用ASP.NET和XML做的新闻系统

  • 来源: 互联网 作者: rocket   2008-03-24/14:51
  • 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 href="www.aspcool.comwww.aspcool.comhttp://www.aspcool.com">www.aspcool.com</a>设计制作.


    </p>
    </body>
    </html>

    这个页面完成了从xml通过xslt转化成html文件,也使我对于xslt有了进一步的认识。

    下面是新闻内容显示的页面:


    main.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();
    XmlDocument xmldoc= new XmlDocument();
    xmldoc.Load(Server.MapPath(Request +".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 href="www.aspcool.comwww.aspcool.comhttp://www.aspcool.com">www.aspcool.com</a>设计制作.</p>
    </body>
    </html> 

    这个功能和上面的一样,我在这儿就不多说了。


    最后,大家来看一下最负责的一个页面,这个页面的作用就是用来建立新的xml数据。


    manage.aspx
    <%@ Import Namespace="System.Xml.Xsl" %>
    <%@ Import Namespace="System.Xml" %>
    <%@ Assembly Name="System.Xml" %>
    <%@ Import Namespace="System.IO" %>
    <%@ Page Language="C#" Debug="true" codepage="936"%>
    <%@ Import Namespace="System"%>
    <HTML>
    <HEAD>
    <script 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(""","&apos;");
    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 style="Z-INDEX: 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 style="Z-INDEX: 101; LEFT: 110px; POSITION:
    absolute; TOP: 68px" runat="server" Height="25px" Width="65px">
    文件名:
    </asp:label>
    <asp:textbox id=TextBox1 style="Z-INDEX: 102; LEFT: 255px; POSITION:
    absolute; TOP: 64px" runat="server" Height="33px" Width="178px" >
    </asp:textbox>
    <asp:label id=Label3 style="Z-INDEX: 103; LEFT: 108px; POSITION:
    absolute; TOP: 126px" runat="server" Height="36px" Width="86px">
    文章名称:
    </asp:label>
    <asp:textbox id=TextBox2 style="Z-INDEX: 104; LEFT: 256px; POSITION:
    absolute; TOP: 114px" runat="server" Height="37px" Width="177px">
    </asp:textbox>
    <asp:label id=Label4 style="Z-INDEX: 105; LEFT: 114px; POSITION:
    absolute; TOP: 183px" runat="server" Height="31px" Width="89px">
    作者:
    </asp:label>
    <asp:textbox id=TextBox3 style="Z-INDEX: 106; LEFT: 256px; POSITION:
    absolute; TOP: 183px" runat="server" Height="36px" Width="179px">
    </asp:textbox>
    <asp:label id=Label5 style="Z-INDEX: 107; LEFT: 114px; POSITION:
    absolute; TOP: 241px" runat="server" Height="51px" Width="81px">
    摘要:
    </asp:label>
    <asp:textbox id=TextBox4 style="Z-INDEX: 108; LEFT: 256px; POSITION:
    absolute; TOP: 245px" runat="server" Height="36px" Width="179px">
    </asp:textbox>
    <asp:label id=Label6 style="Z-INDEX: 109; LEFT: 116px; POSITION:
    absolute; TOP: 315px" runat="server" Height="36px" Width="78px">
    内容:
    </asp:label>
    <asp:textbox id=TextBox5 style="Z-INDEX: 110; LEFT: 259px; POSITION:
    absolute; TOP: 303px" runat="server" Height="95px" Width="252px"
    textmode="MultiLine">
    </asp:textbox>
    </FONT>


    <INPUT id=Button2 style="Z-INDEX: 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">
    <br>
    <br>
    <div id=mess runat=server>
    </div>
    <br>
    <input type="button" value="提交" OnServerClick="Button1_Click"
    runat="server" ID="Button1" NAME="Button1" style="Z-INDEX: 112;
    LEFT: 268px; POSITION: absolute; TOP: 430px">
    </form>
    </body>
    </HTML>
     

    此程序在.net beta2 build 9148下测试通过。


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