net上傳下載
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/
B. asp.net 2.0中如何實現上傳文件與下載文件 用啥控制項和代碼啊
需用到FileUpLoad控制項
#region 文件上傳
/*
if (FileUpload1.HasFile)
{
string type = FileUpload1.PostedFile.ContentType.ToString();
if (type == "image/pjpeg")
{
string path = Server.MapPath("up/");
FileUpload1.PostedFile.SaveAs(path + FileUpload1.FileName);
Response.Write("<script>alert('上傳成功！');</script>");
}
else
Response.Write("<script>alert('請上傳獲得支持的文件類型！');</script>");
}
else
Response.Write("<script>alert('請選擇您要上傳的文件！');</script>");
//*/