.net 2.0 C#实现压缩/解压功能实现
需要引入ICSharpCode控件
1.压缩类
using System;
using System.IO;
using System.Text;
using System.Collections;
using System.Diagnostics;
using System.Runtime.Serialization.Formatters.Binary;
using ICSharpCode.SharpZipLib;
using ICSharpCode.SharpZipLib.Checksums;
using ICSharpCode.SharpZipLib.Zip;
using ICSharpCode.SharpZipLib.GZip;
using ICSharpCode.SharpZipLib.BZip2;
using ICSharpCode.SharpZipLib.Zip.Compression;
using ICSharpCode.SharpZipLib.Zip.Compression.Streams;
namespace WindowsApplication1
{
///
/// ZipClass の概要の説明です。
///
public class ZipClass
{
public ZipClass()
{
//
// TODO: コンストラクタ ロジックをここに追加してください。
//
}
public static void ZipFile(string FileToZip, string ZipedFile, int CompressionLevel, int BlockSize)
{
//如果文件没有找到，???
if (!System.IO.File.Exists(FileToZip))
{
throw new System.IO.FileNotFoundException("指定要??的文件: " + FileToZip + " 不存在!");
}
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("ZippedFile");
ZipStream.PutNextEntry(ZipEntry);
ZipStream.SetLevel(CompressionLevel);
byte[] buffer = new byte[BlockSize];
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;
}
ZipStream.Finish();
ZipStream.Close();
StreamToZip.Close();
}
public static void ZipFileDictory(string[] args)
{
string[] filenames = Directory.GetFiles(args[0]);
Crc32 crc = new Crc32();
ZipOutputStream s = new ZipOutputStream(File.Create(args[1]));
s.SetLevel(6);
//FileInfo fi=new FileInfo();
foreach (string file in filenames)
{ string file1;
//打???文件
FileStream fs = File.OpenRead(file);
file1=file.Substring (file.LastIndexOf('//')+1); //添加
byte[] buffer = new byte[fs.Length];
fs.Read(buffer, 0, buffer.Length);
ZipEntry entry = new ZipEntry(file1);
entry.DateTime = DateTime.Now;
entry.Size = fs.Length;
fs.Close();
crc.Reset();
crc.Update(buffer);
entry.Crc = crc.Value;
s.PutNextEntry(entry);
s.Write(buffer, 0, buffer.Length);
}
s.Finish();
s.Close();
}
///
/// ??文件
///
/// 要?行??的文件名
/// ??后生成的??文件名
public static void ZipFile(string FileToZip, string ZipedFile)
{
//如果文件没有找到，???
if (!File.Exists(FileToZip))
{
throw new System.IO.FileNotFoundException("指定要??的文件: " + FileToZip + " 不存在!");
}
FileStream fs = File.OpenRead(FileToZip);
byte[] buffer = new byte[fs.Length];
fs.Read(buffer, 0, buffer.Length);
fs.Close();
FileStream ZipFile = File.Create(ZipedFile);
ZipOutputStream ZipStream = new ZipOutputStream(ZipFile);
ZipEntry ZipEntry = new ZipEntry("LogBackUp.csv");
ZipStream.PutNextEntry(ZipEntry);
ZipStream.SetLevel(6);
ZipStream.Write(buffer, 0, buffer.Length);
ZipStream.Finish();
ZipStream.Close();
}
}
}
2.解压类
using System;
using System.IO;
using System.Text;
using System.Collections;
using System.Diagnostics;
using System.Runtime.Serialization.Formatters.Binary;
using ICSharpCode.SharpZipLib;
using ICSharpCode.SharpZipLib.Checksums;
using ICSharpCode.SharpZipLib.Zip;
using ICSharpCode.SharpZipLib.GZip;
using ICSharpCode.SharpZipLib.BZip2;
using ICSharpCode.SharpZipLib.Zip.Compression;
using ICSharpCode.SharpZipLib.Zip.Compression.Streams;
namespace WebApplication3
{
///
/// UnZipClass の概要の説明です。
///
public class UnZipClass: System.Web.UI.Page
{
public UnZipClass()
{
//
// TODO: コンストラクタ ロジックをここに追加してください。
//
}
///
/// 解?功能(解???文件到指定目?)
///
/// 待解?的文件
/// 指定解?目?目?
public static void UnZip(string[] args)
{
ZipInputStream s = new ZipInputStream(File.OpenRead(@args[0].Trim()));
ZipEntry theEntry;
string directoryName = Path.GetDirectoryName(@args[1].Trim());
if (!Directory.Exists(@args[1].Trim()))
{
Directory.CreateDirectory(directoryName);
}
while ((theEntry = s.GetNextEntry()) != null)
{
//;
string fileName = Path.GetFileName(theEntry.Name);
if (fileName != String.Empty)
{
FileStream streamWriter = File.Create(@args[1].Trim() + fileName);
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;
}
}
streamWriter.Close();
}
}
s.Close();
}
}
}
前台代码：
1
2
52
3. 后台页面代码
1public partial class _Default : System.Web.UI.Page
2{
3 protected void Page_Load(object sender, EventArgs e)
4 {
5
6 }
7 protected void btZipDictory_Click(object sender, EventArgs e)
8 {
9 string[] FilePathS = new string[2];
10 FilePathS[0] = TextBox1.Text.Trim(); //待压缩的文件目录
11 FilePathS[1] = TextBox2.Text.Trim(); //生成的目标文件
12 ZipClass.ZipFileDictory(FilePathS);
13 }
14 protected void btUnZipDictory_Click(object sender, EventArgs e)
15 {
16 string[] FilePathS = new string[2];
17 FilePathS[0] = TextBox3.Text.Trim(); //待解压的文件
18 FilePathS[1] = TextBox4.Text.Trim(); //解压目标存放目录
19 UnZipClass.UnZip(FilePathS);
20 }
21 protected void btZipFile_Click(object sender, EventArgs e)
22 {
23 string[] FilePathS = new string[2];
24 FilePathS[0] = TextBox5.Text.Trim(); //待压缩的文件
25 FilePathS[1] = TextBox6.Text.Trim(); //生成的压缩文件名
26 ZipClass.ZipFile(FilePathS[0], FilePathS[1]);
27
28 }
29 protected void btUnZipFile_Click(object sender, EventArgs e)
30 {
31 string[] FilePathS = new string[2];
32 FilePathS[0] = TextBox7.Text.Trim(); //待解压的文件
33 FilePathS[1] = TextBox8.Text.Trim(); //解压目标存放目录
34 UnZipClass.UnZip(FilePathS);
35 }
36}
示例代码下载
http://www.cnblogs.com/Files/ChengKing/ZIP.rar