C# ZipArchive加压解压zip文件方式_Asp.net

创建zip文件

using (var filestream = new filestream(savezipname, filemode.createnew))
{
    // 使用内存流创建压缩文件
    using (var archive = new ziparchive(filestream, ziparchivemode.create, true))
    {
        var files = directory.getfiles(taskdir, "*", searchoption.alldirectories);

        foreach (var file in files)
        {
            //相对路径
            var relativepath = path.getrelativepath(fileandfolderconfig.collectionspacefolder.path, file);

            archive.createentryfromfile(file, relativepath);
        }
    }
}

获取zip文件流，在内存中创建zip文件避免创建临时文件

using (var memorystream = new memorystream())
{
    // 使用内存流创建压缩文件
    using (var archive = new ziparchive(memorystream, ziparchivemode.create, true))
    {
        var files = directory.getfiles(taskdir, "*", searchoption.alldirectories);

        foreach (var file in files)
        {
            //相对路径
            var relativepath = path.getrelativepath(fileandfolderconfig.collectionspacefolder.path, file);
            var entry = archive.createentry(relativepath, compressionlevel.optimal);

            using var entrystream = entry.open();
            using var filestream = file.openread(file);
            await filestream.copytoasync(entrystream);
        }
    }
    memorystream.position = 0; // 重置流位置
}

下载文件并解压

                 // 下载文件到内存流
                 using (var memorystream = new memorystream())
                 {
                     await taskfile.copytoasync(memorystream);
                     taskfile.close();
                     memorystream.position = 0; // 重置流位置
                     using (var archive = new ziparchive(memorystream, ziparchivemode.read))
                     {
                         foreach (var entry in archive.entries)
                         {
                             var entryoutputpath = path.combine(fileandfolderconfig.collectionspacefolder.path, entry.fullname);
                             // 如果是目录条目，创建目录
                             if (string.isnullorempty(entry.name))
                             {
                                 directory.createdirectory(path.getdirectoryname(entryoutputpath));
                                 continue;
                             }
                             // 确保父目录存在
                             var parentdir = path.getdirectoryname(entryoutputpath);
                             if (!string.isnullorempty(parentdir))
                             {
                                 directory.createdirectory(parentdir);
                             }
                             // 解压文件
                             entry.extracttofile(entryoutputpath, overwrite: true);
                         }
                     }
                 }