C#实现多级子目录Zip压缩解压实例
2021-03-30 17:28
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using ICSharpCode.SharpZipLib;
using ICSharpCode.SharpZipLib.Zip;
#if NETSTANDARD2_0
using ICSharpCode.SharpZipLib.Checksum;
#else
using ICSharpCode.SharpZipLib.Checksums;
#endif
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namespace Q.Helper.Zip
{
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///
/// 适用与ZIP压缩
///
public class ZipHelper
{
public int Level
{
get; set;
}
#region 压缩
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///
/// 递归压缩文件夹的内部方法(排除相对路径)
///
/// 要压缩的文件夹路径
/// 压缩输出流
/// 此文件夹的上级文件夹
/// 是否包含目录名
///
private bool ZipDirectory(string folderToZip, ZipOutputStream zipStream, string parentFolderName, bool createBaseFolder = true)
{
folderToZip = folderToZip.Replace("\\", "/");
bool result = true;
string[] folders, files;
ZipEntry ent = null;
FileStream fs = null;
Crc32 crc = new Crc32();
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try
{
string entPath = Path.Combine(parentFolderName, Path.GetFileName(folderToZip) + "/").Replace("\\", "/");
if (!createBaseFolder)
entPath = entPath.Substring(entPath.IndexOf("/") + 1);
if (!string.IsNullOrEmpty(entPath))
{
ent = new ZipEntry(entPath);
Console.WriteLine(entPath);
zipStream.PutNextEntry(ent);
zipStream.Flush();
}
files = Directory.GetFiles(folderToZip);
foreach (string file in files)
{
fs = File.OpenRead(file);
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byte[] buffer = new byte[fs.Length];
fs.Read(buffer, 0, buffer.Length);
entPath = Path.Combine(parentFolderName, Path.GetFileName(folderToZip) + "/" + Path.GetFileName(file)).Replace("\\", "/");
if (!createBaseFolder)
entPath = entPath.Substring(entPath.IndexOf("/") + 1);
Console.WriteLine(entPath);
ent = new ZipEntry(entPath);
ent.DateTime = DateTime.Now;
ent.Size = fs.Length;
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fs.Close();
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crc.Reset();
crc.Update(buffer);
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ent.Crc = crc.Value;
zipStream.PutNextEntry(ent);
zipStream.Write(buffer, 0, buffer.Length);
}
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}
catch (Exception ex)
{
result = false;
throw ex;
}
finally
{
if (fs != null)
{
fs.Close();
fs.Dispose();
}
if (ent != null)
{
ent = null;
}
GC.Collect();
GC.Collect(1);
}
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folders = Directory.GetDirectories(folderToZip);
//多级递归时需要记住相对目录
foreach (string folder in folders)
{
if (!ZipDirectory(folder, zipStream, Path.Combine(parentFolderName, Path.GetFileName(folderToZip)), createBaseFolder))
return false;
}
return result;
}
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///
/// 压缩文件夹
///
/// 要压缩的文件夹路径
/// 压缩文件完整路径
/// 密码
///
public bool ZipDirectory(string folderToZip, string zipedFile, string password, bool includeFloderName = true)
{
bool result = false;
if (!Directory.Exists(folderToZip))
return result;
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ZipOutputStream zipStream = new ZipOutputStream(File.Create(zipedFile));
zipStream.SetLevel(Level);
if (!string.IsNullOrEmpty(password)) zipStream.Password = password;
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result = ZipDirectory(folderToZip, zipStream, "", includeFloderName);
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zipStream.Finish();
zipStream.Close();
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return result;
}
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///
/// 压缩文件夹
///
/// 要压缩的文件夹路径
/// 压缩文件完整路径
///
public bool ZipDirectory(string folderToZip, string zipedFile, bool includeFloderName = true)
{
bool result = ZipDirectory(folderToZip, zipedFile, "", includeFloderName);
return result;
}
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///
/// 压缩文件
///
/// 要压缩的文件全名
/// 压缩后的文件名
/// 密码
///
public bool ZipFile(string fileToZip, string zipedFile, string password)
{
bool result = true;
ZipOutputStream zipStream = null;
FileStream fs = null;
ZipEntry ent = null;
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if (!File.Exists(fileToZip))
return false;
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try
{
fs = File.OpenRead(fileToZip);
byte[] buffer = new byte[fs.Length];
fs.Read(buffer, 0, buffer.Length);
fs.Close();
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fs = File.Create(zipedFile);
zipStream = new ZipOutputStream(fs);
if (!string.IsNullOrEmpty(password)) zipStream.Password = password;
ent = new ZipEntry(Path.GetFileName(fileToZip));
zipStream.PutNextEntry(ent);
zipStream.SetLevel(Level);
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zipStream.Write(buffer, 0, buffer.Length);
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}
catch
{
result = false;
}
finally
{
if (zipStream != null)
{
zipStream.Finish();
zipStream.Close();
}
if (ent != null)
{
ent = null;
}
if (fs != null)
{
fs.Close();
fs.Dispose();
}
}
GC.Collect();
GC.Collect(1);
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return result;
}
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///
/// 压缩文件
///
/// 要压缩的文件全名
/// 压缩后的文件名
///
public bool ZipFile(string fileToZip, string zipedFile)
{
bool result = ZipFile(fileToZip, zipedFile, null);
return result;
}
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///
/// 压缩文件或文件夹
///
/// 要压缩的路径
/// 压缩后的文件名
/// 密码
///
public bool Zip(string fileToZip, string zipedFile, string password)
{
bool result = false;
if (Directory.Exists(fileToZip))
result = ZipDirectory(fileToZip, zipedFile, password);
else if (File.Exists(fileToZip))
result = ZipFile(fileToZip, zipedFile, password);
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return result;
}
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///
/// 压缩文件或文件夹
///
/// 要压缩的路径
/// 压缩后的文件名
///
public bool Zip(string fileToZip, string zipedFile)
{
bool result = Zip(fileToZip, zipedFile, null);
return result;
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}
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#endregion
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#region 解压
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///
/// 解压功能(解压压缩文件到指定目录)
///
/// 待解压的文件
/// 指定解压目标目录
/// 密码
///
public static bool UnZip(string fileToUnZip, string zipedFolder, string password)
{
bool result = true;
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ZipInputStream zipStream = null;
ZipEntry ent = null;
string fileName;
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if (!File.Exists(fileToUnZip))
return false;
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if (!Directory.Exists(zipedFolder))
Directory.CreateDirectory(zipedFolder);
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try
{
zipStream = new ZipInputStream(File.OpenRead(fileToUnZip));
if (!string.IsNullOrEmpty(password)) zipStream.Password = password;
while ((ent = zipStream.GetNextEntry()) != null)
{
if (!string.IsNullOrEmpty(ent.Name))
{
fileName = Path.Combine(zipedFolder, ent.Name);
fileName = fileName.Replace(‘/‘, ‘\\‘);//change by Mr.HopeGi
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if (fileName.EndsWith("\\"))
{
Directory.CreateDirectory(fileName);
continue;
}
using (FileStream fs = File.Create(fileName))
{
int size = 2048;
byte[] data = new byte[size];
while (true)
{
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size = zipStream.Read(data, 0, data.Length);
if (size > 0)
fs.Write(data, 0, data.Length);
else
break;
}
fs.Flush();
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fs.Close();
new FileInfo(fileName).LastWriteTime = ent.DateTime;
}
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}
}
}
catch
{
result = false;
}
finally
{
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if (zipStream != null)
{
zipStream.Close();
zipStream.Dispose();
}
if (ent != null)
{
ent = null;
}
GC.Collect();
GC.Collect(1);
}
return result;
}
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///
/// 解压功能(解压压缩文件到指定目录)
///
/// 待解压的文件
/// 指定解压目标目录
///
public static bool UnZip(string fileToUnZip, string zipedFolder)
{
bool result = UnZip(fileToUnZip, zipedFolder, null);
return result;
}
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#endregion
}
}
文章标题：C#实现多级子目录Zip压缩解压实例
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