使用ICSharpCode.SharpZipLib-(C#)实现解压缩文件的操作类
使用ICSharpCode.SharpZipLib-(C#)实现解压缩文件的操作类: 完整代码如下
A:ICSharpCode.SharpZipLib.DLL组件下载地址,如果要实现必须在项目中引用该组件DLL
下载地址:http://good.gd/203866.htm
完整的操作类代码实例:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
//using the Compent Comspac
using System.IO;
using System.Text;
using System.Threading;
using ICSharpCode.SharpZipLib;
using ICSharpCode.SharpZipLib.Zip;
using ICSharpCode.SharpZipLib.Checksums;
namespace TestJqueryAjax
{
/**////
/// 使用ICSharpZipCode.Dll实现解压缩
/// Author:chenkai Time:2009年7月13日22:03:27
/// Version:Beta1.0.0-(测试版)
///
public class ICSharpZipCodeTest
{
/**////
/// 实现压缩功能
///
/// 要压缩文件(绝对文件路径)
/// 压缩(绝对文件路径)
/// 压缩比
/// 加密密码
/// 压缩文件描述
///
public static string MakeZipFile(string[] filenameToZip, string Zipedfiledname, int CompressionLevel,
string password, string comment)
{
try
{
//使用正则表达式-判断压缩文件路径
System.Text.RegularExpressions.Regex newRegex = new System.Text.
RegularExpressions.Regex(@"^(([a-zA-Z]:)|(\\{2}\w+)\$?)(\\(\w[\w ]*.*))");
if (!newRegex.Match(Zipedfiledname).Success)
{
File.Delete(Zipedfiledname);
return "压缩文件的路径有误!";
}
//创建ZipFileOutPutStream
ZipOutputStream newzipstream = new ZipOutputStream(File.Open(Zipedfiledname,
FileMode.OpenOrCreate));
//判断Password
if (password != null && password.Length > 0)
{
newzipstream.Password = password;
}
if (comment != null && comment.Length > 0)
{
newzipstream.SetComment(comment);
}
//设置CompressionLevel
newzipstream.SetLevel(CompressionLevel); //-查看0 - means store only to 9 - means best compression
//执行压缩
foreach (string filename in filenameToZip)
{
FileStream newstream = File.OpenRead(filename);//打开预压缩文件
//判断路径
if (!newRegex.Match(Zipedfiledname).Success)
{
File.Delete(Zipedfiledname);
return "压缩文件目标路径不存在!";
}
byte[] setbuffer=new byte[newstream.Length];
newstream.Read(setbuffer,0,setbuffer.Length);//读入文件
//新建ZipEntrity
ZipEntry newEntry = new ZipEntry(filename);
//设置时间-长度
newEntry.DateTime = DateTime.Now;
newEntry.Size = newstream.Length;
newstream.Close();
newzipstream.PutNextEntry(newEntry);//压入
newzipstream.Write(setbuffer,0,setbuffer.Length);
}
//重复压入操作
newzipstream.Finish();
newzipstream.Close();
}catch (Exception e)
{
//出现异常
File.Delete(Zipedfiledname);
return e.Message.ToString();
}
return "";
}
/**////
/// 实现解压操作
///
/// 要解压文件Zip(物理路径)
/// 解压目的路径(物理路径)
/// 解压密码
///
public static string UnMakeZipFile(string zipfilename,string UnZipDir,string password)
{
//判断待解压文件路径
if (!File.Exists(zipfilename))
{
File.Delete(UnZipDir);
return "待解压文件路径不存在!";
}
//创建ZipInputStream
ZipInputStream newinStream = new ZipInputStream(File.OpenRead(zipfilename));
//判断Password
if (password != null && password.Length > 0)
{
newinStream.Password = password;
}
//执行解压操作
try
{
ZipEntry theEntry;
//获取Zip中单个File
while ((theEntry = newinStream.GetNextEntry()) != null)
{
//判断目的路径
if (Directory.Exists(UnZipDir))
{
Directory.CreateDirectory(UnZipDir);//创建目的目录
}
//获得目的目录信息
string Driectoryname = Path.GetDirectoryName(UnZipDir);
string pathname = Path.GetDirectoryName(theEntry.Name);//获得子级目录
string filename = Path.GetFileName(theEntry.Name);//获得子集文件名
//处理文件盘符问题
pathname = pathname.Replace(":", "$");//处理当前压缩出现盘符问题
Driectoryname = Driectoryname + "\\" + pathname;
//创建
Directory.CreateDirectory(Driectoryname);
//解压指定子目录
if (filename != string.Empty)
{
FileStream newstream = File.Create(Driectoryname + "\\" + pathname);
int size = 2048;
byte[] newbyte = new byte[size];
while (true)
{
size = newinStream.Read(newbyte, 0, newbyte.Length);
if (size > 0)
{
//写入数据
newstream.Write(newbyte, 0, size);
}
else
{
break;
}
newstream.Close();
}
}
}
newinStream.Close();
}
catch (Exception se)
{
return se.Message.ToString();
}
finally
{
newinStream.Close();
}
return "";
}
}
}