290 lines
9.4 KiB
C#
290 lines
9.4 KiB
C#
using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Net;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using ICSharpCode.SharpZipLib;
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using ICSharpCode.SharpZipLib.Zip;
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using ICSharpCode.SharpZipLib.Checksum;
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using System.Web;
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namespace BLL
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{
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public class UploadZipService
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{
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///
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/// 递归压缩文件夹方法
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///
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private static bool ZipFileDictory(string FolderToZip, ZipOutputStream s, string ParentFolderName)
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{
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bool res = true;
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string[] folders, filenames;
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ZipEntry entry = null;
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FileStream fs = null;
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Crc32 crc = new Crc32();
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try
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{
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//创建当前文件夹
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entry = new ZipEntry(Path.Combine(ParentFolderName, Path.GetFileName(FolderToZip) + "/").Replace("\\", "/")); //加上 “/” 才会当成是文件夹创建
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s.PutNextEntry(entry);
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s.Flush();
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//先压缩文件，再递归压缩文件夹
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filenames = Directory.GetFiles(FolderToZip);
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foreach (string file in filenames)
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{
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//打开压缩文件
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fs = File.OpenRead(file);
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byte[] buffer = new byte[fs.Length];
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fs.Read(buffer, 0, buffer.Length);
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entry = new ZipEntry(Path.Combine(ParentFolderName, Path.GetFileName(FolderToZip) + "/" + Path.GetFileName(file)).Replace("\\", "/"));
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entry.CompressionMethod = CompressionMethod.Stored;
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entry.DateTime = DateTime.Now;
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entry.Size = fs.Length;
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fs.Close();
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crc.Reset();
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crc.Update(buffer);
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entry.Crc = crc.Value;
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s.PutNextEntry(entry);
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s.Write(buffer, 0, buffer.Length);
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}
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folders = Directory.GetDirectories(FolderToZip);
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foreach (string folder in folders)
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{
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if (!ZipFileDictory(folder, s, Path.Combine(ParentFolderName, Path.GetFileName(FolderToZip)).Replace("\\", "/")))
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{
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return false;
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}
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}
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}
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catch
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{
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res = false;
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}
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finally
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{
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if (fs != null)
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{
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fs.Close();
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fs = null;
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}
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if (entry != null)
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{
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entry = null;
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}
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GC.Collect();
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GC.Collect(1);
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}
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return res;
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}
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///
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/// 压缩目录
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///
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/// 待压缩的文件夹，全路径格式
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/// 压缩后的文件名，全路径格式
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///
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private static bool ZipFileDictory(string FolderToZip, string ZipedFile, String Password)
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{
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bool res;
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if (!Directory.Exists(FolderToZip))
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{
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return false;
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}
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ZipOutputStream s = new ZipOutputStream(File.Create(ZipedFile));
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s.SetLevel(6);
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s.Password = Password;
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res = ZipFileDictory(FolderToZip, s, "");
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s.Finish();
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s.Close();
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s.Dispose();
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s = null;
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return res;
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}
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///
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/// 压缩文件
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///
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/// 要进行压缩的文件名
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/// 压缩后生成的压缩文件名
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///
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private static bool ZipFile(string FileToZip, string ZipedFile, String Password)
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{
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//如果文件没有找到，则报错
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if (!File.Exists(FileToZip))
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{
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throw new System.IO.FileNotFoundException("指定要压缩的文件: " + FileToZip + " 不存在!");
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}
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//FileStream fs = null;
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FileStream ZipFile = null;
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ZipOutputStream ZipStream = null;
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ZipEntry ZipEntry = null;
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bool res = true;
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try
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{
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ZipFile = File.OpenRead(FileToZip);
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byte[] buffer = new byte[ZipFile.Length];
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ZipFile.Read(buffer, 0, buffer.Length);
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ZipFile.Close();
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ZipFile = File.Create(ZipedFile);
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ZipStream = new ZipOutputStream(ZipFile);
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ZipStream.Password = Password;
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ZipEntry = new ZipEntry(Path.GetFileName(FileToZip));
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ZipStream.PutNextEntry(ZipEntry);
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ZipStream.SetLevel(6);
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ZipStream.Write(buffer, 0, buffer.Length);
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}
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catch
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{
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res = false;
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}
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finally
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{
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if (ZipEntry != null)
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{
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ZipEntry = null;
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}
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if (ZipStream != null)
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{
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ZipStream.Finish();
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ZipStream.Close();
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}
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if (ZipFile != null)
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{
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ZipFile.Close();
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ZipFile = null;
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}
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GC.Collect();
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GC.Collect(1);
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}
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return res;
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}
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///
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/// 压缩文件 和 文件夹
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///
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/// 待压缩的文件或文件夹，全路径格式
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/// 压缩后生成的压缩文件名，全路径格式
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///
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public static bool Zip(String FileToZip, String ZipedFile, String Password)
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{
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if (Directory.Exists(FileToZip))
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{
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return ZipFileDictory(FileToZip, ZipedFile, Password);
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}
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else if (File.Exists(FileToZip))
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{
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return ZipFile(FileToZip, ZipedFile, Password);
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}
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else
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{
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return false;
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}
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}
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/// <summary>
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/// 解压zip格式的文件。
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/// </summary>
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/// <param name="zipFilePath">压缩文件路径</param>
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/// <param name="unZipDir">解压文件存放路径,为空时默认与压缩文件同一级目录下，跟压缩文件同名的文件夹</param>
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/// <param name="err">出错信息</param>
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/// <returns>解压是否成功</returns>
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public static bool UnZipFile(string zipFilePath, string unZipDir, out string err)
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{
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err = "";
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if (zipFilePath == string.Empty)
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{
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err = "压缩文件不能为空！";
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return false;
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}
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if (!File.Exists(zipFilePath))
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{
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err = "压缩文件不存在！";
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return false;
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}
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//解压文件夹为空时默认与压缩文件同一级目录下，跟压缩文件同名的文件夹
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if (unZipDir == string.Empty)
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unZipDir = zipFilePath.Replace(Path.GetFileName(zipFilePath), Path.GetFileNameWithoutExtension(zipFilePath));
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if (!unZipDir.EndsWith("\\"))//如果解压文件存放路径结尾没\时将\加上去
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unZipDir += "\\";
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if (!Directory.Exists(unZipDir))//判断如果解压文件存放路径没有则创建
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Directory.CreateDirectory(unZipDir);
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try
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{
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using (ZipInputStream s = new ZipInputStream(File.OpenRead(zipFilePath)))
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{
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ZipEntry theEntry;
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while ((theEntry = s.GetNextEntry()) != null)
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{
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string directoryName = Path.GetDirectoryName(theEntry.Name);
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string fileName = Path.GetFileName(theEntry.Name);
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if (directoryName.Length > 0)
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{
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Directory.CreateDirectory(unZipDir + directoryName);
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}
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if (!directoryName.EndsWith("\\"))
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directoryName += "\\";
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if (fileName != String.Empty)
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{
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using (FileStream streamWriter = File.Create(unZipDir + theEntry.Name))
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{
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int size = 2048;
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byte[] data = new byte[2048];
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while (true)
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{
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size = s.Read(data, 0, data.Length);
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if (size > 0)
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{
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streamWriter.Write(data, 0, size);
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}
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else
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{
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break;
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}
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}
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streamWriter.Dispose();
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streamWriter.Close();
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}
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}
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}
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s.Dispose();
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s.Close();
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}
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}
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catch (Exception ex)
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{
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err = ex.Message;
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return false;
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}
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return true;
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}
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}
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} |