Express res.download() [英] Express res.download()

问题描述

我不知道为什么会这样，但这确实很烦人.我希望根据表达文档来下载文件.我有下一个代码:

I don't know why it's happening, but it's really annoying. I expected the file to be downloaded according to the express docs. I have the next code:

  //in react (App.js)
  download = () => {
    const { images, target } = this.state;
    const filename = images.find(img => img.id === target).filename;
    fetch('http://localhost:3001/download', {
      method: 'post',
      headers: {'Content-Type': 'application/json'},
      body: JSON.stringify({filename})
    })
  }
  //in express (server.js)
  app.post('/download', (req, res) => {
    var file = '../public/images/' + req.body.filename;
    res.download(file, req.body.filename);
  });

文件夹结构:

  -server
    |-server.js
  -public
    |-images
      |-a.jpg
      |-b.jpg
  -src
    |-App.js

什么都没发生，错误未显示.有什么想法吗?

Nothing's happening, errors not shown. Any ideas?

推荐答案

我认为您遇到的问题是您使用的是HTTP POST而不是HTTP GET

I think the issue you have is that you're using an HTTP POST instead of HTTP GET

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