ASP.NET生成静态页面

本文介绍了一种通过ASP.NET生成静态新闻页面的方法,包括创建模板页面、动态生成HTML文件及实现分页功能等关键技术。

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生成静态页面的主要作用是提高页面的访问效率

生成HTML方法主要步骤只有两个:
一、获取要生成的html文件的内容
二、将获取的html文件内容保存为html文件

 

1. 生成一个模板页面:template.html

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN""http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>$Title</title>

</head>
<body>
    <div style="width: 417px; height: 54px; font-size: 30px; color: red;" align="center">
        <br />
    $Title</div>
    <div style="width: 417px; height: 8px; color: gray;">
        浏览<font color="red">1</font>次  $Time</div>
    <div style="width: 417px; height: 100px">
        $Content</div>
    <div style="width: 416px; height: 9px">
        $Pager</div>
    <div style="width: 416px; height: 8px">
    <form id="form1" action="/demo/aaa.aspx" method="post" style="margin:0px">
        <input id="Text1" name="Text1" type="text" /><Img id="Image1" src="../UserInfo/CheckCode.aspx"/><br />
        <textarea  id="CommentContent" cols="20" rows="2"></textarea>
        <br />
        <input id="NewsId" type="hidden" value="$NewsId"/>
        <input id="Button1"  type="submit" value="button" />
        <a href="../Display.aspx?NewsId=$NewsId">查看更多评论</a></form>
        </div>
</body>
</html>

 

2.添加新闻的页面:AddNews.aspx

protected void Button1_Click(object sender, EventArgs e)
    {
        //生成一个字符串:"当前年月日//当前年月日时分秒"
        string strDate = DateTime.Now.ToString("yyMMdd") + "//" + DateTime.Now.ToString("yyyymmddhhmmss");
        //生成一个文件名:"当前年月日//当前年月日时分秒.html"
        string strFileName = strDate + ".html";
        string strTitle = Title.Text;  //接收传过来的新闻标题
        string strContent = Content.Text; //接收传过来的新闻内容
        string[] content = strContent.Split(new Char[] { '|' });//对新闻内容进行拆分,并保存到数组
        int upbound = content.Length;//数组的上限
        DBHelper db = new DBHelper();
        bool success = db.Execute("insert into News(Title,Content,FilePath)values('" + strTitle + "','" + strContent + "','" + strFileName + "')");
        //if (success)
        // Message.Text = "添加成功!";
        /**/
        ///////////////////////////创建当前日期的文件夹开始
        string dir = Server.MapPath("NewsFiles/" + DateTime.Now.ToString("yyMMdd"));//产生"NewsFiles//当前年月日"的物理路径
        //判断该文件夹是否存在   
        if (!Directory.Exists(dir))
        {
            Directory.CreateDirectory(dir);//如果不存在,创建该文件夹
        }
        /**/
        ///////////////////////////创建当前日期的文件夹结束
        try
        {
            for (int i = 0; i < content.Length; i++)
            {
                StringBuilder strhtml = new StringBuilder();

                //获取模板页(NewsFiles/template.html)的位置
                string fileName = Server.MapPath("NewsFiles/") + "template.html";
                //创建StreamReader对象
                using (StreamReader sr = new StreamReader(fileName, Encoding.GetEncoding("gb2312")))
                {

                    String oneline;
                    //读取指定的HTML文件模板,并将内容追加到strhtml中
                    while ((oneline = sr.ReadLine()) != null)
                    {
                        strhtml.Append(oneline);
                    }
                    sr.Close();
                }

                //为标记数组赋值
                //SqlServerDataBase db = new SqlServerDataBase();
                DataSet ds = db.Select("select top 1 NewsId from News order by NewsId desc");//获取id
                string strTable = "<table><tr><td>$upUrl</td><td>$Number</td><td>$downUrl</td></tr></table>";//上下页表格,注意此处的$upUrl(上一页),$Number(页码分页),$downUrl(下一页)
                //这三个是用来替换的。

                string FilePath = "";
                strhtml = strhtml.Replace("$Title", strTitle);
                strhtml = strhtml.Replace("$NewsId", ds.Tables[0].Rows[0]["NewsId"].ToString());
                strhtml = strhtml.Replace("$Time", DateTime.Now.ToString("yyyy/MM/dd"));
                strhtml = strhtml.Replace("$Content", content[i]);

                string strNumber = "";//数字分页1,2,3……
                for (int m = 1; m <= upbound; m++)
                {
                    if (m == 1)//如果是第一页就显示成这个样子:20070524.html而不是20070524_1.html
                        strNumber = strNumber + " [" + "<a href=../" + strDate + ".html" + ">" + m + "</a>" + "] ";
                    else
                    {
                        int n = m - 1;//第三页的连接应该是20070524_2.html,以此类推
                        strNumber = strNumber + " [" + "<a href=../" + strDate + "_" + n + ".html" + ">" + m + "</a>" + "] ";
                    }
                }
                if (upbound == 0)//如果没有分页,就直接按日期时间保存
                {
                    FilePath = "NewsFiles" + "//" + strDate + ".html";
                    strhtml = strhtml.Replace("$Pager", "");
                }
                else//否则按20070524.html、20070524_1.html 这种效果保存
                {
                    if (i == 0)
                        FilePath = "NewsFiles//" + strDate + ".html";
                    else
                        FilePath = "NewsFiles//" + strDate + "_" + i + ".html";

                    if (i == 0)//第一页不显示上一页
                        strTable = strTable.Replace("$upUrl", "");

                    if (i == 1)//上一页分页
                        strTable = strTable.Replace("$upUrl", "<a href=../" + strDate + ".html" + ">上一页</a>");
                    else
                    {
                        int p = i - 1;
                        strTable = strTable.Replace("$upUrl", "<a href=../" + strDate + "_" + p + ".html" + ">上一页</a>");
                    }

                    if (upbound == 1)//如果只有一页,则不显示页码
                        //strNumber="";
                        strTable = strTable.Replace("$Number", "");
                    else
                        strTable = strTable.Replace("$Number", strNumber);//页码替换
                    /**/
                    ////////////////////////
                    if (i == upbound - 1)//最后一页不显示下一页
                        strTable = strTable.Replace("$downUrl", "");

                    if (i != upbound - 1)//下一页分页
                    {
                        int q = i + 1;
                        strTable = strTable.Replace("$downUrl", "<a href=../" + strDate + "_" + q + ".html" + ">下一页</a>");

                    }
                    else
                    {
                        int j = upbound - 1;
                        strTable = strTable.Replace("$downUrl", "<a href=../" + strDate + "_" + j + ".html" + ">下一页</a>");
                    }

                    strhtml = strhtml.Replace("$Pager", strTable);
                }

                //创建文件信息对象
                FileInfo finfo = new FileInfo(Server.MapPath(FilePath));
                //以打开或者写入的形式创建文件流
                using (FileStream fs = finfo.OpenWrite())
                {
                    //根据上面创建的文件流创建写数据流
                    StreamWriter sw = new StreamWriter(fs, System.Text.Encoding.Default);
                    //把新的内容写到创建的HTML页面中
                    sw.WriteLine(strhtml.ToString());
                    sw.Flush();
                    sw.Close();
                }
            }
        }
        catch (Exception err)
        {
            //输出异常信息
            Response.Write(err.ToString());
        }
    }

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