Question

每个人我都想循环Nodejs上强大的库给定的文件数组，这是post函数：

form.parse(req, (err, fields, files) => {
        console.log(files);
        let filesPaths = [];

        files.forEach(file => {
            filesPaths.push(file.path)
        });

        res.json({
            filesPaths
        })
})

，我只是关注这个Youtube Tutorial，但是奇怪的是，它没有像视频中的那样工作，尽管出现了Cannot read property 'forEach' of undefined的结果，但我还是遇到了console.log(files)错误。

这是console.log(files)的日志：

 { test:
   File {
     _events: [Object: null prototype] {},
     _eventsCount: 0,
     _maxListeners: undefined,
     size: 57417,
     path: 'uploads\\upload_ecc62d10fe1c5f0c60786125211a95eb.jpg',
     name: 'products_364475.jpg',
     type: 'image/jpeg',
     hash: null,
     lastModifiedDate: 2019-05-28T00:03:31.636Z,
     _writeStream:
      WriteStream {
        _writableState: [WritableState],
        writable: false,
        _events: [Object: null prototype] {},
        _eventsCount: 0,
        _maxListeners: undefined,
        path: 'uploads\\upload_ecc62d10fe1c5f0c60786125211a95eb.jpg',
        fd: null,
        flags: 'w',
        mode: 438,
        start: undefined,
        autoClose: true,
        pos: undefined,
        bytesWritten: 57417,
        closed: false } },
  test2:
   File {
     _events: [Object: null prototype] {},
     _eventsCount: 0,
     _maxListeners: undefined,
     size: 11296,
     path: 'uploads\\upload_15de2858098a654c11ac08400b0c18d8.jpg',
     name: 'download.jpg',
     type: 'image/jpeg',
     hash: null,
     lastModifiedDate: 2019-05-28T00:03:31.637Z,
     _writeStream:
      WriteStream {
        _writableState: [WritableState],
        writable: false,
        _events: [Object: null prototype] {},
        _eventsCount: 0,
        _maxListeners: undefined,
        path: 'uploads\\upload_15de2858098a654c11ac08400b0c18d8.jpg',
        fd: null,
        flags: 'w',
        mode: 438,
        start: undefined,
        autoClose: true,
        pos: undefined,
        bytesWritten: 11296,
        closed: false } } }

Answer 1

这是我解析和遍历files的方式：

let filesArray = [];

    let json = JSON.parse(JSON.stringify(files));

    let key = Object.keys(json);

    json[key].forEach(j => {
       filesArray.push(j.path.split("\\")[1]);
    });

    res.json({
        filesArray
    })

Nodejs强大的库遍历文件

1 个答案: