小编eir*_*rik的帖子

我试图找出如何将图像直接发布到GridFS而不将其作为临时文件存储在服务器上的任何位置.

我使用Postman(chrome ext.)发布文件,我设法将此帖子存储为文件,使用:

req.pipe(fs.createWriteStream('./test.png'));

当从服务器上的文件创建readStream时,我还能够从readStream直接存储到GridFS.(见代码)

我有以下文件,saveFromReq.js它们监听POST,基本上只是将其传递给savePic.js.

saveFromReq.js:

var express = require('express');
var app = express();
var savePic = require('./savePic');
var fs = require('fs');
var GridStore = require('mongodb').GridStore;
var pic = './square.png';
var picID;



//When the following

 //var pic = fs.createReadStream('./square.png', {autoClose: true});

//is not commented out, and 'req' is replaced with 'pic' in the savePic function,
//the file square.png is stored correctly to GridFS

app.post('/picture', function(req, res){

    savePic(req, function(id){});
    res.writeHead(200, {'Content-Type': 'text' });
    res.end("Sucsess!\n");

});

app.listen(process.env.PORT …