.NET中XML操作（一）-优快云博客

本文主要介绍了在.NET环境中对XML的使用，包括使用DOM进行基本操作，XML文件的读取，以及添加、修改和删除XML节点的方法。

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又到了今日总结学习的时刻了

今天上了xml和SSH

时间紧迫，快点放毒吧。

1. 掌握ASP.NET中使用DOM对XML的基本操作。

2. 掌握对XML文件的读取操作

3. 掌握对XML文件的添加、修改、删除节点的操作

lab1.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.Xml;

namespace lab1

{

publicpartialclasslab1 : System.Web.UI.Page

{

protectedvoid GetAllNodes(XmlNode node){

Response.Write(" 节点名称");

Response.Write(node.LocalName);

Response.Write(" 节点类型");

Response.Write(node.NodeType);

Response.Write(" 节点值:");

if (node.NodeType == XmlNodeType.Element)

{

Response.Write("");

}

else

{

Response.Write(node.InnerText);

}

if (node.HasChildNodes) {

foreach (XmlNode d in node.ChildNodes) {

GetAllNodes(d);

} }

}

protectedvoid Page_Load(object sender, EventArgs e)

{

XmlDocument xmlDoc = newXmlDocument();

xmlDoc.Load(Server.MapPath("图书信息.xml"));

GetAllNodes(xmlDoc);

}

在spy中写好的xml拖进vs即可

图书信息.xml

<?xmlversion="1.0"encoding="GB2312"?>

<Book>

<BookName>算法与数据结构</BookName>

<Auth>严蔚敏陈文博</Auth>

<Publisher>清华大学出版社</Publisher>

</Book>

<Book>

<BookName>软件工程导论</BookName>

<Publisher>清华大学出版社</Publisher>

</Book>

<Book>

<BookName>XML/JSP网页编程教材</BookName>

<Publisher>北京希望电子出版社</Publisher>

</Book>

<Book>

<BookName>汉语成语字典</BookName>

<Auth>李一华吕德申</Auth>

<Publisher>四川辞书出版社</Publisher>

</Book>

<Book>

<BookName>机电控制工程</BookName>

<Auth>高钟毓王永梁</Auth>

<Publisher>清华大学出版社</Publisher>

</Book>

<Book>

<BookName>英华大字典</BookName>

<Publisher>商务印书馆</Publisher>

</Book>

</Booklist>

在spy中新建asp

<%@ Language=VBScript %>

set xmlDoc=Server.createObject("Microsoft.XMLDom")

dim MyNode,namedNodeMap

xmlDoc.load(Server.MapPath("图书信息.xml"))

'获取节点为信息

getallnodes(xmlDoc)

'子程序，在获得节点信息时

sub getallnodes(node)

dim I

'当前节点信息

Response.write(" 节点名称：")

Response.write(node.nodeName)

Response.write(" 节点类型：")

Response.write(node.nodeTypeString)

Response.write(" 节点值：")

Response.write(node.nodeValue)

'获得子节点信息

if node.childNodes.length<>0 then

for i=0 to node.childNodes.length-1

getallnodes(node.childNodes(i))

end if

end sub

打开webserver服务器。

显示asp。

Iis 节点值是document

Webserver:节点值是Element

lab2.aspx

<%@PageLanguage="C#"AutoEventWireup="true"CodeBehind="lab2.aspx.cs"Inherits="lab1.lab2" %>

<!DOCTYPEhtml>

<htmlxmlns="http://www.w3.org/1999/xhtml">

<headrunat="server">

<metahttp-equiv="Content-Type"content="text/html; charset=utf-8"/>

</head>

<body>

<formid="form1"runat="server">

<div>

BookID: <asp:TextBoxID="textbox1"runat="server"></asp:TextBox>

BookType: <asp:TextBoxID="textbox2"runat="server"></asp:TextBox>

BookName: <asp:TextBoxID="textbox3"runat="server"></asp:TextBox>

Auth: <asp:TextBoxID="textbox4"runat="server"></asp:TextBox>

Publisher: <asp:TextBoxID="textbox5"runat="server"></asp:TextBox>

Price: <asp:TextBoxID="textbox6"runat="server"></asp:TextBox>

PubDate: <asp:TextBoxID="textbox7"runat="server"></asp:TextBox>

Quantity: <asp:TextBoxID="textbox8"runat="server"></asp:TextBox>

<asp:ButtonID="button1"runat="server"OnClick="btn1_click"Text="输出所有节点"/>

<asp:ButtonID="button2"runat="server"OnClick="btn2_click"Text="添加一个节点"style="height: 21px"/>

</div>

</form>

</body>

</html>

lab2.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.Xml;

namespace lab1

{

publicpartialclasslab2 : System.Web.UI.Page

{

protectedvoid Page_Load(object sender, EventArgs e)

{

}

string filePath = "G:\\大三下学期\\15219111419仇飞鸿实验11 .NET中XML操作（一）\\图书信息.xml";

publicvoid getAllElements() {

XmlDocument xmlDoc = new XmlDocument();

xmlDoc.Load(filePath);

XmlNodeList nodelist = xmlDoc.SelectNodes("/Booklist/Book");

Response.Write("所有节点："+" ");

for (int i=0;i<nodelist.Count;i++) {

//Response.Write("BookID:" + nodelist.Item(i).Attributes["BookID"].Value);

//Response.Write("ID:"+nodelist.Item(i).Attributes["ID"].Value);

Response.Write("");

for (int j=0;j<nodelist.Item(i).ChildNodes.Count;j++) {

Response.Write(nodelist.Item(i).ChildNodes[j].Name+":");

Response.Write(nodelist.Item(i).ChildNodes[j].InnerText);

Response.Write(" ");

}

Response.Write(" ");

}

publicvoid getOneElements() {

XmlDocument xmlDoc = new XmlDocument();

xmlDoc.Load(filePath);

XmlNode root = xmlDoc.SelectSingleNode("Booklist");

XmlElement xel = xmlDoc.CreateElement("Book");

xel.SetAttribute("BookID", textbox1.Text.Trim());

XmlElement xesub0 = xmlDoc.CreateElement("BookID");

xesub0.InnerText = textbox2.Text.Trim();

xel.AppendChild(xesub0);

XmlElement xesub1 = xmlDoc.CreateElement("BookType");

xesub1.InnerText = textbox2.Text.Trim();

xel.AppendChild(xesub1);

XmlElement xesub2 = xmlDoc.CreateElement("BookName");

xesub2.InnerText = textbox3.Text.Trim();

xel.AppendChild(xesub2);

XmlElement xesub3 = xmlDoc.CreateElement("Auth");

xesub3.InnerText = textbox4.Text.Trim();

xel.AppendChild(xesub3);

XmlElement xesub4 = xmlDoc.CreateElement("Publisher");

xesub4.InnerText = textbox5.Text.Trim();

xel.AppendChild(xesub4);

XmlElement xesub5= xmlDoc.CreateElement("Price");

xesub5.InnerText = textbox6.Text.Trim();

xel.AppendChild(xesub5);

XmlElement xesub6 = xmlDoc.CreateElement("PubDate");

xesub6.InnerText = textbox7.Text.Trim();

xel.AppendChild(xesub6);

XmlElement xesub7 = xmlDoc.CreateElement("Quantity");

xesub7.InnerText = textbox8.Text.Trim();

xel.AppendChild(xesub7);

root.AppendChild(xel);

xmlDoc.Save(filePath);

getAllElements();

}

protectedvoid btn1_click(object sender, EventArgs e)

{

getAllElements();

}

protectedvoid btn2_click(object sender, EventArgs e)

{

getOneElements();

}

显示全部节点：

添加一个节点：