Question

<!DOCTYPE html>
<html>
  <body>

      <form action    =  "/submit"
             method    =  "post">
        Select a file: <input type="file" name="file">
        <input type="submit">
      </form>

    </body>
</html>

非常简单，网页会询问csv文件，然后用户按提交。然后，重点是在/ submit页面中显示该csv文件的内容。

节点js

var http = require('http');
var express= require('express')
var fs = require('fs');
var util = require('util');
var app= express();
var multer = require('multer');
//var bodyParser = require('body-parser');
//var dispatcher = require('httpdispatcher');

app.use(bodyParser.urlencoded({ extended: false }));
app.use(bodyParser.json());

app.get('/', function(req, res){
    var html = fs.readFileSync('index2.html');
    res.writeHead(200, {'Content-Type': 'text/html'});
    res.end(html);
});


app.post('/submit', upload.single('File'), function(req,res) {

});

//Listening to computer's IP address
app.listen(3000, "192.168.0.172");
console.log('Listening at 192.168.0.172:3000')

我创建了一个接收csv文件并解析它的辅助程序。我希望这个程序在客户端上传的文件上运行。

var columns = ["Parameter", "Address", "Data Size"];
require("csv-to-array")({
   file: "parse1.txt",
   columns: columns
}, function (err, array) {
  console.log(err || array);
});

如何在节点js程序的post函数中使用上面的代码？

Answer 1

此代码应该完成工作

var upload = multer({ dest: 'uploads/' })

app.post('/submit', upload.single('file'), function(req,res,next) {
    fs.readFile(req.file.path, 'utf-8', function(err,data){
      if(err){
        res.end(err);
      }
      res.end(data);
    });
});

并将其添加到.html

<form action="/submit" method="post" enctype='multipart/form-data'>

如何使用NODE js / html

1 个答案: