- using System;
- using System.Collections.Generic;
- using System.IO;
- using System.Linq;
- using System.web;
- using ICSharpCode.SharpZipLib.Zip;
- namespace GzRMIS.Main.Business
- {
- public class ZipHelper
- {
- /// <summary>
- /// 存放待压缩的文件的绝对路径
- /// </summary>
- private List<string> AbsolutePaths { set; get; }
- public string errorMsg { set; get; }
- public ZipHelper()
- {
- errorMsg = "";
- AbsolutePaths = new List<string>();
- }
- /// <summary>
- /// 添加压缩文件或文件夹
- /// </summary>
- /// <param name="_fileAbsolutePath">文件或文件夹的绝对路径</param>
- public void AddFile(string _fileAbsolutePath)
- {
- AbsolutePaths.Add(_fileAbsolutePath);
- }
- /// <summary>
- /// 压缩文件或者文件夹
- /// </summary>
- /// <param name="_depositPath">压缩后文件的存放路径 如C:\\windows\abc.zip</param>
- /// <param name="_Level">压缩级别0~9,数字越大压缩率越高,默认为5</param>
- /// <returns></returns>
- public bool CompressionZip(string _depositPath,int _Level=5)
- {
- bool result = true;
- FileStream fs = null;
- try
- {
- ZipOutputStream ComStream = new ZipOutputStream(File.Create(_depositPath));
- ComStream.SetLevel(_Level); //压缩等级
- foreach (string path in AbsolutePaths)
- {
- //如果是目录
- if (Directory.Exists(path))
- {
- ZipFloder(path, ComStream, path);
- }
- else if (File.Exists(path))//如果是文件
- {
- fs = File.OpenRead(path);
- byte[] bts = new byte[fs.Length];
- fs.Read(bts, 0, bts.Length);
- ZipEntry ze = new ZipEntry(new FileInfo(path).Name);
- ComStream.PutNextEntry(ze); //为压缩文件流提供一个容器
- ComStream.Write(bts, 0, bts.Length); //写入字节
- }
- }
- ComStream.Finish(); // 结束压缩
- ComStream.Close();
- }
- catch (Exception ex)
- {
- if (fs != null)
- {
- fs.Close();
- }
- errorMsg = ex.Message;
- result = false;
- }
- return result;
- }
- //压缩文件夹
- private void ZipFloder(string _OfloderPath, ZipOutputStream zos, string _floderPath)
- {
- foreach (FileSystemInfo item in new DirectoryInfo(_floderPath).GetFileSystemInfos())
- {
- if (Directory.Exists(item.FullName))
- {
- ZipFloder(_OfloderPath, zos, item.FullName);
- }
- else if (File.Exists(item.FullName))//如果是文件
- {
- DirectoryInfo ODir = new DirectoryInfo(_OfloderPath);
- string fullName2 = new FileInfo(item.FullName).FullName;
- string path = ODir.Name + fullName2.Substring(ODir.FullName.Length, fullName2.Length - ODir.FullName.Length);//获取相对目录
- FileStream fs = File.OpenRead(fullName2);
- byte[] bts = new byte[fs.Length];
- fs.Read(bts, 0, bts.Length);
- ZipEntry ze = new ZipEntry(path);
- zos.PutNextEntry(ze); //为压缩文件流提供一个容器
- zos.Write(bts, 0, bts.Length); //写入字节
- }
- }
- }
- /// <summary>
- /// 解压
- /// </summary>
- /// <param name="_depositPath">压缩文件路径</param>
- /// <param name="_floderPath">解压的路径</param>
- /// <returns></returns>
- public bool DeCompressionZip(string _depositPath, string _floderPath)
- {
- bool result = true;
- FileStream fs = null;
- try
- {
- ZipInputStream InpStream = new ZipInputStream(File.OpenRead(_depositPath));
- ZipEntry ze = InpStream.GetNextEntry();//获取压缩文件中的每一个文件
- Directory.CreateDirectory(_floderPath);//创建解压文件夹
- while (ze != null)//如果解压完ze则是null
- {
- if (ze.IsFile)//压缩zipINputStream里面存的都是文件。带文件夹的文件名字是文件夹\\文件名
- {
- string[] strs = ze.Name.Split('\\');//如果文件名中包含’\\‘则表明有文件夹
- if (strs.Length > 1)
- {
- //两层循环用于一层一层创建文件夹
- for (int i = 0; i < strs.Length - 1; i++)
- {
- string floderPath = _floderPath;
- for (int j = 0; j < i; j++)
- {
- floderPath = floderPath + "\\" + strs[j];
- }
- floderPath = floderPath + "\\" + strs[i];
- Directory.CreateDirectory(floderPath);
- }
- }
- fs = new FileStream(_floderPath + "\\" + ze.Name, FileMode.OpenOrCreate, FileAccess.Write);//创建文件
- //循环读取文件到文件流中
- while (true)
- {
- byte[] bts = new byte[1024];
- int i = InpStream.Read(bts, 0, bts.Length);
- if (i > 0)
- {
- fs.Write(bts, 0, i);
- }
- else
- {
- fs.Flush();
- fs.Close();
- break;
- }
- }
- }
- ze = InpStream.GetNextEntry();
- }
- }
- catch (Exception ex)
- {
- if (fs != null)
- {
- fs.Close();
- }
- errorMsg = ex.Message;
- result = false;
- }
- return result;
- }
- }
- }
来源: http://www.phpxs.com/code/1004772/