NestJS：NodeJS 子进程：解压缩

解压缩"/>

NestJS：NodeJS 子进程：解压缩

我有一个压缩和加密文件的系统：

            let output = createWriteStream(`${uploadDest}/${data.name}.zip`);
            let archive = archiver.create('zip-encrypted', { zlib: { level: 8 }, encryptionMethod: 'aes256', password: process.env.FILE_ENCRIPTION_KEY });
            let file = readFileSync(`${uploadDest}/${data.name}.${data.format}`);

            output.on('close', () => {
              rmSync(`${uploadDest}/${data.name}.${data.format}`)
              console.log('Archive finished.');
              this.server.to(`${data.userid}-${data.chatid}-${data.date}`).emit('fileUploadFinished')
            });

            archive.on('error', (err) => {
              throw err;
            });
            //Step 4 - pipe and append files
            archive.pipe(output);
            archive.append(file, { name: `${data.name}.${data.format}` });

            //Step 5 - finalize
            archive.finalize();

它有效（在 OS 中测试），但是当我尝试解压缩它时（我知道 nodejs 子进程是解压缩加密和压缩的 ZIP 文件的唯一方法），但是当我将“解压缩”文件发送到用户，那么它的大小是0 Byte.

    if(req.originalUrl.substr(req.originalUrl.length-3, req.originalUrl.length) == "zip"){
      var deFile = spawn('unzip', [ '-P',process.env.FILE_ENCRIPTION_KEY, '-d', `./CDN/${req.originalUrl.substr(6, req.originalUrl.length)}` ])
              deFile.stdout.on('data', function(data){
                console.log(data) 
                return new StreamableFile(data);
              });
    }else{
      let file: any = readFileSync(`./CDN/${req.originalUrl.substr(6, req.originalUrl.length)}`);
      return new StreamableFile(file);
    }

有什么建议吗？谢谢！