNodes("/collage/resource"); //找到对应的节点
        foreach (XmlNode node in nodeslist)
        {
            XmlElement xe = (XmlElement)node;
            if (xe.GetAttribute("url") == src)
            {
                int count = int.Parse(xe.GetAttribute("click"));
                count = count + 1;
                xe.SetAttribute("click", count.ToString()); //更新内容
            }
        }
        xmlDoc.Save(path); //保存
      
    }