用asp.net和xml做的新闻更新系统

2022-07-15 80酷酷网 80kuku.com

　　asp.net|xml

读了很多关于.net的文章，也看了许多关于xml的资料，我已经深深的被他们的魅力所吸引。在网上的论坛中，大家对于.net的讨论更加火热一些，而我们的同事从微软回来后告诉我，其实xml是一个比.net更好的东西。包括其中的xslt，其未来要远远比.net要好。

其实争论谁好谁坏本身是没有多大意思的，因为.net本身已经和xml紧密的结合在一起了。这里我就用xml代替数据，写一个新闻发布系统，希望能够起到抛砖引玉的作用，使更多的人能够了解这些最新的技术。

  下面介绍这几个文件。

  contents.xml

  <?xml version="1.0" encoding="GB2312"?>
  <topiclist type="AspCool News">
  <topic>
  <title>aspcool news!</title>
  <href>main.aspx?name=hello</href>
  </topic>
  <topic>
  <title>Resolve a problem</title>
  <href>main.aspx?name=test</href>
  </topic>
  </topiclist>

  这是一个很简单的xml文件，它的作用是用来显示新闻的列表。

  hello.xml

<?xml version="1.0" encoding="GB2312"?>
  <document>
  <title>aspcool news!</title>
  <abstract>test news</abstract>
  <author>feiying</author>
  <content>
  <paragraph>The firet test</paragraph>
  </content>
  </document>

这个文件是用来显示新闻的内容，其中各个意思大家一看就明白，我就不在这儿多说了。

下面给大家看新闻列表显示的页面。
news.aspx

<% Import Namespace="System"%>
<% Page Language="C#" Debug="true" codepage="936"%>
<% Import Namespace="System.IO" %>
<% Assembly Name="System.Xml" %>
<% Import Namespace="System.Xml" %>
<% Import Namespace="System.Xml.Xsl" %>
<html>
<head>
<title>
</title>
<script language="c#" runat="server">
public string xslt()
{
StringWriter writer = new StringWriter();
//装入xml对象
XmlDocument xmldoc= new XmlDocument();
xmldoc.Load(Server.MapPath("Contents.xml"));
//装入xsl对象
XslTransform xsldoc = new XslTransform();
xsldoc.Load(Server.MapPath("news.xsl"));
//把xml转化成html页面
DocumentNavigator nav= new DocumentNavigator(xmldoc);
xsldoc.Transform(nav,null,writer);
return writer.ToString();

}
</script>
</head>
<body>
<%=xslt()%>
<p align="center">该程序由<a language="c#" runat="server">
public string xslt()
{
StringWriter writer = new StringWriter();

XmlDocument xmldoc= new XmlDocument();
xmldoc.Load(Server.MapPath(Request["name"] +".xml"));

XslTransform xsldoc = new XslTransform();
xsldoc.Load(Server.MapPath("main.xsl"));

DocumentNavigator nav= new DocumentNavigator(xmldoc);
xsldoc.Transform(nav,null,writer);
return writer.ToString();

}
</script>
</head>
<body>
<%=xslt()%>
<p align="center">该程序由<a language="C#" runat="server">

public void Button1_Click(object sender, System.EventArgs e)
   {
   //判断文件是否存在
   if(File.Exists(Server.MapPath(TextBox1.Text +".xml")))
   {
   Response.Write("文件名已经存在，请重选文件名。");
   Response.End() ;

   }
   else
   {   XmlNode currNode;
   XmlDocument xmldoc = new XmlDocument();
   xmldoc.Load(Server.MapPath("contents.xml"));

   string InsStr="<topic><title>"+TextBox2.Text+"</title><href>main.aspx?name="+TextBox1.Text+"</href></topic>";
   XmlDocumentFragment docFrag = xmldoc.CreateDocumentFragment();
   docFrag.InnerXml = InsStr;

   currNode = xmldoc.DocumentElement;
   currNode.InsertAfter(docFrag, currNode.LastChild);
   //save the output to a file
   xmldoc.Save (Server.MapPath("contents.xml"));

   //把TextBox5中的文件换成符合xml格式的内容。
   string xmlfile =TextBox5.Text.Replace("&","&");
   xmlfile = xmlfile.Replace("<","<");
   xmlfile = xmlfile.Replace(">",">");
   xmlfile = xmlfile.Replace( """""",""");
   xmlfile = xmlfile.Replace("'","'");
   xmlfile = xmlfile.Replace ("\n","</paragraph><paragraph>");

   //把数据写入新建的xml文件中去。
   XmlDocument doc = new XmlDocument();
   doc.LoadXml ("<?xml version='1.0' encoding='GB2312'?><document><title>"+TextBox2.Text +"</title><abstract>"+TextBox4.Text +"</abstract><author>"+TextBox3.Text +"</author><content><paragraph>"+xmlfile+"</paragraph></content></document>");
   doc.Save (Server.MapPath(TextBox1.Text +".xml"));
   Response.Write("You hava input the article!");
   TextBox1.Text="";
   TextBox2.Text="";
   TextBox3.Text="";
   TextBox4.Text="";
   TextBox5.Text="";

   }

   //向目录文件中写数据

   }
   public void Button2_Click(object sender, System.EventArgs e)
   {}
   </script>
   <meta content="Internet Explorer 5.0" name=vs_targetSchema>
   <meta content="Microsoft Visual Studio 7.0" name=GENERATOR>
   <meta content=C# name=CODE_LANGUAGE>
   </HEAD>
   <body MS_POSITIONING="GridLayout">
   <form runat="server">
   <FONT face=宋体>
   <asp:label id=Label1 100; LEFT: 230px; POSITION: absolute; TOP: 27px" runat="server" Height="28px" Width="156px">
   asp酷技术资讯网网站内容发布系统
   </asp:label>
   <asp:label id=Label2 101; LEFT: 110px; POSITION: absolute; TOP: 68px" runat="server" Height="25px" Width="65px">
   文件名：
   </asp:label>
   <asp:textbox id=TextBox1 102; LEFT: 255px; POSITION: absolute; TOP: 64px" runat="server" Height="33px" Width="178px" >
   </asp:textbox>
   <asp:label id=Label3 103; LEFT: 108px; POSITION: absolute; TOP: 126px" runat="server" Height="36px" Width="86px">
   文章名称：
   </asp:label>
   <asp:textbox id=TextBox2 104; LEFT: 256px; POSITION: absolute; TOP: 114px" runat="server" Height="37px" Width="177px">
   </asp:textbox>
   <asp:label id=Label4 105; LEFT: 114px; POSITION: absolute; TOP: 183px" runat="server" Height="31px" Width="89px">
   作者：
   </asp:label>
   <asp:textbox id=TextBox3 106; LEFT: 256px; POSITION: absolute; TOP: 183px" runat="server" Height="36px" Width="179px">
   </asp:textbox>
   <asp:label id=Label5 107; LEFT: 114px; POSITION: absolute; TOP: 241px" runat="server" Height="51px" Width="81px">
   摘要：
   </asp:label>
   <asp:textbox id=TextBox4 108; LEFT: 256px; POSITION: absolute; TOP: 245px" runat="server" Height="36px" Width="179px">
   </asp:textbox>
   <asp:label id=Label6 109; LEFT: 116px; POSITION: absolute; TOP: 315px" runat="server" Height="36px" Width="78px">
   内容：
   </asp:label>
   <asp:textbox id=TextBox5 110; LEFT: 259px; POSITION: absolute; TOP: 303px" runat="server" Height="95px" Width="252px" textmode="MultiLine">
   </asp:textbox>
   </FONT>   <INPUT id=Button2 113; LEFT: 343px; WIDTH: 40px; POSITION: absolute; TOP: 430px; HEIGHT: 24px" type=button value=重置 name=Button2 runat="server" OnServerClick="Button2_Click" DESIGNTIMEDRAGDROP="59">




   <div id=mess runat=server>
   </div>


   <input type="button" value="提交" OnServerClick="Button1_Click" runat="server" ID="Button1" NAME="Button1" 112; LEFT: 268px; POSITION: absolute; TOP: 430px">
   </form>
   </body>
</HTML>

此程序在.net beta2 build 9148下测试通过。(完)