下载csv文件node.js [英] Download csv file node.js

问题描述

我正在使用node.js构建应用程序，并尝试将数据下载为csv文件.我为此使用json2csv( https://www.npmjs.com/package/json2csv )目的.但是，按照我的配置方式，.csv文件存储在应用程序的根目录中.我希望将文件下载下载给用户-例如，文件应出现在用户的/downloads文件夹中.这是我当前的代码:

I am building an app using node.js and trying to download data as a csv file. I am using json2csv (https://www.npmjs.com/package/json2csv) for this purpose. However, the way I have it configured, the .csv file gets stored in my app's root directory. I want the file to be sent to the user as a download - for example, the file should appear in the user's /downloads folder. Here is my current code:

var fields = ['car', 'price', 'color'];
var myCars = [
  {
    "car": "Audi",
    "price": 1,
    "color": "blue"
  }, {
    "car": "BMW",
    "price": 1,
    "color": "black"
  }, {
    "car": "Porsche",
    "price": 1,
    "color": "green"
  }
];

json2csv({ data: myCars, fields: fields }, function(err, csv) {
  if (err) console.log(err);
  fs.writeFile('file.csv', csv, function(err) { //currently saves file to app's root directory
    if (err) throw err;
    console.log('file saved');
  });

});

var file = '../software-project-metric-dashboard/file.csv';
res.download(file, 'testfile.csv'); 

有人可以帮忙吗?

谢谢！

推荐答案

如果使用您必须定义一个类似于以下内容的HTTP GET路由:

You have to define a HTTP GET route which looks something like that:

app.get("/pathToYourDownload", function (req, res) {
  json2csv({ data: myCars, fields: fields }, function(err, csv) {
    res.setHeader('Content-disposition', 'attachment; filename=data.csv');
    res.set('Content-Type', 'text/csv');
    res.status(200).send(csv);
  });
});

这篇关于下载csv文件node.js的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！