在将ZIP文件的内容保存到multer之前将其解压缩

const fs = require('fs');
const AdmZip = require('adm-zip');

// 读取ZIP文件
const zip = new AdmZip('path/to/your/file.zip');

// 解压缩ZIP文件
zip.extractAllTo('path/to/extract/folder', true);

const multer = require('multer');

// 创建multer实例
const storage = multer.diskStorage({
  destination: function (req, file, cb) {
    cb(null, 'path/to/save/unzipped/files');
  },
  filename: function (req, file, cb) {
    cb(null, file.originalname);
  }
});

const upload = multer({ storage: storage });

// 处理文件上传
app.post('/upload', upload.single('file'), function (req, res, next) {
  // 文件上传成功后的处理逻辑
});