分类目录归档：软件开发

php页面跳转

发表于 2011 年 4 月 16 日 由 惜分飞

我把blog从http://www.66yj.com/blog迁移到//www.xifenfei.com域名下，当用户访问以前blog地址时，自动跳转到当前blog的对应文章

 
$url_this=strtolower('http://'.$_SERVER["SERVER_NAME"].$_SERVER["REQUEST_URI"]);
 $go_url=str_replace('http://www.66yj.com/blog','//www.xifenfei.com',$url_this);
 header("location:$go_url");
 exit;
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js考试系统时间倒计时

发表于 2010 年 10 月 29 日 由 惜分飞

js实现时分倒计时、悬浮效果

<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
    <title>无标题页</title>
    <meta HTTP-EQUIV="Content-Type" content="text/html; charset=gb2312" />
</head>
<body onload='ChangeTime();scall();'>
<form id="form1">
<!--模拟页面宽度高度-->
<div align="center">
<center>
<table width="770" height="3000" border="0" cellpadding="0" cellspacing="0" bgcolor="#F4F4F4">
<tr>
<td width="100%" valign="top"></td>
</tr>
</table>
</center>
</div>
<!--弹出时间提示-->
<div id="Javascript.RightDiv" style="position: absolute;z-index:1000;width:200px;height:30px;top:-1000px;word-break:break-all;display:none;">
<div id="timeshow" style="width:200px;height:20px;line-height:20px;text-align:center;font-size:12px;color:#000;background-color:#CCC;border:1px solid #333;"></div>
</div>
<SCRIPT LANGUAGE="JavaScript">
//弹出div
var showad = true;
var Toppx = 10;    //上端位置
var AdDivW = 200;   //宽度
var AdDivH = 25;   //高度
var PageWidth = 750; //页面多少宽度象素下正好不出现左右滚动条
var MinScreenW = 1000; //最小屏幕宽度象素
function scall(){
if(!showad){return;}
var Borderpx = ((window.screen.width-PageWidth)/2-AdDivW)/2;
document.getElementById("Javascript.RightDiv").style.display="";
document.getElementById("Javascript.RightDiv").style.top=document.body.scrollTop+Toppx;
document.getElementById("Javascript.RightDiv").style.left=document.body.scrollLeft+document.body.clientWidth-document.getElementById("Javascript.RightDiv").offsetWidth-Borderpx;
}
window.onscroll=scall;
window.onresize=scall;

//在线考试时间提示
var h=1; //设置考试时间(小时单位)  
var m=0.1; //设置考试时间(分钟单位)  
var timeShowId="timeshow"; //设置时间显示层ID  
var TimeNum=h*60*60+m*60;  
var timeStr;  
function ChangeTime()
{
  TimeNum--;
  
    if(TimeNum > 0)
    {
       timeStr=setTimeout("ChangeTime()",1000);
       if(TimeNum<300)
       {
         alert('距离系统自动提交时间还剩5分钟，请尽快做好提交准备');
       }
        if(TimeNum<30)
       {
         alert('距离系统自动提交时间还剩30秒，请马上交卷');
       }
    }
    else
    {  
       //系统提交  完善
    }  
    document.getElementById(timeShowId).innerHTML="系统提示：你的时间还剩<span style=\"color:#FF0000;\">"+Math.floor(TimeNum/60)+"分"+TimeNum%60+"秒</span>";
} 
</SCRIPT>
</form>  
</body >
</html>
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通过web更新网站（1）

发表于 2010 年 10 月 28 日 由 惜分飞

现在维护的网站比较多，经常因为要修改一个小小的东西，要远程登录，或者ftp登录上去下载下来，然后在修改后，再上传上去，总之比较麻烦，我现在总体设想是通过web实现手工的更新网站，既实现通过web下载、上传、删除、编辑。
今天是实现了对整个站点的文件显示，下载和上传到对应目录，为该程序的第一部分
aspx代码

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!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></title>
    <script type="text/javascript">
        function select_dir() {
            var select = document.getElementById("selectType");
            document.getElementById("h_dir").value = select.options[select.selectedIndex].value; ;
        }
    </script>
</head>
<body>
    <form id="form1" runat="server">
    <input id="h_dir" type="hidden" runat="server"/>
    <asp:Label ID="lbl_dir" runat="server" ></asp:Label>
    <asp:Button ID="btn_select" runat="server" Text="查看文件" 
        onclick="btn_select_Click" />
    <div style="width:400px; height:500px; overflow:auto">
        <asp:Label ID="show_file" runat="server" ></asp:Label>
    </div>
    <asp:FileUpload ID="file_up" runat="server" />
    <asp:Button ID="btn_up" runat="server"   Text="上传文件" onclick="btn_up_Click" />
    </form>
</body>
</html>

cs代码

using System;
using System.Collections.Generic;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.IO;
using System.Data;
using System.Threading;

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            string web_file=Server.MapPath(".");
            DirectoryInfo thisOne = new DirectoryInfo(web_file);
           lbl_dir.Text="<select id='selectType' onclick='select_dir();' ><option value='" + System.Web.HttpContext.Current.Server.UrlEncode(web_file) + "'>网站目录</option>" + ListSelectShow(thisOne, 0, "") + "</select>";
           h_dir.Value = System.Web.HttpContext.Current.Server.UrlEncode(web_file);
           if (Request.QueryString["F"]!=null)
           {
                string d_file = System.Web.HttpContext.Current.Server.UrlDecode(Request.QueryString["F"].ToString());
               //求文件名
               string[] fs = d_file.Split('\\');
                string   ext = fs[fs.Length - 1];
               //下载文件
                Page.Response.Clear();
                bool success = ResponseFile(Page.Request, Page.Response, ext, d_file, 1024000);
                if (!success)
                    Page.ClientScript.RegisterStartupScript(this.GetType(), "alert", "alert('下载文件失败，请重试');", true);
                Page.Response.End();
           }
        }
    }
    public  string ListTreeShow(DirectoryInfo theDir, int nLevel, string Rn)//递归目录和 文件，树形结构显示
    {
        if (nLevel == 0)
        {
            FileInfo[] fileInfo = theDir.GetFiles();
            foreach (FileInfo fInfo in fileInfo)
            {                
                Rn += "├";
                Rn += "<a href='Default.aspx?F=";
                Rn = Rn + System.Web.HttpContext.Current.Server.UrlEncode(fInfo.FullName);
                Rn += "'>";
                Rn += fInfo.Name.ToString() + "</a> <br />";
               
            }
        }
        DirectoryInfo[] subDirectories = theDir.GetDirectories();//获得目录
        foreach (DirectoryInfo dirinfo in subDirectories)
        {
            if (nLevel == 0)
            {
                Rn += "├";
            }
            else
            {
                string _s = "";
                for (int i = 1; i <= nLevel; i++)
                {
                    _s += "│&nbsp;";
                }
                Rn += _s + "├";
            }
            Rn += "<b>" + dirinfo.Name.ToString() + "</b><br />";
            FileInfo[] fileInfo = dirinfo.GetFiles();   //目录下的文件
            foreach (FileInfo fInfo in fileInfo)
            {
                if (nLevel == 0)
                {
                    Rn += "│&nbsp;├";
                }
                else
                {
                    string _f = "";
                    for (int i = 1; i <= nLevel; i++)
                    {
                        _f += "│&nbsp;";
                    }
                    Rn += _f + "│&nbsp;├";
                }
                Rn += "<a href='Default.aspx?F=";
                Rn = Rn + System.Web.HttpContext.Current.Server.UrlEncode(fInfo.FullName);
                Rn += "'>";
                Rn += fInfo.Name.ToString() + "</a><br />";
            }
            Rn = ListTreeShow(dirinfo, nLevel + 1, Rn);


        }
        return Rn;
    }

    public static string ListSelectShow(DirectoryInfo theDir, int nLevel, string Rn)//递归目录下拉框显示
    {
        DirectoryInfo[] subDirectories = theDir.GetDirectories();//获得目录
        foreach (DirectoryInfo dirinfo in subDirectories)
        {
            Rn += "<option value=\"" +System.Web.HttpContext.Current.Server.UrlEncode( dirinfo.FullName) + "\" >";
            if (nLevel == 0)
            {
                Rn += "├";
            }
            else
            {
                string _s = "";
                for (int i = 1; i <= nLevel; i++)
                {
                    _s += "│&nbsp;";
                }
                Rn += _s + "├";
            }
            Rn += "" + dirinfo.Name.ToString() + "</option>";
            Rn = ListSelectShow(dirinfo, nLevel + 1, Rn);
        }
        return Rn;
    }
    protected void btn_select_Click(object sender, EventArgs e)
    {
        string first_dir = System.Web.HttpContext.Current.Server.UrlDecode(h_dir.Value);
          DirectoryInfo thisOne = new DirectoryInfo(first_dir);
          show_file.Text = ListTreeShow(thisOne, 0, "");
    }
    public bool ResponseFile(HttpRequest _Request, HttpResponse _Response, string _fileName, string _fullPath, long _speed)//下载文件
    {
        try
        {
            FileStream myFile = new FileStream(_fullPath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
            BinaryReader br = new BinaryReader(myFile);
            try
            {
                _Response.AddHeader("Accept-Ranges", "bytes");
                _Response.Buffer = false;
                long fileLength = myFile.Length;
                long startBytes = 0;

                double pack = 10240; //10K bytes
                //int sleep = 200;   //每秒5次   即5*10K bytes每秒
                int sleep = (int)Math.Floor(1000 * pack / _speed) + 1;
                if (_Request.Headers["Range"] != null)
                {
                    _Response.StatusCode = 206;
                    string[] range = _Request.Headers["Range"].Split(new char[] { '=', '-' });
                    startBytes = Convert.ToInt64(range[1]);
                }
                _Response.AddHeader("Content-Length", (fileLength - startBytes).ToString());
                if (startBytes != 0)
                {
                    //Response.AddHeader("Content-Range", string.Format(" bytes {0}-{1}/{2}", startBytes, fileLength-1, fileLength));
                }
                _Response.AddHeader("Connection", "Keep-Alive");
                _Response.ContentType = "application/octet-stream";
                _Response.AddHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(_fileName, System.Text.Encoding.UTF8));

                br.BaseStream.Seek(startBytes, SeekOrigin.Begin);
                int maxCount = (int)Math.Floor((fileLength - startBytes) / pack) + 1;

                for (int i = 0; i < maxCount; i++)
                {
                    if (_Response.IsClientConnected)
                    {
                        _Response.BinaryWrite(br.ReadBytes(int.Parse(pack.ToString())));
                        Thread.Sleep(sleep);
                    }
                    else
                    {
                        i = maxCount;
                    }
                }
            }
            catch
            {
                return false;
            }
            finally
            {
                br.Close();

                myFile.Close();
            }
        }
        catch
        {
            return false;
        }
        return true;
    }
    protected void btn_up_Click(object sender, EventArgs e)
    {
        if (file_up.HasFile)
        {
            try
            {
                string path = System.Web.HttpContext.Current.Server.UrlDecode(h_dir.Value);
                string file = file_up.FileName;
                file_up.SaveAs(path + "/" + file);
                DirectoryInfo thisOne = new DirectoryInfo(path);
                show_file.Text = ListTreeShow(thisOne, 0, "");
            }
            catch
            {
                Page.ClientScript.RegisterStartupScript(this.GetType(), "alert", "alert('上传文件失败，请重试');", true);
            }
        }
        else
        {
            Page.ClientScript.RegisterStartupScript(this.GetType(), "alert", "alert('请选择文件');", true);
        }
    }
}

效果

主要难点是对站点中的文件和目录递归树形显示

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