DotnetZip是一个开源类库,支持.NET的任何语言,可很方便的创建,读取,和更新zip文件。而且还可以使用在.NETCompact Framework中。
下载地址在这里:http://dotnetzip.codeplex.com/
下载到的包里有很多个dll文件,一般引用Ionic.Zip.dll就可以:
然后引用这个命名空间:
using Ionic.Zip;
以下是我自己封装的一个类:
/// <summary> /// Zip操作基于 DotNetZip 的封装 /// </summary> public static class ZipUtils { /// <summary> /// 得到指定的输入流的ZIP压缩流对象【原有流对象不会改变】 /// </summary> /// <param name="sourceStream"></param> /// <returns></returns> public static Stream ZipCompress(Stream sourceStream, string entryName = "zip") { MemoryStream compressedStream = new MemoryStream(); if (sourceStream != null) { long sourceOldPosition = 0; try { sourceOldPosition = sourceStream.Position; sourceStream.Position = 0; using (ZipFile zip = new ZipFile()) { zip.AddEntry(entryName, sourceStream); zip.Save(compressedStream); compressedStream.Position = 0; } } catch { } finally { try { sourceStream.Position = sourceOldPosition; } catch { } } } return compressedStream; } /// <summary> /// 得到指定的字节数组的ZIP解压流对象 /// 当前方法仅适用于只有一个压缩文件的压缩包,即方法内只取压缩包中的第一个压缩文件 /// </summary> /// <param name="sourceStream"></param> /// <returns></returns> public static Stream ZipDecompress(byte[] data) { Stream decompressedStream = new MemoryStream(); if (data != null) { try { MemoryStream dataStream = new MemoryStream(data); using (ZipFile zip = ZipFile.Read(dataStream)) { if (zip.Entries.Count > 0) { zip.Entries.First().Extract(decompressedStream); // Extract方法中会操作ms,后续使用时必须先将Stream位置归零,否则会导致后续读取不到任何数据 // 返回该Stream对象之前进行一次位置归零动作 decompressedStream.Position = 0; } } } catch { } } return decompressedStream; } /// <summary> /// 压缩ZIP文件 /// 支持多文件和多目录,或是多文件和多目录一起压缩 /// </summary> /// <param name="list">待压缩的文件或目录集合</param> /// <param name="strZipName">压缩后的文件名</param> /// <param name="IsDirStruct">是否按目录结构压缩</param> /// <returns>成功:true/失败:false</returns> public static bool CompressMulti(List<string> list, string strZipName, bool IsDirStruct) { try { using (ZipFile zip = new ZipFile(Encoding.Default))//设置编码,解决压缩文件时中文乱码 { foreach (string path in list) { string fileName = Path.GetFileName(path);//取目录名称 //如果是目录 if (Directory.Exists(path)) { if (IsDirStruct)//按目录结构压缩 { zip.AddDirectory(path, fileName); } else//目录下的文件都压缩到Zip的根目录 { zip.AddDirectory(path); } } if (File.Exists(path))//如果是文件 { zip.AddFile(path); } } zip.Save(strZipName);//压缩 return true; } } catch (Exception) { return false; } } /// <summary> /// 解压ZIP文件 /// </summary> /// <param name="strZipPath">待解压的ZIP文件</param> /// <param name="strUnZipPath">解压的目录</param> /// <param name="overWrite">是否覆盖</param> /// <returns>成功:true/失败:false</returns> public static bool Decompression(string strZipPath, string strUnZipPath, bool overWrite) { try { ReadOptions options = new ReadOptions(); options.Encoding = Encoding.Default;//设置编码,解决解压文件时中文乱码 using (ZipFile zip = ZipFile.Read(strZipPath, options)) { foreach (ZipEntry entry in zip) { if (string.IsNullOrEmpty(strUnZipPath)) { strUnZipPath = strZipPath.Split('.').First(); } if (overWrite) { entry.Extract(strUnZipPath, ExtractExistingFileAction.OverwriteSilently);//解压文件,如果已存在就覆盖 } else { entry.Extract(strUnZipPath, ExtractExistingFileAction.DoNotOverwrite);//解压文件,如果已存在不覆盖 } } return true; } } catch (Exception) { return false; } } }
使用方法:
1.压缩文件
List<string> list = new List<string>(); list.Add(@"D:Testss"); list.Add(@"D:Test est1.jpg"); list.Add(@"D:公司文件.txt"); list.Add(@"D:Testss.xml"); bool isSuc =ZipUtils. CompressMulti(list, "D:\Test2.zip",true);
2.解压文件
bool isSuc = ZipUtils.Decompression("D:\Test\Test1.zip", "D:\Teest", true);