asp實現上傳下載
A. 請問用ASP如何能實現文件的上傳和下載
<table width=700 align=center><tr><td>
<body topmargin="10" bgcolor="#ffffff">
<%
Dim sStyleID, sUploadDir, sCurrDir, sDir
sPosition = sPosition & "上傳文件管理"
Call Header()
Call Content()
Call Footer()
Sub Content()
If IsObjInstalled("Scripting.FileSystemObject") = False Then
Response.Write "此功能要求伺服器支持文件系統對象(FSO),而你當前的伺服器不支持!"
Exit Sub
End If
' 初始化傳入參數
Call InitParam()
Select Case sAction
Case "DELALL" ' 刪除所有文件
Call DoDelAll()
Case "DEL" ' 刪除指定文件
Call DoDel()
Case "DELFOLDER" ' 刪除文件夾
Call DoDelFolder()
End Select
' 顯示文件列表
Call ShowList()
End Sub
' UploadFile目錄下的所有文件列表
Sub ShowList()
If sCurrDir = "" Then Exit Sub
Response.Write "<table border=1 style='border-collapse: collapse' bordercolor='#C0C0C0' cellpadding=3 cellspacing=0>" & _
"<form action='?id=" & sStyleID & "&dir=" & sDir & "&action=del' method=post name=myform>" & _
"<tr align=center>" & _
"<td width=50 height=25 background='../images/bj5.jpg' style='color:ffffff'>類型</th>" & _
"<td width=140 background='../images/bj5.jpg' style='color:ffffff'>文件地址</th>" & _
"<td width=100 background='../images/bj5.jpg' style='color:ffffff'>大小</th>" & _
"<td width=130 background='../images/bj5.jpg' style='color:ffffff'>最後訪問</th>" & _
"<td width=130 background='../images/bj5.jpg' style='color:ffffff'>上傳日期</th>" & _
"<td width=30 background='../images/bj5.jpg' style='color:ffffff'>刪除</th>" & _
"</tr>"
Dim sCurrPage, nCurrPage, nFileNum, nPageNum, nPageSize
sCurrPage = Trim(Request("page"))
nPageSize = 20
If sCurrpage = "" Or Not IsNumeric(sCurrPage) Then
nCurrPage = 1
Else
nCurrPage = CLng(sCurrPage)
End If
Dim oFSO, oUploadFolder, oUploadFiles, oUploadFile, sFileName
Set oFSO = Server.CreateObject("Scripting.FileSystemObject")
On Error Resume Next
Set oUploadFolder = oFSO.GetFolder(Server.MapPath(sCurrDir))
If Err.Number>0 Then
Response.Write "</table>無效的目錄!"
Exit Sub
End If
If sDir <> "" Then
Response.Write "<tr align=center>" & _
"<td><img border=0 src='sysimage/file/folderback.gif'></td>" & _
"<td align=left colspan=5><a href=""?id=" & sStyleID & "&dir="
If InstrRev(sDir, "/") > 1 Then
Response.Write Left(sDir, InstrRev(sDir, "/") - 1)
End If
Response.Write """>返回上一級目錄</a></td></tr>"
End If
Dim oSubFolder
For Each oSubFolder In oUploadFolder.SubFolders
Response.Write "<tr align=center>" & _
"<td><img border=0 src='sysimage/file/folder.gif'></td>" & _
"<td align=left colspan=4><a href=""?id=" & sStyleID & "&dir="
If sDir <> "" Then
Response.Write sDir & "/"
End If
Response.Write oSubFolder.Name & """>" & oSubFolder.Name & "</a></td>" & _
"<td><a href='?id=" & sStyleID & "&dir=" & sDir & "&action=delfolder&foldername=" & oSubFolder.Name & "'>刪除</a></td></tr>"
Next
Set oUploadFiles = oUploadFolder.Files
nFileNum = oUploadFiles.Count
nPageNum = Int(nFileNum / nPageSize)
If nFileNum Mod nPageSize > 0 Then
nPageNum = nPageNum+1
End If
If nCurrPage > nPageNum Then
nCurrPage = 1
end If
Dim i
i = 0
For Each oUploadFile In oUploadFiles
i = i + 1
If i > (nCurrPage - 1) * nPageSize And i <= nCurrPage * nPageSize Then
sFileName = oUploadFile.Name
Response.Write "<tr align=center>" & _
"<td>" & FileName2Pic(sFileName) & "</td>" & _
"<td align=center><a href=""" & sCurrDir & sFileName & """ target=_blank>"
if right(sFileName,3)="jpg" or right(sFileName,3)="JPG" or right(sFileName,3)="gif" or right(sFileName,3)="GIF" or right(sFileName,3)="BMP" or right(sFileName,3)="bmp" or right(sFileName,3)="png" or right(sFileName,3)="PNG" then
Response.Write "<img border=0 width=80 height=60 src="&sCurrDir& sFileName&" ><BR>"
end if
Response.Write sFileName & "</a></td>" & _
"<td>" & oUploadFile.size & " B </td>" & _
"<td>" & oUploadFile.datelastaccessed & "</td>" & _
"<td>" & oUploadFile.datecreated & "</td>" & _
"<td><input type=checkbox name=delfilename value=""" & sFileName & """></td></tr>"
Elseif i > nCurrPage * nPageSize Then
Exit For
End If
Next
Set oUploadFolder = Nothing
Set oUploadFiles = Nothing
If nFileNum <= 0 Then
Response.Write "<tr><td colspan=6>指定目錄下現在還沒有文件!</td></tr>"
End If
Response.Write "</table>"
If nFileNum > 0 Then
' 分頁
Response.Write "<table border=0 cellpadding=3 cellspacing=0 width='100%'><tr><td align=center>"
If nCurrPage > 1 Then
Response.Write "<a href='?id=" & sStyleID & "&dir=" & sDir & "&page=1'>首頁</a><a href='?id=" & sStyleID & "&dir=" & sDir & "&page="& nCurrPage - 1 & "'>上一頁</a>"
Else
Response.Write "首頁上一頁"
End If
If nCurrPage < i / nPageSize Then
Response.Write "<a href='?id=" & sStyleID & "&dir=" & sDir & "&page=" & nCurrPage + 1 & "'>下一頁</a><a href='?id=" & sStyleID & "&dir=" & sDir & "&page=" & nPageNum & "'>尾頁</a>"
Else
Response.Write "下一頁尾頁"
End If
Response.Write "共<b>" & nFileNum & "</b>個頁次:<b><span class=highlight2>" & nCurrPage & "</span>/" & nPageNum & "</b><b>" & nPageSize & "</b>個文件/頁"
Response.Write "</td></tr></table>"
End If
Response.Write "<p align=center><input type=submit name=b value=' 刪除選定的文件 '> <input type=button name=b1 value=' 清空所有文件 ' onclick=""javascript:if (confirm('你確定要清空所有文件嗎?')) {location.href='admin_uploadfile.asp?id=" & sStyleID & "&dir=" & sDir & "&action=delall';}""></p></form>"
End Sub
' 刪除指定的文件
Sub DoDel()
On Error Resume Next
Dim sFileName, oFSO, sMapFileName
Set oFSO = Server.CreateObject("Scripting.FileSystemObject")
For Each sFileName In Request.Form("delfilename")
sMapFileName = Server.MapPath(sCurrDir & sFileName)
If oFSO.FileExists(sMapFileName) Then
oFSO.DeleteFile(sMapFileName)
End If
Next
Set oFSO = Nothing
End Sub
' 刪除所有的文件
Sub DoDelAll()
On Error Resume Next
Dim sFileName, oFSO, sMapFileName, oFolder, oFiles, oFile
Set oFSO = Server.CreateObject("Scripting.FileSystemObject")
Set oFolder = oFSO.GetFolder(Server.MapPath(sCurrDir))
Set oFiles = oFolder.Files
For Each oFile In oFiles
sFileName = oFile.Name
sMapFileName = Server.MapPath(sCurrDir & sFileName)
If oFSO.FileExists(sMapFileName) Then
oFSO.DeleteFile(sMapFileName)
End If
Next
Set oFile = Nothing
Set oFolder = Nothing
Set oFSO = Nothing
End Sub
' 刪除文件夾
Sub DoDelFolder()
On Error Resume Next
Dim sFolderName, oFSO, sMapFolderName
Set oFSO = Server.CreateObject("Scripting.FileSystemObject")
sFolderName = Trim(Request("foldername"))
sMapFolderName = Server.Mappath(sCurrDir & sFolderName)
If oFSO.FolderExists(sMapFolderName) = True Then
oFSO.DeleteFolder(sMapFolderName)
End If
Set oFSO = Nothing
End Sub
' 檢測伺服器是否支持某一對象
Function IsObjInstalled(strClassString)
On Error Resume Next
IsObjInstalled = False
Err = 0
Dim xTestObj
Set xTestObj = Server.CreateObject(strClassString)
If 0 = Err Then IsObjInstalled = True
Set xTestObj = Nothing
Err = 0
End Function
' 按文件名取圖
Function FileName2Pic(sFileName)
Dim sExt, sPicName
sExt = UCase(Mid(sFileName, InstrRev(sFileName, ".")+1))
Select Case sExt
Case "TXT"
sPicName = "txt.gif"
Case "CHM", "HLP"
sPicName = "hlp.gif"
Case "DOC"
sPicName = "doc.gif"
Case "PDF"
sPicName = "pdf.gif"
Case "MDB"
sPicName = "mdb.gif"
Case "GIF"
sPicName = "gif.gif"
Case "JPG"
sPicName = "jpg.gif"
Case "BMP"
sPicName = "bmp.gif"
Case "PNG"
sPicName = "pic.gif"
Case "ASP", "JSP", "JS", "php", "PHP3", "ASPX"
sPicName = "code.gif"
Case "HTM", "HTML", "SHTML"
sPicName = "htm.gif"
Case "ZIP"
sPicName = "zip.gif"
Case "RAR"
sPicName = "rar.gif"
Case "EXE"
sPicName = "exe.gif"
Case "AVI"
sPicName = "avi.gif"
Case "MPG", "MPEG", "ASF"
sPicName = "mp.gif"
Case "RA", "RM"
sPicName = "rm.gif"
Case "MP3"
sPicName = "mp3.gif"
Case "MID", "MIDI"
sPicName = "mid.gif"
Case "WAV"
sPicName = "audio.gif"
Case "XLS"
sPicName = "xls.gif"
Case "PPT", "PPS"
sPicName = "ppt.gif"
Case "SWF"
sPicName = "swf.gif"
Case Else
sPicName = "unknow.gif"
End Select
FileName2Pic = "<img border=0 src='sysimage/file/" & sPicName & "'>"
End Function
' ===============================================
' 初始化下拉框
' v_InitValue : 初始值
' s_Sql : 從資料庫中取值時,select name,value from table
' s_AllName : 空值的名稱,如:"全部","所有","默認"
' ===============================================
Function InitSelect(v_InitValue, s_Sql, s_AllName)
Dim i
InitSelect = ""
If s_AllName <> "" Then
InitSelect = InitSelect & "<option value=''>" & s_AllName & "</option>"
End If
oRs.Open s_Sql, oConn, 0, 1
Do While Not oRs.Eof
InitSelect = InitSelect & "<option value=""" & inHTML(oRs(1)) & """"
If CStr(oRs(1)) = CStr(v_InitValue) Then
InitSelect = InitSelect & " selected"
End If
InitSelect = InitSelect & ">" & outHTML(oRs(0)) & "</option>"
oRs.MoveNext
Loop
oRs.Close
End Function
' ===============================================
' 初始化傳入參數
' ===============================================
Function InitParam()
sStyleID = Trim(Request("id"))
sUploadDir = ""
If IsNumeric(sStyleID) = True Then
sSql = "select S_UploadDir from eWebEditor_Style where S_ID=" & sStyleID
oRs.Open sSql, oConn, 0, 1
If Not oRs.Eof Then
sUploadDir = oRs(0)
End If
oRs.Close
End If
If sUploadDir = "" Then
sStyleID = ""
Else
sUploadDir = Replace(sUploadDir, "\", "/")
If Right(sUploadDir, 1) <> "/" Then
sUploadDir = sUploadDir & "/"
End If
End If
sCurrDir = sUploadDir
' 樣式下的目錄
sDir = Trim(Request("dir"))
If sDir <> "" Then
If CheckValidDir(Server.Mappath(sUploadDir & sDir)) = True Then
sCurrDir = sUploadDir & sDir & "/"
Else
sDir = ""
End If
End If
End Function
' ===============================================
' 檢測目錄的有效性
' ===============================================
Function CheckValidDir(s_Dir)
Dim oFSO
Set oFSO = Server.CreateObject("Scripting.FileSystemObject")
CheckValidDir = oFSO.FolderExists(s_Dir)
Set oFSO = Nothing
End Function
%>
</td></tr></table>
B. asp做上傳下載
asp 又組建上傳 很方便
首先把上傳的文件肯定要放在伺服器上
並將上傳文件的地址記錄在資料庫中,你要想讓別人下載,肯定要有個下載列表頁,此頁查詢資料庫,從資料庫中查到下載地址,然後輸出出來,別人一點就能下載了 ....不知道你說的是不是這個意思 ...這么做肯定沒問題 因為我做過的簡單項目都是這么做的
C. asp.net C# b/s 系統 怎麼實現文件的上傳下載。
點擊上傳按鈕:
protected void btnupload_Click(object sender, EventArgs e)
{
string file = uploadfile.SaveFile(uploadpic, upleixing,"uploadpic");
if (UpType.ToLower() == "one")
{
Response.Write("<script>parent.document.form1." + htmControl + ".value='" + file + "';</script>");
}
else
{
Response.Write("<script>if(parent.document.form1." + htmControl + ".value==''){parent.document.form1." + htmControl + ".value='" + file + "';}else{parent.document.form1." + htmControl + ".value+='|" + file + "';}</script>");
}
}
類
uploadfile.cs
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.IO;
/// <summary>
/// uploadfile 的摘要說明
/// </summary>
public class uploadfile
{
public uploadfile()
{
//
// TODO: 在此處添加構造函數邏輯
//
}
/// <summary>
/// 判斷文件路徑是否存在;
/// 返回創建點日期文件夾路徑
/// </summary>
/// <returns></returns>
public static string createFolder()
{
string rtpaht = "";
DateTime datenow = DateTime.Now;
string year = datenow.Year.ToString();
string month = datenow.Month.ToString();
string date = datenow.Day.ToString();
if (Directory.Exists(HttpContext.Current.Server.MapPath("~/uploadpic/" + year + "/" + month + "/" + date + "")) == false)
{
Directory.CreateDirectory(HttpContext.Current.Server.MapPath("~/uploadpic/" + year + "/" + month + "/" + date + ""));
}
rtpaht = "" + year + "/" + month + "/" + date + "";
return rtpaht;
}
/// <summary>
/// 保存文件,返回帶日期文件夾的路徑。
/// </summary>
/// <param name="file"></param>
/// <param name="type"></param>
/// <returns></returns>
public static string SaveFile(FileUpload file,string type)
{
return SaveFile(file, type, "uploadpic");
}
/// <summary>
/// 保存文件
/// </summary>
/// <param name="file"></param>
/// <param name="type"></param>
/// <param name="SaveFoder"></param>
/// <returns></returns>
public static string SaveFile(FileUpload file, string type,string SaveFoder)
{
if (type.IndexOf("asp") >= 0 || type.IndexOf("php") >= 0 || type.IndexOf("aspx") >= 0 || type.IndexOf("jsp") >= 0 || type.IndexOf("exe") >= 0)
{
HttpContext.Current.Response.End();
}
string filename = file.PostedFile.FileName;
if (file.HasFile)
{
string savepath1 = createFolder();
string savepath = "";
if (SaveFoder == "")
{
savepath = HttpContext.Current.Server.MapPath("~/"+SaveFoder+"/" + savepath1);
if (Directory.Exists(savepath) == false)
{
Directory.CreateDirectory(savepath);
}
}
else
{
savepath = HttpContext.Current.Server.MapPath("~/" + SaveFoder + "/" + savepath1);
if (Directory.Exists(savepath) == false)
{
Directory.CreateDirectory(savepath);
}
}
string filename2 = DateTime.Now.ToString().Replace("-", "").Replace(":", "").Replace(" ", "") + "." + GetFileExtends(filename, type);
file.SaveAs(savepath + "/" + filename2);
return savepath1 + "/" + filename2;
}
else
{
// HttpContext.Current.Response.Write(CommdClass.ResponseScript("請選擇上傳的文件!", "-1"));
return "nofile.jpg";
}
}
/// <summary>
///
/// </summary>
/// <param name="filename"></param>
/// <param name="filetype">文件類型(gif,jpg,bmp)</param>
/// <returns></returns>
public static string GetFileExtends(string filename,string filetype)
{
string ext = null;
if (filename.IndexOf('.') > 0)
{
string[] fs = filename.Split('.');
ext = fs[fs.Length - 1];
}
if (filetype.IndexOf(ext.ToLower()) < 0)
{
HttpContext.Current.Response.Write(ext + "<br>" + filetype);
HttpContext.Current.Response.Write(CommdClass.ResponseScript("文件格式錯誤,只允許上傳" + filetype + "格式文件。", "0"));
return"";
}
return ext;
}
}
D. asp中怎麼實現文件的上傳
單用file控制項是不能實現上傳文件的。網上有很多無組件上傳的資料,例如無懼類,可以網路一下。
下載的時候,把你存放文件的路徑傳遞過來,提供個連接一般就可以了,但如果是doc之類的文件,IE可能會自動調用相應的軟體直接打開而不是下載。
E. asp建站如何實現上傳和下載
最好是組件類上傳下載,無組件的不太支持大文件和壓縮類文件。
給你一個最簡單的ASPUPLOAD(網上有下載的)組件上傳代碼。國內空間和伺服器一般都支持ASPUPLOAD
只要你的網頁form ACTION 到這個upload.asp 就上傳了。先建一個upload目錄
這個upload.asp 代碼如下:
<%
Set Upload = Server.CreateObject("Persits.Upload") '重要的:驅動組件
HH_savepath=server.mappath("upload") '定義相對路徑
Upload.Save(HH_savepath) '上傳
%>
三句搞定,簡單吧?哈哈
F. 求ASP.NET WEB項目文件夾上傳下載解決方案
ASP.NET上傳文件用FileUpLoad就可以,但是對文件夾的操作卻不能用FileUpLoad來實現。
下面這個示例便是使用ASP.NET來實現上傳文件夾並對文件夾進行壓縮以及解壓。
ASP.NET頁面設計:TextBox和Button按鈕。
TextBox中需要自己受到輸入文件夾的路徑(包含文件夾),通過Button實現選擇文件夾的問題還沒有解決,暫時只能手動輸入。
兩種方法:生成rar和zip。
1.生成rar
using Microsoft.Win32;
using System.Diagnostics;
protected void Button1Click(object sender, EventArgs e)
{
RAR(@"E:95413594531GIS", "tmptest", @"E:95413594531");
}
///
///壓縮文件
///
///需要壓縮的文件夾或者單個文件
///生成壓縮文件的文件名
///生成壓縮文件保存路徑
///
protected bool RAR(string DFilePath, string DRARName,string DRARPath)
{
String therar;
RegistryKey theReg;
Object theObj;
String theInfo;
ProcessStartInfo theStartInfo;
Process theProcess;
try
{
theReg = Registry.ClassesRoot.OpenSubKey(@"ApplicationsWinRAR.exeShellOpenCommand"); //註:未在注冊表的根路徑找到此路徑
theObj = theReg.GetValue("");
therar = theObj.ToString();
theReg.Close();
therar = therar.Substring(1, therar.Length - 7);
theInfo = " a" + " " + DRARName + "" + DFilePath +" -ep1"; //命令 + 壓縮後文件名 + 被壓縮的文件或者路徑
theStartInfo = new ProcessStartInfo();
theStartInfo.FileName = therar;
theStartInfo.Arguments = theInfo;
theStartInfo.WindowStyle = ProcessWindowStyle.Hidden;
theStartInfo.WorkingDirectory = DRARPath ; //RaR文件的存放目錄。
theProcess = new Process();
theProcess.StartInfo = theStartInfo;
theProcess.Start();
theProcess.WaitForExit();
theProcess.Close();
return true;
}
catch (Exception ex)
{
return false;
}
}
///
///解壓縮到指定文件夾
///
///壓縮文件存在的目錄
///壓縮文件名稱
///解壓到文件夾
///
protected bool UnRAR(string RARFilePath,string RARFileName,string UnRARFilePath)
{
//解壓縮
String therar;
RegistryKey theReg;
Object theObj;
String theInfo;
ProcessStartInfo theStartInfo;
Process theProcess;
try
{
theReg = Registry.ClassesRoot.OpenSubKey(@"ApplicationsWinRar.exeShellOpenCommand");
theObj = theReg.GetValue("");
therar = theObj.ToString();
theReg.Close();
therar = therar.Substring(1, therar.Length - 7);
theInfo = @" X " + " " + RARFilePath + RARFileName + " " + UnRARFilePath;
theStartInfo = new ProcessStartInfo();
theStartInfo.FileName = therar;
theStartInfo.Arguments = theInfo;
theStartInfo.WindowStyle = ProcessWindowStyle.Hidden;
theProcess = new Process();
theProcess.StartInfo = theStartInfo;
theProcess.Start();
return true;
}
catch (Exception ex)
{
return false;
}
}
註:這種方法在在電腦注冊表中未找到應有的路徑,未實現,僅供參考。
2.生成zip
通過調用類庫ICSharpCode.SharpZipLib.dll
該類庫可以從網上下載。也可以從本鏈接下載:SharpZipLib_0860_Bin.zip
增加兩個類:Zip.cs和UnZip.cs
(1)Zip.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.IO;
using System.Collections;
using ICSharpCode.SharpZipLib.Checksums;
using ICSharpCode.SharpZipLib.Zip;
namespace UpLoad
{
/// <summary>
///功能:壓縮文件
/// creator chaodongwang 2009-11-11
/// </summary>
public class Zip
{
/// <summary>
///壓縮單個文件
/// </summary>
/// <param name="FileToZip">被壓縮的文件名稱(包含文件路徑)</param>
/// <param name="ZipedFile">壓縮後的文件名稱(包含文件路徑)</param>
/// <param name="CompressionLevel">壓縮率0(無壓縮)-9(壓縮率最高)</param>
/// <param name="BlockSize">緩存大小</param>
public void ZipFile(string FileToZip, string ZipedFile, int CompressionLevel)
{
//如果文件沒有找到,則報錯
if (!System.IO.File.Exists(FileToZip))
{
throw new System.IO.FileNotFoundException("文件:" + FileToZip + "沒有找到!");
}
if (ZipedFile == string.Empty)
{
ZipedFile = Path.GetFileNameWithoutExtension(FileToZip) + ".zip";
}
if (Path.GetExtension(ZipedFile) != ".zip")
{
ZipedFile = ZipedFile + ".zip";
}
////如果指定位置目錄不存在,創建該目錄
//string zipedDir = ZipedFile.Substring(0,ZipedFile.LastIndexOf("\"));
//if (!Directory.Exists(zipedDir))
//Directory.CreateDirectory(zipedDir);
//被壓縮文件名稱
string filename = FileToZip.Substring(FileToZip.LastIndexOf('\') + 1);
System.IO.FileStream StreamToZip = new System.IO.FileStream(FileToZip, System.IO.FileMode.Open, System.IO.FileAccess.Read);
System.IO.FileStream ZipFile = System.IO.File.Create(ZipedFile);
ZipOutputStream ZipStream = new ZipOutputStream(ZipFile);
ZipEntry ZipEntry = new ZipEntry(filename);
ZipStream.PutNextEntry(ZipEntry);
ZipStream.SetLevel(CompressionLevel);
byte[] buffer = new byte[2048];
System.Int32 size = StreamToZip.Read(buffer, 0, buffer.Length);
ZipStream.Write(buffer, 0, size);
try
{
while (size < StreamToZip.Length)
{
int sizeRead = StreamToZip.Read(buffer, 0, buffer.Length);
ZipStream.Write(buffer, 0, sizeRead);
size += sizeRead;
}
}
catch (System.Exception ex)
{
throw ex;
}
finally
{
ZipStream.Finish();
ZipStream.Close();
StreamToZip.Close();
}
}
/// <summary>
///壓縮文件夾的方法
/// </summary>
public void ZipDir(string DirToZip, string ZipedFile, int CompressionLevel)
{
//壓縮文件為空時默認與壓縮文件夾同一級目錄
if (ZipedFile == string.Empty)
{
ZipedFile = DirToZip.Substring(DirToZip.LastIndexOf("\") + 1);
ZipedFile = DirToZip.Substring(0, DirToZip.LastIndexOf("\")) +"\"+ ZipedFile+".zip";
}
if (Path.GetExtension(ZipedFile) != ".zip")
{
ZipedFile = ZipedFile + ".zip";
}
using (ZipOutputStream zipoutputstream = new ZipOutputStream(File.Create(ZipedFile)))
{
zipoutputstream.SetLevel(CompressionLevel);
Crc32 crc = new Crc32();
Hashtable fileList = getAllFies(DirToZip);
foreach (DictionaryEntry item in fileList)
{
FileStream fs = File.OpenRead(item.Key.ToString());
byte[] buffer = new byte[fs.Length];
fs.Read(buffer, 0, buffer.Length);
ZipEntry entry = new ZipEntry(item.Key.ToString().Substring(DirToZip.Length + 1));
entry.DateTime = (DateTime)item.Value;
entry.Size = fs.Length;
fs.Close();
crc.Reset();
crc.Update(buffer);
entry.Crc = crc.Value;
zipoutputstream.PutNextEntry(entry);
zipoutputstream.Write(buffer, 0, buffer.Length);
}
}
}
/// <summary>
///獲取所有文件
/// </summary>
/// <returns></returns>
private Hashtable getAllFies(string dir)
{
Hashtable FilesList = new Hashtable();
DirectoryInfo fileDire = new DirectoryInfo(dir);
if (!fileDire.Exists)
{
throw new System.IO.FileNotFoundException("目錄:" + fileDire.FullName + "沒有找到!");
}
this.getAllDirFiles(fileDire, FilesList);
this.getAllDirsFiles(fileDire.GetDirectories(), FilesList);
return FilesList;
}
/// <summary>
///獲取一個文件夾下的所有文件夾里的文件
/// </summary>
/// <param name="dirs"></param>
/// <param name="filesList"></param>
private void getAllDirsFiles(DirectoryInfo[] dirs, Hashtable filesList)
{
foreach (DirectoryInfo dir in dirs)
{
foreach (FileInfo file in dir.GetFiles("*.*"))
{
filesList.Add(file.FullName, file.LastWriteTime);
}
this.getAllDirsFiles(dir.GetDirectories(), filesList);
}
}
/// <summary>
///獲取一個文件夾下的文件
/// </summary>
/// <param name="strDirName">目錄名稱</param>
/// <param name="filesList">文件列表HastTable</param>
private void getAllDirFiles(DirectoryInfo dir, Hashtable filesList)
{
foreach (FileInfo file in dir.GetFiles("*.*"))
{
filesList.Add(file.FullName, file.LastWriteTime);
}
}
}
}
(2)UnZip.cs
using System.Collections.Generic;
using System.Linq;
using System.Web;
/// <summary>
///解壓文件
/// </summary>
using System;
using System.Text;
using System.Collections;
using System.IO;
using System.Diagnostics;
using System.Runtime.Serialization.Formatters.Binary;
using System.Data;
using ICSharpCode.SharpZipLib.Zip;
using ICSharpCode.SharpZipLib.Zip.Compression;
using ICSharpCode.SharpZipLib.Zip.Compression.Streams;
namespace UpLoad
{
/// <summary>
///功能:解壓文件
/// creator chaodongwang 2009-11-11
/// </summary>
public class UnZipClass
{
/// <summary>
///功能:解壓zip格式的文件。
/// </summary>
/// <param name="zipFilePath">壓縮文件路徑</param>
/// <param name="unZipDir">解壓文件存放路徑,為空時默認與壓縮文件同一級目錄下,跟壓縮文件同名的文件夾</param>
/// <param name="err">出錯信息</param>
/// <returns>解壓是否成功</returns>
public void UnZip(string zipFilePath, string unZipDir)
{
if (zipFilePath == string.Empty)
{
throw new Exception("壓縮文件不能為空!");
}
if (!File.Exists(zipFilePath))
{
throw new System.IO.FileNotFoundException("壓縮文件不存在!");
}
//解壓文件夾為空時默認與壓縮文件同一級目錄下,跟壓縮文件同名的文件夾
if (unZipDir == string.Empty)
unZipDir = zipFilePath.Replace(Path.GetFileName(zipFilePath), Path.GetFileNameWithoutExtension(zipFilePath));
if (!unZipDir.EndsWith("\"))
unZipDir += "\";
if (!Directory.Exists(unZipDir))
Directory.CreateDirectory(unZipDir);
using (ZipInputStream s = new ZipInputStream(File.OpenRead(zipFilePath)))
{
ZipEntry theEntry;
while ((theEntry = s.GetNextEntry()) != null)
{
string directoryName = Path.GetDirectoryName(theEntry.Name);
string fileName = Path.GetFileName(theEntry.Name);
if (directoryName.Length > 0)
{
Directory.CreateDirectory(unZipDir + directoryName);
}
if (!directoryName.EndsWith("\"))
directoryName += "\";
if (fileName != String.Empty)
{
using (FileStream streamWriter = File.Create(unZipDir + theEntry.Name))
{
int size = 2048;
byte[] data = new byte[2048];
while (true)
{
size = s.Read(data, 0, data.Length);
if (size > 0)
{
streamWriter.Write(data, 0, size);
}
else
{
break;
}
}
}
}
}
}
}
}
}
以上這兩個類庫可以直接在程序里新建類庫,然後復制粘貼,直接調用即可。
主程序代碼如下所示:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Drawing;
using Microsoft.Win32;
using System.Diagnostics;
namespace UpLoad
{
public partial class UpLoadForm : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
if (TextBox1.Text == "") //如果輸入為空,則彈出提示
{
this.Response.Write("<script>alert('輸入為空,請重新輸入!');window.opener.location.href=window.opener.location.href;</script>");
}
else
{
//壓縮文件夾
string zipPath = TextBox1.Text.Trim(); //獲取將要壓縮的路徑(包括文件夾)
string zipedPath = @"c: emp"; //壓縮文件夾的路徑(包括文件夾)
Zip Zc = new Zip();
Zc.ZipDir(zipPath, zipedPath, 6);
this.Response.Write("<script>alert('壓縮成功!');window.opener.location.href=window.opener.location.href;</script>");
//解壓文件夾
UnZipClass unZip = new UnZipClass();
unZip.UnZip(zipedPath+ ".zip", @"c: emp"); //要解壓文件夾的路徑(包括文件名)和解壓路徑(temp文件夾下的文件就是輸入路徑文件夾下的文件)
this.Response.Write("<script>alert('解壓成功!');window.opener.location.href=window.opener.location.href;</script>");
}
}
}
}
本方法經過測試,均已實現。
另外,附上另外一種上傳文件方法,經測試已實現,參考鏈接:http://blog.ncmem.com/wordpress/2019/11/20/net%e4%b8%8a%e4%bc%a0%e5%a4%a7%e6%96%87%e4%bb%b6%e7%9a%84%e8%a7%a3%e5%86%b3%e6%96%b9%e6%a1%88/
G. asp如何實現文件上傳功能
基本原理是:採用ADO Stream對象的BinaryRead方法將FORM中的所有數據讀出,從中截取出所需的文件數據,以二進制文件方式存檔。
下面是上傳文件頁面的一個例子:
<html>
<body>
<form name="Upload" Method="Post" Enctype="multipart/form-data" Action="Upload.asp">
<input type="file" name="FileName">
<INPUT TYPE="Submit" VALUE="Upload"></TD>
</form>
</body>
</html>
(7)asp實現上傳下載擴展閱讀
幾種文件上傳技術的比較
1、基於HTTP協議
該方法需要編程者利用第三方軟體,如DELPHI、VB等,在應用程序中先進行HTTP協議編程,然後將待上傳文件內容按HTTP協議的格式打包,最後向WEB伺服器發送上傳的請求報文,從而實現文件的上傳。
因為DELPHI和VB不能編寫完整的WEB網路程序,只能編寫WEB小應用程序,因此,該方法只用於功能受限的網路應用。
2、基於VB(或DELPHI等)開發的文件上傳組件
該方法利用VB(或DELPHI等編程語言)開發ASP伺服器組件,實現特定的文件上傳服務。它首先利用ASP表單功能將文件(二進制格式)從用戶端上傳到伺服器端,然後使用VB開發的組件,對二進制文件進行處理,成為可以正常讀寫的文件。
該方法要求編程者不僅掌握ASP語言,而且還能利用VB等第三方語言進行組件編程,增加了開發的難度。
3、基於資料庫技術
該方法和上個方法有類似之處。不同的地方在於對上傳的二進制文件的處理上。它使用資料庫來保存二進制文件。無論是小型資料庫還是大型資料庫都提供了存儲二進制數據的數據類型,只要以Append Chunk方式將數據存入相應的欄位就可以了。
該方法雖然簡單可行,但是因為每次上傳的文件大小都是不一樣的,因此,會對資料庫的空間造成很大的浪費,降低了數據的訪問速度;並且使得文件只能在資料庫環境下進行訪問,造成了很大的不便。
H. Asp.net(c#)文件上傳於下載
我這里有個上傳的函數,下載的還沒做過(新手,目前還沒用到),你看看吧能不能用了。
public void Upload(string path, System.Web.UI.WebControls.FileUpload fileupload)
{
bool fileOK = false;
if (FileUpload1.HasFile)
{
string fileException = System.IO.Path.GetExtension(FileUpload1.FileName).ToLower();
//獲取指定路勁字元串的後綴名,並轉化為小寫
string[] allowExcption = { ".jpg", ".jpeg", ".bmp",".gif" };
//定義允許的後綴名
for (int i = 0; i < allowExcption.Length; i++)
{
if (fileException == allowExcption[i])
{
fileOK = true;
}
}
}
if (fileOK)
{
//判斷文件是否存在,若不在則創建路徑
if (System.IO.Directory.Exists(path))
{
//MessageBox.Show("該目錄已經存在","信息提示");
}
else
{
System.IO.Directory.CreateDirectory(path);//創建文件路徑
}
fileupload.SaveAs(path + "\" + fileupload.FileName);//上傳文件
}
else
{
Response.Write("<Script>alert('不支持此格式文件上傳')</Script>");
return;
}
}
protected void Button1_Click(object sender, EventArgs e)
{
string serverpath = Server.MapPath("~/ImageFile");
string imapath = "~/ImageFile/" + FileUpload1.FileName;
Upload(serverpath, this.FileUpload1);
Image1.ImageUrl = imapath;
serverpath = Server.MapPath("~/ImageFile");
imapath = "~/ImageFile/" + FileUpload1.FileName;
Image1.ImageUrl = imapath;
Upload(serverpath, this.FileUpload1);
}
這部分是調用的(預覽的功能),你要上傳的話改成資料庫操作就可以了,存放上傳的路勁,文件的話她會自動生成文件夾放在裡面的。
I. asp關於文件的上傳和下載功能
先說明一下:
一、組件上傳,在使用方法上,使用代碼少,更安全,更容易控制,並且功能更強大,比如可以實現控制上傳圖片的尺寸,可以實現真實的上傳進度條等,並且上傳圖片後可以進行對圖片進行編輯等。但缺點是要求服務必需安裝這個組件,如果是自己的伺服器還好辦,如果你是租用空間的話,那麼最好放棄組件上傳吧。
二、無組件上傳,在使用上相對稍復雜一點,需要你到網上下載一個「ASP無組件上傳類」(一般為一個.inc文件),不能對圖片進行處理,只可以控制上傳的文件類型,文件大小等,優點是對伺服器無要求,租用的伺服器空間絕大多數都可以使用。
綜上所述,對於一般小站或企業網站,上傳文件不多,文件不大,要求不高的都使用無組件上傳。
目前較流行的 無組件上傳類有:
化境ASP無組件上傳類
風聲ASP無組件上傳類
艾恩ASP無組件上傳類
等,你在網路里搜索以上關鍵字,找到官方網站,可以免費下載相關上傳類,並且有詳細用法說明,及例子。
J. 如何在asp網頁中實現上傳功能
我用的是艾恩無組件上傳,文件上傳到指定文件夾,名稱以年月日時+隨機命名,鏈接上傳到資料庫。另外也可以使用OLB上傳,就是把文件以二進制形式存入資料庫。