Csharp/C#教程：c#使用DotNetZip封装类操作zip文件(创建/读取/更新)实例分享

下载地址在这里：https://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：

usingIonic.Zip;

以下是我自己封装的一个类：

代码如下:
///<summary>
   ///Zip操作基于DotNetZip的封装
   ///</summary>
   publicstaticclassZipUtils
   {
       ///<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>
       ///<paramname=”sourceStream”></param>
       ///<returns></returns>
       publicstaticStreamZipCompress(StreamsourceStream,stringentryName=”zip”)
       {
           MemoryStreamcompressedStream=newMemoryStream();
           if(sourceStream!=null)
           {
               longsourceOldPosition=0;
               try
               {
                   sourceOldPosition=sourceStream.Position;
                   sourceStream.Position=0;
                   using(ZipFilezip=newZipFile())
                   {
                       zip.AddEntry(entryName,sourceStream);
                       zip.Save(compressedStream);
                       compressedStream.Position=0;
                   }
               }
               catch
               {
               }
               finally
               {
                   try
                   {
                       sourceStream.Position=sourceOldPosition;
                   }
                   catch
                   {
                   }
  &n bsp;            }
           }
           returncompressedStream;
       }

       ///<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>
       ///<paramname=”sourceStream”></param>
       ///<returns></returns>
       publicstaticStreamZipDecompress(byte[]data)
       {
           StreamdecompressedStream=newMemoryStream();
           if(data!=null)
           {
               try
               {
                   MemoryStreamdataStream=newMemoryStream(data);
                   using(ZipFilezip=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
               {
               }
           }
           returndecompressedStream;
       }

       ///<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>
       ///<paramname=”list”>待压缩的文件或目录集合</param>
       ///<paramname=”strZipName”>压缩后的文件名</param>
       ///<paramname=”IsDirStruct”>是否按目录结构压缩</param>
       ///<returns>成功：true/失败：false</returns>
       publicstaticboolCompressMulti(List<string>list,stringstrZipName,boolIsDirStruct)
       {
           try
           {
               using(ZipFilezip=newZipFile(Encoding.Default))//设置编码，解决压缩文件时中文乱码
               {
                   foreach(stringpathinlist)
                   {
                       stringfileName=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);
                           }
                       }
                   & nbsp;   if(File.Exists(path))//如果是文件
                       {
                           zip.AddFile(path);
                       }
                   }
                   zip.Save(strZipName);//压缩
                   returntrue;
               }
           }
           catch(Exception)
           {
               returnfalse;
           }
       }

       ///<summary>
       ///解压ZIP文件
       ///</summary>
       ///<paramname=”strZipPath”>待解压的ZIP文件</param>
       ///<paramname=”strUnZipPath”>解压的目录</param>
       ///<paramname=”overWrite”>是否覆盖</param>
       ///<returns>成功：true/失败：false</returns>
       publicstaticboolDecompression(stringstrZipPath,stringstrUnZipPath,booloverWrite)
       {
           try
           {
               ReadOptionsoptions=newReadOptions();
               options.Encoding=Encoding.Default;//设置编码，解决解压文件时中文乱码
               using(ZipFilezip=ZipFile.Read(strZipPath,options))
               {
                   foreach(ZipEntryentryinzip)
                   {
                       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
                       }
                   }
                    returntrue;
               }
           }
           catch(Exception)
           {
               returnfalse;
           }
       }

   }

使用方法：

1.压缩文件

代码如下:
List<string>list=newList<string>();
 list.Add(@”D:Testss”);
 list.Add(@”D:Testtest1.jpg”);
 list.Add(@”D:公司文件.txt”);
 list.Add(@”D:Testss.xml”);
 boolisSuc=ZipUtils.CompressMulti(list,”D:\Test2.zip”,true);

2.解压文件

代码如下:
boolisSuc=ZipUtils.Decompression(“D:\Test\Test1.zip”,”D:\Teest”,true);

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