有的时候我们需要在html显示xml,比如我们修改了xml,点击保存,需要在页面显示xml源码,让我们知道xml已经修改了,最好的方法是把xml放到pre元素中,但是会发现没有换行,全部显示一行,肯定很难看,所以我做了一个迭代xmlDOM的函数来格式显示xml的函数,
迭代函数思路:
1.每个xml文件时有无数个兄弟节点组成,但是终有最后截止的一个,那么循环结束的标志就是当一个节点没有兄弟节点时,循环就结束,
那么可以循环兄弟节点,于是有循环兄弟节点函数
2每个节点可能有子节点,子节点也可能有兄弟子节点,这个时候利用循环兄弟节点函数,循环节点的第一个子节点,
效果图:
主要代码:
private void getXMLStr(XmlDocument xmlDoc) { foreach (XmlNode node in xmlDoc.ChildNodes) { if (node.NodeType == XmlNodeType.Element) { getNext(node,0); } else { xml = "<div>" + node.OuterXml.Replace("<","<").Replace(">",">"); } } } private void getNext(XmlNode node,int i) { if (node.NextSibling == null)//如果没有兄弟节点 { if (node.HasChildNodes) { //如果有子节点 if (node.FirstChild.NodeType != XmlNodeType.Text) { //getXmlAttribute(node) 获取节点的所有属性 //如果子节点的子节点不是text类型 xml = xml + "<div " + "style='margin-left:" + (i * 20).ToString() + "px' ><" + node.Name +" "+ getXmlAttribute(node) + "></div>"; getNext(node.FirstChild,i + 1); xml = xml + "<div " + "style='margin-left:" + (i * 20).ToString() + "px' ></"+ node.Name +"></div>"; } else { //如果子节点的子节点不是text类型 xml = xml + "<div " + "style='margin-left:" + (i * 20).ToString() + "px' >" + node.OuterXml.Replace("<",">") + "</div>"; } } else { xml = xml + "<div " + "style='margin-left:" + (i * 20).ToString() + "px' >" + node.OuterXml.Replace("<",">") + "</div>"; } } else { if (node.HasChildNodes) { if (node.FirstChild.NodeType != XmlNodeType.Text) { xml = xml + "<div " + "style='margin-left:" + (i * 20).ToString() + "px' ><" + node.Name+" " + getXmlAttribute(node) + "></div>"; getNext(node.FirstChild,i + 1); xml = xml + "<div " + "style='margin-left:" + (i * 20).ToString() + "px' ></"+ node.Name + "></div>"; } else { xml = xml + "<div " + "style='margin-left:" + (i * 20).ToString() + "px' >" + node.OuterXml.Replace("<",">") + "</div>"; } } else { xml = xml + "<div " + "style='margin-left:" + (i*20).ToString() + "px' >" + node.OuterXml.Replace("<",">") + "</div>"; } getNext(node.NextSibling,i); } } private string getXmlAttribute(XmlNode node) { string rtn=string.Empty; foreach (XmlAttribute attr in node.Attributes) { rtn +=" "+ attr.Name + "=" + attr.Value; } return rtn; }
@H_403_19@ 源码:
@H_403_19@showXML.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="showXML.aspx.cs" Inherits="showXML" %> <!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 id="Head1" runat="server"> <title>读取xml</title> <link rel="Stylesheet" type="text/css" href="Css/Common/InputStyle.css" /> <script type="text/javascript" src="Scripts/jquery-1.4.1.min.js"></script> <script type="text/javascript"> function showXml() { $.ajax({ url: 'showXML.aspx?action=create&rnd' + Math.random(),type: 'post',cache: false,async: false,success: function (result) { if (result != '') { result = result.toString(); $("#pre_xml").show().html('').append(result); } else { alert('读取数据失败!'); } } }); } $(document).ready(function () { showXml(); }); function hideXml() { $("#pre_xml").hide(); } </script> </head> <body> <form id="form1" runat="server"> <div> <div class="main"> <div class="button"> <table width="100%"> <tr> <td> <input type="button" id="btn_show" class="two-bu" onclick="showXml();" value="显示"/> <input type="button" id="btn_hide" class="two-bu" onclick="hideXml();" value="隐藏"/> </td> </tr> </table> </div> <div > <pre id="pre_xml" style=" background-color:#A8B7CC; width:500px;" ></pre> </div> </div> </div> </form> </body> </html>
showXML.aspx.cs
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; using System.IO; using System.Xml; using System.Web.UI.HtmlControls; public partial class showXML : System.Web.UI.Page { public string xml = string.Empty; protected void Page_Load(object sender,EventArgs e) { if (!IsPostBack) { } if (Request.QueryString["action"] != null && Request.QueryString["action"].ToString() != "") { switch (Request.QueryString["action"].ToString()) { case "create": Response.Clear(); Response.Write(showXml()); Response.End(); break; default: break; } } } /// <summary> /// 在html显示xml /// </summary> /// <param name="fileName">文件名字</param> private string showXml() { string rtn = string.Empty; string path = Server.MapPath("Xml\\") + "示例_创建" + ".xml"; //xml文件路径 if (File.Exists(path)) { XmlTextReader xmlRead = new XmlTextReader(path);//xml只读类 XmlDocument xmlDoc = new XmlDocument(); xmlDoc.Load(xmlRead); xmlRead.Close(); getXMLStr(xmlDoc); rtn = xml; } return rtn; } private void getXMLStr(XmlDocument xmlDoc) { foreach (XmlNode node in xmlDoc.ChildNodes) { if (node.NodeType == XmlNodeType.Element) { getNext(node,i); } } private string getXmlAttribute(XmlNode node) { string rtn=string.Empty; foreach (XmlAttribute attr in node.Attributes) { rtn +=" "+ attr.Name + "=" + attr.Value; } return rtn; } }
示例_创建.xml源码
注意:xml路径与后天获取的xml的路径要一致,我的路径是程序根目录xml文件夹下
示例_创建.xml源码
<?xml version="1.0" encoding="utf-8" ?> <catalog name="测试" > <cd > <title>11</title> <artist>12</artist> <country>13</country> <company>14</company> <price>15</price> <year>16</year> </cd> <cd> <title>21</title> <artist>22</artist> <country>23</country> <company>24</company> <price>25</price> <year>26</year> </cd> </catalog>