有的時候我們需要在html顯示xml，比如我們修改了xml,點擊保存，需要在頁面顯示xml源碼，讓我們知道xml已經修改了，最好的方法是把xml放到pre元素中，但是會發現沒有換行，全部顯示一行，肯定很難看，所以我做了一個迭代xmlDOM的函數來格式顯示xml的函數，
迭代函數思路：
1.每個xml文件時有無數個兄弟節點組成，但是終有最後截止的一個，那麼循環結束的標誌就是當一個節點沒有兄弟節點時，循環就結束，
那麼可以循環兄弟節點，於是有循環兄弟節點函數
2每個節點可能有子節點，子節點也可能有兄弟子節點，這個時候利用循環兄弟節點函數，循環節點的第一個子節點，
效果圖：
主要代碼：
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)//如果沒有兄弟節點
{
if (node.HasChildNodes)
{
//如果有子節點
if (node.FirstChild.NodeType != XmlNodeType.Text)
{
//getXmlAttribute(node) 獲取節點的所有屬性
//如果子節點的子節點不是text類型
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
{
//如果子節點的子節點不是text類型
xml = xml + "<div " + "style='margin-left:" + (i * 20).ToString() + "px' >" + node.OuterXml.Replace("<", "<").Replace(">", ">") + "</div>";
}
}
else
{
xml = xml + "<div " + "style='margin-left:" + (i * 20).ToString() + "px' >" + node.OuterXml.Replace("<", "<").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("<", "<").Replace(">", ">") + "</div>";
}
}
else
{
xml = xml + "<div " + "style='margin-left:" + (i*20).ToString() + "px' >" + node.OuterXml.Replace("<", "<").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;
}源碼：
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>讀取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('讀取數據失敗！');
}
}
});
}
$(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" οnclick="showXml();" value="顯示"/>
<input type="button" id="btn_hide" class="two-bu" οnclick="hideXml();" value="隱藏"/>
</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顯示xml
/// </summary>
/// <param name="fileName">文件名字</param>
private string showXml()
{
string rtn = string.Empty;
string path = Server.MapPath("Xml\\") + "示例_創建" + ".xml"; //xml文件路徑
if (File.Exists(path))
{
XmlTextReader xmlRead = new XmlTextReader(path);//xml只讀類
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,0);
}
else
{
xml = "<div>" + node.OuterXml.Replace("<","<").Replace(">",">");
}
}
}
private void getNext(XmlNode node,int i)
{
if (node.NextSibling == null)//如果沒有兄弟節點
{
if (node.HasChildNodes)
{
//如果有子節點
if (node.FirstChild.NodeType != XmlNodeType.Text)
{
//getXmlAttribute(node) 獲取節點的所有屬性
//如果子節點的子節點不是text類型
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
{
//如果子節點的子節點不是text類型
xml = xml + "<div " + "style='margin-left:" + (i * 20).ToString() + "px' >" + node.OuterXml.Replace("<", "<").Replace(">", ">") + "</div>";
}
}
else
{
xml = xml + "<div " + "style='margin-left:" + (i * 20).ToString() + "px' >" + node.OuterXml.Replace("<", "<").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("<", "<").Replace(">", ">") + "</div>";
}
}
else
{
xml = xml + "<div " + "style='margin-left:" + (i*20).ToString() + "px' >" + node.OuterXml.Replace("<", "<").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;
}
}
示例_創建.xml源碼
注意：xml路徑與後天獲取的xml的路徑要一致，我的路徑是程序根目錄xml文件夾下
示例_創建.xml源碼
<?xml version="1.0" encoding="utf-8" ?>
<catalog name="測試" >
<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>