shawl.qiu c# .net upload class v1.1

类别： CSharp.Net, 类库
标签： upload, .net, uploader, c#
摘要： 上传文件
正文：
1. x.aspx
2. cs/upload.cs

1. x.aspx
  1. <%@ Page Language="C#" AutoEventWireup="True" %>
  2. <%@ Assembly src="cs/upload.cs" %>
  3. <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
  4. <html xmlns="http://www.w3.org/1999/xhtml">
  5. <head>
  6. <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
  7. <title>shawl.qiu template</title>
  8. </head>
  9. <body>
  10. <script runat="server">
  11.  void Page_Load(Object s, EventArgs e)
  12.  {
  13.   upload up=new upload();
  14.   
  15.   up.ext="7z,rar,zip,mp3,bmp,gif,jpg,jpeg,png,txt,swf";
  16.   up.debug=false;
  17.   up.item=5;                      // 声明显示多少个上传框
  18.   up.path="/uploads/";            // 上传目录;
  19.   up.goback_url=Request.Url+"";   // 上传完毕后返回的 URL
  20.   up.goback_second=5;             // 上传后返回间隔
  21.   up.interval=5;                  // 每次上传间隔, 单位秒
  22.   up.autorename=true;             // 自动重命名;
  23.   
  24.   // 声明 处理 所有 返回路径 的方法
  25.   //up.ReturnFilePath=new OneArgStringDelegate(GetPath);
  26.   
  27.   up.UploadPh=sqUpload;           // 声明显示上传控件的占位符
  28.   up.UploadBox();                 // 显示上传操作控件
  29.   
  30.   up=null;
  31.  }
  32.  
  33.  public void GetPath(String sPath)
  34.  {
  35.   System.Web.HttpContext.Current.Response.Write(sPath);
  36.  }
  37.  
  38. </script>
  39.  <form runat="server">
  40.   <asp:PlaceHolder id="sqUpload" runat="server" />
  41.  </form>
  42. </body>
  43. </html> 

2. cs/upload.cs
  1. using System;
  2. using System.Collections;
  3. using System.IO;
  4. using System.Text.RegularExpressions;
  5. using System.Web;
  6. using System.Web.UI;
  7. using System.Web.UI.WebControls;
  8. using System.Web.UI.HtmlControls;

  10. public delegate void OneArgStringDelegate(String Str);

  12. /*-----------------------------------------------------------------------------------*\
  13.  * shawl.qiu c# .net upload class v1.1
  14. \*-----------------------------------------------------------------------------------*/
  15. //---------------------------------------------------------------------begin class upload
  16. public class upload
  17. {
  18.  //-----------------------------------begin event
  19.  public upload()
  20.  {
  21.  }
  22.  
  23.  ~upload()
  24.  {
  25.  }
  26.  //-----------------------------------end event
  27.  
  28.  //-----------------------------------begin public constant
  29.  //-----------------------begin about
  30.  public const string auSubject="shawl.qiu c# .net upload class";
  31.  public const string auVersion="v1.1";
  32.  public const string au="shawl.qiu";
  33.  public const string auEmail="shawl.qiu@gmail.com";
  34.  public const string auBlog="http://blog.csdn.net/btbtd";
  35.  public const string auCreateDate="2007-1-30";
  36.  public const string auFirstUpdate="2007-2-8 v1.1";
  37.  //-----------------------end about
  38.  //-----------------------------------end public constant
  39.  
  40.  //-----------------------------------begin public variable
  41.  public Boolean debug=false;
  42.  public Boolean autorename=false;
  43.  
  44.  public String path="/uploads/";
  45.  public String ext="7z,rar,zip,mp3,bmp,gif,jpg,jpeg,png,txt,swf";
  46.  public String goback_url="?";
  47.  
  48.  public Int32 interval=10;
  49.  public Int32 goback_second=10;
  50.  public Int32 item=5;
  51.  public Int32 totalsize=1024*5;
  52.  public Int32 singlesize=1024;
  53.  
  54.  public PlaceHolder UploadPh;
  55.  
  56.  public OneArgStringDelegate ReturnFilePath;
  57.  
  58.  //-----------------------------------end public variable
  59.  
  60.  //-----------------------------------begin public method
  61.  
  62.  public void UploadBox()
  63.  {
  64.   if(UploadPh!=null)
  65.   {
  66.    UploadPh.Controls.Add(ErrorLabel);
  67.    UploadPh.Controls.Add(GobackLabel);
  68.    UploadPh.Controls.Add(UploadDetailsLabel);
  69.    
  70.    InfoLabel=new Label();
  71.    InfoLabel.Text="<ul>\n"+
  72.     "<li>允许上传的文件类型<b>: "+ext+"</b></li>\n"+
  73.     "<li>每次总上传大小最大为 <b>: "+totalsize+"kb</b>, 每文件最大为 <b>"+
  74.     singlesize+"kb</b>.</li>\n"+
  75.     "<li>每次上传时间间隔为<b>: "+interval+"</b>秒.</li>\n"+
  76.     "</ul>";
  77.      
  78.    UploadPh.Controls.Add(InfoLabel);
  79.     
  80.     LiteralBox=new Literal();
  81.     LiteralBox.Text="<ol>";
  82.     UploadPh.Controls.Add(LiteralBox);
  83.    
  84.    for(Int32 i=0; i<item; i++)
  85.    {
  86.     LiteralBox=new Literal();
  87.     LiteralBox.Text="<li>";
  88.     UploadPh.Controls.Add(LiteralBox);
  89.     
  90.     UpInputItem = new HtmlInputFile(); 
  91.     UploadPh.Controls.Add(UpInputItem);
  92.     
  93.     LiteralBox=new Literal();
  94.     LiteralBox.Text="</li>\n";
  95.     UploadPh.Controls.Add(LiteralBox);
  96.    }     
  97.     
  98.    LiteralBox=new Literal();
  99.    LiteralBox.Text="</br/>\n";
  100.    UploadPh.Controls.Add(LiteralBox);
  101.    
  102.    SubmitButton=new Button();
  103.    SubmitButton.Text="Upload now";
  104.    SubmitButton.Click+=new EventHandler(go);
  105.    SubmitButton.Attributes["onclick"]="javascript:return confirm('现在上传文件吗?')";
  106.    UploadPh.Controls.Add(SubmitButton);
  107.     
  108.    LiteralBox=new Literal();
  109.    LiteralBox.Text=" <input type=\"reset\" value=\"reset\""+
  110.    " onclick=\"return confirm('现在重置吗');\" />";
  111.    UploadPh.Controls.Add(LiteralBox);
  112.     
  113.    LiteralBox=new Literal();
  114.    LiteralBox.Text="</ol>\n";
  115.    UploadPh.Controls.Add(LiteralBox);
  116.   }
  117.  } // end public void UploadBox
  118.  
  119.  public void go(Object s, EventArgs e)
  120.  {
  121.   
  122.   if(HttpContext.Current.Session["sqUpFl"]==null)
  123.   {
  124.    HttpContext.Current.Session["sqUpFl"]=DateTime.Now;
  125.   }
  126.   
  127.   DateTime dtSession=DateTime.Parse(HttpContext.Current.Session["sqUpFl"]+"");

  129.   if(dtSession>DateTime.Now)
  130.   {
  131.    TimeSpan hasInterval=dtSession-DateTime.Now;
  132.    
  133.    finished("每次上传时间间隔为 "+interval+" 秒, 请稍候...",
  134.     hasInterval.Seconds, goback_url, GobackLabel);
  135.    goto End;
  136.   }
  137.   
  138.   //---------------------检测上传目录是否存在
  139.   String path_phs=HttpContext.Current.Server.MapPath(path);
  140.   if(!Directory.Exists(path_phs))
  141.   {
  142.    if(InfoLabel!=null)
  143.    {
  144.     InfoLabel.Text+="<h2>指定的上传目录不存在, 操作被取消.</h2>";
  145.    }
  146.    goto End;
  147.   }
  148.   
  149.   Int32 upTotal=HttpContext.Current.Request.ContentLength/1024;
  150.   Int32 total=HttpContext.Current.Request.Files.AllKeys.Length;
  151.   
  152.   ArrayList aUpsize=new ArrayList();
  153.   ArrayList aNoExt=new ArrayList();
  154.   ArrayList aNotAllowExt=new ArrayList();
  155.   ArrayList aFinished=new ArrayList();
  156.   
  157.   if(upTotal>totalsize) goto Upsize;
  158.    
  159.   for(Int32 i=0; i<total; i++)
  160.   {
  161.    System.Web.HttpPostedFile files=HttpContext.Current.Request.Files[i];
  162.    if(files.ContentLength>0)
  163.    { 
  164.     String flnm=Path.GetFileName(files.FileName);
  165.     String justnm=Path.GetFileNameWithoutExtension(files.FileName);
  166.     String justext=Path.GetExtension(files.FileName);
  167.     
  168.     String flph=path+justnm+justext;
  169.     String flph_phs=HttpContext.Current.Server.MapPath(flph);
  170.     
  171.     //-----------------------------------单文件超出限制大小
  172.     Int32 flSize=files.ContentLength/1024;
  173.     if(flSize>singlesize)
  174.     {
  175.      aUpsize.Add("文件: "+flnm+", 大小为: "+flSize+" kb.");
  176.      continue;
  177.     }    
  178.     
  179.     if(!Path.HasExtension(flnm))
  180.     {
  181.      aNoExt.Add("文件: "+flnm+", 没有扩展名.");
  182.      continue;
  183.     }
  184.     
  185.     String extTemp=Regex.Replace(justext,"^.","");
  186.     if(!Regex.IsMatch(ext, "\\b"+extTemp+"\\b", RegexOptions.IgnoreCase))
  187.     {
  188.      aNotAllowExt.Add("不允许上传的文件扩展: "+flnm);
  189.      continue;
  190.     }
  191.     
  192.     if(File.Exists(flph_phs)) //------------------已存在相同同名文件
  193.     {
  194.      if(autorename)
  195.      { 
  196.       Int32 iRename=1;
  197.       while(true)
  198.       {
  199.        String sNameTemp=HttpContext.Current.
  200.         Server.MapPath(path+justnm+"_"+(iRename++)+justext);
  201.        if(!File.Exists(sNameTemp))
  202.        {
  203.         flph_phs=sNameTemp;
  204.         goto SaveFile;
  205.        } // end if 3
  206.       } // end while
  207.      } // end if 2
  208.     } // end if 1
  209.     SaveFile:;
  210.      files.SaveAs(flph_phs);
  211.   
  212.      String flnmTemp=Path.GetFileName(flph_phs);
  213.      aFinished.Add("文件: "+flnmTemp+" 已上传.");
  214.      
  215.      allFilePath+=path+flnmTemp+",";
  216.      
  217.      HttpContext.Current.Session["sqUpFl"]=
  218.       DateTime.Now.AddSeconds(interval);
  219.    } // end if
  220.   } // end for
  221.   goto Report;
  222.   
  223.   Upsize:
  224.    ErrorLabel.Text+="<h2 style='text-align:center;'>上传大小超出限制, 已被终止.</h2>";
  225.    finished(goback_second+" 秒后返回, 还有 ", 
  226.     goback_second, goback_url, GobackLabel);
  227.   goto End;
  228.    
  229.   Report:
  230.    listAl("已上传文件 ", aFinished, UploadDetailsLabel);
  231.    listAl("单文件超出限制大小的有 ", aUpsize, UploadDetailsLabel);
  232.    listAl("没有文件扩展名的有 ", aNoExt, UploadDetailsLabel);
  233.    listAl("不允许上传的文件扩展有 ", aNotAllowExt, UploadDetailsLabel);
  234.   goto Finished;
  235.   
  236.   Finished:
  237.    finished("操作已完毕, "+goback_second+" 秒后返回, 还有 ", 
  238.     goback_second, goback_url, GobackLabel);
  239.   End: 
  240.    allFilePath=Regex.Replace(allFilePath,",$","");
  241.    
  242.    if(ReturnFilePath!=null)
  243.    { 
  244.     ReturnFilePath(allFilePath);
  245.    }
  246.  } // end go
  247.  //-----------------------------------end public method
  248.  
  249.  //-----------------------------------begin private variable
  250.  private String allFilePath="";
  251.  
  252.  private Label InfoLabel;
  253.  private Label GobackLabel=new Label();
  254.  private Label UploadDetailsLabel=new Label();
  255.  private Label ErrorLabel=new Label();
  256.  
  257.  private Literal LiteralBox;
  258.  
  259.  private Button SubmitButton;
  260.  
  261.  private HtmlInputFile UpInputItem;
  262.  //-----------------------------------end private variable
  263.  
  264.  //-----------------------------------begin private method
  265.  private void listAl(String sDetail, ArrayList oAl, Label UploadDetailsLabel)
  266.  {
  267.   if(oAl.Count>0)
  268.   {
  269.    UploadDetailsLabel.Text+="<ol><label>"+sDetail+"<b>"+
  270.     oAl.Count+"个</b>.</label>";
  271.    foreach(Object item in oAl)
  272.    {
  273.     UploadDetailsLabel.Text+="<li>"+item+"</li>";
  274.    }
  275.    UploadDetailsLabel.Text+="</ol><hr/>";
  276.   }
  277.  }
  278.  
  279.  private void finished(String sPrompt, Int32 iSecond, String sUrl, Label GobackLabel)
  280.  {
  281.   GobackLabel.Text+="<script type=\"text/javascript\">\n";
  282.   GobackLabel.Text+="//<![CDATA[\n";
  283.   GobackLabel.Text+=" var temp=onload;\n";
  284.   GobackLabel.Text+=" onload=function(){\n";
  285.   GobackLabel.Text+="  try{temp()}catch(e){}\n";
  286.   GobackLabel.Text+="  fTimer("+iSecond+",'timer', 10);\n";
  287.   GobackLabel.Text+=" }\n";
  288.   GobackLabel.Text+="  function fTimer(iTimestamp, sId, iMs){\n";
  289.   GobackLabel.Text+="  if(!(iTimestamp.constructor==Date)){\n";
  290.   GobackLabel.Text+="   var sqTimeStamp=new Date();\n";
  291.   GobackLabel.Text+="   sqTimeStamp.setSeconds(sqTimeStamp.getSeconds()+iTimestamp);\n";
  292.   GobackLabel.Text+="   iTimestamp=sqTimeStamp;\n";
  293.   GobackLabel.Text+="  }\n";
  294.   GobackLabel.Text+="    var tl=arguments.callee;\n";
  295.   GobackLabel.Text+="    if(typeof sId=='string'){\n";
  296.   GobackLabel.Text+="   var oEle=document.getElementById(sId);\n";
  297.   GobackLabel.Text+="  } else {\n";
  298.   GobackLabel.Text+="   var oEle=sId;\n";
  299.   GobackLabel.Text+="  }\n";
  300.   GobackLabel.Text+="  var dt=new Date();\n";
  301.   GobackLabel.Text+="  var iCk=((iTimestamp.getTime()-dt.getTime())/1000).toFixed(3);\n";
  302.   GobackLabel.Text+="  if(iCk<=0){\n";
  303.   GobackLabel.Text+="   oEle.innerHTML='00.000';\n";
  304.   GobackLabel.Text+="   return false;\n";
  305.   GobackLabel.Text+="  } else {\n";
  306.   GobackLabel.Text+="   oEle.innerHTML=iCk;\n";
  307.   GobackLabel.Text+="   var iTimer=setTimeout(function(){tl(iTimestamp, oEle, iMs)},iMs); \n";
  308.   GobackLabel.Text+="  }\n";
  309.   GobackLabel.Text+=" } // end function fTimer // shawl.qiu script\n";
  310.   GobackLabel.Text+="//]]>\n";
  311.   GobackLabel.Text+="</script>\n";

  313.   GobackLabel.Text+="<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\" />";
  314.   GobackLabel.Text+="<meta http-equiv=\"refresh\" content=\""+iSecond+";URL="+sUrl+"\">";
  315.   GobackLabel.Text+="<div style=\"display:table;width:100%;background-color:yellow!important;"+
  316.     "color:black!important;text-align:center!important;\">"+
  317.     sPrompt+", <span id='timer'>"+iSecond+"</span>秒 后返回.</div>";
  318.  }
  319.  //-----------------------------------end private method
  320. }
  321. //---------------------------------------------------------------------end class upload
  322.  
文章相关信息:
主题: shawl.qiu c# .net upload class v1.1
发表者: shawl.qiu
电子邮件: shawl.qiu@gmail.com
QQ: 908202921
MSN: btbtd@msn.com
Homepage: http://www.btbtd.org/
Blog: http://blog.csdn.net/btbtd/
发表日期: 2007-2-8 20:11:58
更新日期: 2007-2-8 20:11:58
来源引用: shawl.qiu CSharp DotNet 个人资料管理系统
引用本页: http://gi.2288.org/mod/code/display/Default.aspx?aid=261
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