c# WebUploader 分塊上傳
ASP.NET上傳檔案用FileUpLoad就可以，但是對資料夾的操作卻不能用FileUpLoad來實現。
下面這個示例便是使用ASP.NET來實現上傳資料夾並對資料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資料夾的路徑（包含資料夾），通過Button實現選擇資料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：\95413594531\GIS","tmptest",@"E：\95413594531\");
}
///
///壓縮檔案
///
///需要壓縮的資料夾或者單個檔案
///生成壓縮檔案的檔名
///生成壓縮檔案儲存路徑
///
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(@"Applications\WinRAR.exe\Shell\Open\Command"); //注：未在登錄檔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 + 被壓縮的檔案或者路徑
theStartInfo = new ProcessStartInfo();
theStartInfo.FileName = therar;
theStartInfo.Arguments = theInfo;
theStartInfo.WindowStyle = ProcessWindowStyle.Hidden;
theStartInfo.WorkingDirectory = DRARPath ; //RaR檔案的存放目錄。
theProcess = new Process();
theProcess.StartInfo = theStartInfo;
theProcess.Start();
theProcess.WaitForExit();
theProcess.Close();
return true;
}
catch (Exception ex)
{
return false;
}
}
///
///解壓縮到指定資料夾
///
///壓縮檔案存在的目錄
///壓縮檔名稱
///解壓到資料夾
///
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(@"Applications\WinRar.exe\Shell\Open\Command");
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;
}
}
注：這種方法在在電腦登錄檔中未找到應有的路徑，未實現，僅供參考。
2.生成zip
通過呼叫類庫ICSharpCode.SharpZipLib.dll
該類庫可以從網上下載。也可以從本連結下載：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：壓縮檔案
/// creator chaodongwang 2009-11-11
/// </summary>
public class Zip
{
/// <summary>
///壓縮單個檔案
/// </summary>
/// <param name="FileToZip">被壓縮的檔名稱(包含檔案路徑)</param>
/// <param name="ZipedFile">壓縮後的檔名稱(包含檔案路徑)</param>
/// <param name="CompressionLevel">壓縮率0（無壓縮）-9（壓縮率最高）</param>
/// <param name="BlockSize">快取大小</param>
public void ZipFile(string FileToZip,string ZipedFile,int CompressionLevel)
{
//如果檔案沒有找到，則報錯
if (!System.IO.File.Exists(FileToZip))
{
throw new System.IO.FileNotFoundException("檔案：" + 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，建立該目錄
//string zipedDir = ZipedFile.Substring(0,ZipedFile.LastIndexOf("\\"));
//if (!Directory.Exists(zipedDir))
//Directory.CreateDirectory(zipedDir);
//被壓縮檔名稱
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,buffer.Length);
ZipStream.Write(buffer,size);
try
{
while (size < StreamToZip.Length)
{
int sizeRead = StreamToZip.Read(buffer,sizeRead);
size += sizeRead;
}
}
catch (System.Exception ex)
{
throw ex;
}
finally
{
ZipStream.Finish();
ZipStream.Close();
StreamToZip.Close();
}
}
/// <summary>
///壓縮資料夾的方法
/// </summary>
public void ZipDir(string DirToZip,int CompressionLevel)
{
//壓縮檔案為空時預設與壓縮資料夾同一級目錄
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,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,buffer.Length);
}
}
}
/// <summary>
///獲取所有檔案
/// </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>
///獲取一個資料夾下的所有資料夾裡的檔案
/// </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>
///獲取一個資料夾下的檔案
/// </summary>
/// <param name="strDirName">目錄名稱</param>
/// <param name="filesList">檔案列表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>
///解壓檔案
/// </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：解壓檔案
/// creator chaodongwang 2009-11-11
/// </summary>
public class UnZipClass
{
/// <summary>
///功能：解壓zip格式的檔案。
/// </summary>
/// <param name="zipFilePath">壓縮檔案路徑</param>
/// <param name="unZipDir">解壓檔案存放路徑,為空時預設與壓縮檔案同一級目錄下，跟壓縮檔案同名的資料夾</param>
/// <param name="err">出錯資訊</param>
/// <returns>解壓是否成功</returns>
public void UnZip(string zipFilePath,string unZipDir)
{
if (zipFilePath == string.Empty)
{
throw new Exception("壓縮檔案不能為空！");
}
if (!File.Exists(zipFilePath))
{
throw new System.IO.FileNotFoundException("壓縮檔案不存在！");
}
//解壓資料夾為空時預設與壓縮檔案同一級目錄下，跟壓縮檔案同名的資料夾
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,data.Length);
if (size > 0)
{
streamWriter.Write(data,size);
}
else
{
break;
}
}
}
}
}
}
}
}
}
以上這兩個類庫可以直接在程式裡新建類庫，然後複製貼上，直接呼叫即可。
主程式程式碼如下所示：
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
{
//壓縮資料夾
string zipPath = TextBox1.Text.Trim(); //獲取將要壓縮的路徑(包括資料夾)
string zipedPath = @"c:\temp"; //壓縮資料夾的路徑(包括資料夾)
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>");
//解壓資料夾
UnZipClass unZip = new UnZipClass();
unZip.UnZip(zipedPath+ ".zip",@"c:\temp"); //要解壓資料夾的路徑(包括檔名)和解壓路徑(temp資料夾下的檔案就是輸入路徑資料夾下的檔案)
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，附上另外一種上傳檔案方法，經測試已實現，參考連結：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/
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