XML简单操作

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这篇博客主要讲讲自学xml的经验,主要是在asp.net中操作xml.涉及添加节点,删除节点,模糊查询,修改等;

后台代码:

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Xml;
using System.Xml.Xsl;
using System.Text;


public partial class XML_xmlTest : System.Web.UI.Page
{
    private XmlDocument xmlDoc;
    private string  xmlPath=null;


    protected void Page_Load(object sender, EventArgs e)
    {
        xmlPath = MapPath("~/XML/xmlTest.xml");

        xmlDoc = new XmlDocument();
        xmlDoc.Load(xmlPath);
        XmlDataset();
        
        //得到第一个节点
       // GetFirstChild();

        //得到某一节点的值
        //GetContentOfONe();

        //添加一个节点
       // AddNode();

        //删除某个节点
        //DeleteNode();

        //固定查找
        //QueryClearWord();

        //模糊查询
        IndistinctQuery();
        
    }

    //用dom操作xml,并用xml控件显示
    protected void XmlDom()
    {
    
        xml.Document = xmlDoc;

    }

    //用dataset操作xml,用数据控件显示
    protected void XmlDataset()
    {
        DataSet ds = new DataSet();
        ds.ReadXml(MapPath("~/XML/xmlTest.xml"));
        Repeater1.DataSource = ds.Tables[0].DefaultView;
        Repeater1.DataBind();
    }

    //得到第一个节点的值(注意是innertext)
    protected void GetFirstChild()
    {
        XmlNode xmlNode = xmlDoc.DocumentElement.FirstChild;
        if (xmlNode != null)
        { 
           author.Text = xmlNode["author"].InnerText ;
           title.Text = xmlNode["title"].InnerText;
           content.Text = xmlNode["content"].InnerText;
        }

    }

    //查看某一节点的内容
    protected void GetContentOfONe()
    {
        XmlNodeList node = xmlDoc.DocumentElement.ChildNodes;
        StringBuilder sb = new StringBuilder();
        sb =sb.Append("<h5>查看某一节点的值</h5>");
        for (int i = 0; i < node.Count; i++)
        {
            sb = sb.Append("<br/>author:" + node[i]["author"].InnerText + "<br/>title:" + node[i]["title"].InnerText + "<br/>content:" + node[i]["content"].InnerText);
        }
        Response.Write(sb);
     
       
       
    }

    //添加一个节点
    protected void AddNode()
    {
        //创建根节点下的新节点newElement
        XmlElement newElement = xmlDoc.CreateElement("poems");
        //创建newElement下的新节点
        XmlElement nlAuthor = xmlDoc.CreateElement("author");
        XmlElement nlTitle = xmlDoc.CreateElement("title");
        XmlElement nlContent = xmlDoc.CreateElement("content");
        //为三个节点赋值
        nlAuthor.InnerText = "莫言";
        nlTitle.InnerText = "丰乳肥臀";
        nlContent.InnerText = "好家伙,获得今年的诺贝尔文学奖";

        //将三个新节点附加到newElement上
        newElement.AppendChild(nlAuthor);
        newElement.AppendChild(nlTitle);
        newElement.AppendChild(nlContent);
        //将newElement附加到根节点上
        xmlDoc.DocumentElement.AppendChild(newElement);
       
        //规定插入的位置(第一个节点之后/前)
        //xmlDoc.InsertAfter(newElement, xmlDoc.ChildNodes[0]);
        //xmlDoc.InsertBefore(newElement,xmlDoc.ChildNodes[0]);

        //默认是放在最后

        //存盘
        xmlDoc.Save(xmlPath);


    }

    //删除特定节点
    protected void DeleteNode()
    {
        int count = xmlDoc.DocumentElement.ChildNodes.Count;
        XmlNode node = xmlDoc.DocumentElement.ChildNodes[count - 1];

        //找到要删除节点的父节点
        node.ParentNode.RemoveChild(node);
        xmlDoc.Save(xmlPath);
    }

    protected void QueryClearWord()
    {
        //注意:xmlDoc.Documnet是得到xmlDoc的根(smallfoolsRoot)

       // XmlNodeList node = xmlDoc.SelectNodes("smallfoolsRoot/poems[author='莫言']");
        XmlNodeList node = xmlDoc.DocumentElement.SelectNodes("poems[author='莫言']");
        StringBuilder sb = new StringBuilder();
        sb = sb.Append("莫言的书有:<br/>");
        for (int i = 0; i < node.Count; i++)
        {
            sb=sb.Append(i+node[i]["content"].InnerText+"<br/>");
        }
        sb = sb.Append("end");
        Response.Write(sb);
    }

    
    //模糊查询
    protected void IndistinctQuery()
    {
        XmlNodeList nodelist = xmlDoc.DocumentElement.SelectNodes("poems[contains(content,1)]");
        StringBuilder sb = new StringBuilder();
        sb = sb.Append("模糊查询:<br/>");
        for (int i = 0; i < nodelist.Count;i++ )
        {
            sb = sb.Append(i+nodelist[i]["content"].InnerText+"<br/>");
        }
        Response.Write(sb);
    
    
    }


}

前台比较简单:

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="xmlTest.aspx.cs" Inherits="XML_xmlTest" %>

<!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>无标题页</title>  
</head>

<body>
    <form id="form1" runat="server">
    <div>
     <h1> 1:显示xml中的数据 </h1>  
    一:直接用xml控件显示xml数据<br />
    <asp:Xml DocumentSource="~/XML/xmlTest.xml" runat="server" ></asp:Xml><br />
    </div>
    <div>
    二:用Dom操作,并用xml控件操作数据<br />
    <asp:Xml runat="server"  ID="xml"></asp:Xml><br />
    </div>
    <div>
    三:用dataset操作,用数据控件显示数据<br />
        <asp:Repeater ID="Repeater1" runat="server">
        <ItemTemplate>
        <%#Eval("author") %>
        <%#Eval("title") %>
        <%#Eval("content") %>
      <br />
        </ItemTemplate>
        </asp:Repeater>     
    </div>
    
    <h2>2操作xml中的数据  </h2>
    author:<asp:Label ID="author" runat="server" Text=""></asp:Label>title:<asp:Label ID="title" runat="server" Text=""></asp:Label>content:<asp:Label ID="content" runat="server" Text=""></asp:Label>

    </form>
</body>
</html>

 这是xml初始内容:

<?xml version="1.0" encoding="utf-8"?>
<smallfoolsRoot>
  <poems>
    <author>王维</author>
    <title>竹里馆</title>
    <content>独坐幽篁里，弹琴复长啸。深林人不知，明月来相照。</content>
  </poems>
  <poems>
    <author>孟浩然</author>
    <title>宿建德江</title>
    <content>移舟泊烟渚，日暮客愁新。野旷天低树，江清月近人1</content>
  </poems>
  <poems>
    <author>李白</author>
    <title>杜陵绝句</title>
    <content>南登杜陵上，北望五陵间。秋水明落日，流光灭远山</content>
  </poems>
  <poems>
    <author>李白</author>
    <title>望庐山瀑布</title>
    <content>日照香炉生紫烟，遥看瀑布挂前川。飞流直下三千尺，疑是银河落九天。</content>
  </poems>
  <poems>
    <author>李商隐</author>
    <title>锦瑟</title>
    <content>锦瑟无端五十弦，一弦一柱思华年。庄生晓梦迷蝴蝶，望帝春心托杜鹃。沧海月明珠有泪，蓝田日暖玉生烟。此情可待成追忆，只是当时已惘然。</content>
  </poems>
<smallfoolsRoot>