C# 对多个文件进行zip压缩
本文使用的ICSharpCode.SharpZipLib.dll类库来实现文件压缩,你可以通过Nuget来安装此类库,或者到搜索引擎去搜索一下遍地都是。类库下载下来之后,添加到项目引用就可以了。下面这个函数可以实现压缩多个文件,希望对你有用:
/// <summary> /// 将多个流进行zip压缩,返回压缩后的流 /// </summary> /// <param name="streams">key:文件名;value:文件名对应的要压缩的流</param> /// <returns>压缩后的流</returns> static Stream PackageManyZip(Dictionary<string, Stream> streams) { byte[] buffer = new byte[6500]; MemoryStream returnStream = new MemoryStream(); var zipMs = new MemoryStream(); using (ZipOutputStream zipStream = new ZipOutputStream(zipMs)) { zipStream.SetLevel(9); foreach (var kv in streams) { string fileName = kv.Key; using (var streamInput = kv.Value) { zipStream.PutNextEntry(new ZipEntry(fileName)); while (true) { var readCount = streamInput.Read(buffer, 0, buffer.Length); if (readCount > 0) { zipStream.Write(buffer, 0, readCount); } else { break; } } zipStream.Flush(); } } zipStream.Finish(); zipMs.Position = 0; zipMs.CopyTo(returnStream, 5600); } returnStream.Position = 0; return returnStream; }